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Questions and Answers
What are the four major functions of calcium in the human body?
What are the four major functions of calcium in the human body?
Structural component of bones and teeth, blood clotting, transmission of nerve impulses, and muscle contraction
What is the recommended daily intake of calcium for adults, excluding pregnant or breastfeeding women?
What is the recommended daily intake of calcium for adults, excluding pregnant or breastfeeding women?
1000-1200 mg
What are some major dietary sources of calcium?
What are some major dietary sources of calcium?
Milk and milk products, canned fish, tofu made with calcium sulfate, leafy vegetables, calcium-fortified foods such as orange juice
What are the potential risks of inadequate calcium intake?
What are the potential risks of inadequate calcium intake?
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What is the upper level intake of calcium that may cause adverse effects?
What is the upper level intake of calcium that may cause adverse effects?
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What can be done to improve calcium intake without relying on dietary supplements?
What can be done to improve calcium intake without relying on dietary supplements?
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What is the primary function of sodium in the human body?
What is the primary function of sodium in the human body?
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What is the recommended daily intake of potassium for adults?
What is the recommended daily intake of potassium for adults?
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What is the role of magnesium in the human body?
What is the role of magnesium in the human body?
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What is the structural role of phosphorus in the human body?
What is the structural role of phosphorus in the human body?
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What is the primary function of chloride in the human body?
What is the primary function of chloride in the human body?
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What is the role of sulfur in the human body?
What is the role of sulfur in the human body?
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What is the primary function of calcium in the human body?
What is the primary function of calcium in the human body?
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What is the process of bone remodeling?
What is the process of bone remodeling?
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What is the role of the thyroid and parathyroid glands in the human body?
What is the role of the thyroid and parathyroid glands in the human body?
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What is the primary function of parathyroid hormone (PTH) in response to falling blood calcium levels?
What is the primary function of parathyroid hormone (PTH) in response to falling blood calcium levels?
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What is the recommended daily intake of calcium for adults?
What is the recommended daily intake of calcium for adults?
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What hormone is secreted by the thyroid gland to counteract high blood calcium levels?
What hormone is secreted by the thyroid gland to counteract high blood calcium levels?
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What is the primary source of calcium in American diets?
What is the primary source of calcium in American diets?
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Why is the calcium content of cottage cheese lower than that of milk?
Why is the calcium content of cottage cheese lower than that of milk?
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What are the two naturally occurring substances that interfere with calcium absorption from plant-based foods?
What are the two naturally occurring substances that interfere with calcium absorption from plant-based foods?
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What is the bioavailability of calcium from plant-based foods compared to milk and milk products?
What is the bioavailability of calcium from plant-based foods compared to milk and milk products?
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What is a potential health risk associated with long-term ingestion of calcium from antacids?
What is a potential health risk associated with long-term ingestion of calcium from antacids?
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What is a symptom of toxicity from taking antacids containing calcium carbonate and magnesium?
What is a symptom of toxicity from taking antacids containing calcium carbonate and magnesium?
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What are some good plant sources of calcium?
What are some good plant sources of calcium?
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What is the amount of elemental calcium provided by an antacid pill containing 750 mg of calcium carbonate?
What is the amount of elemental calcium provided by an antacid pill containing 750 mg of calcium carbonate?
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Why does the oxalic acid in spinach reduce the availability of the plant's calcium content?
Why does the oxalic acid in spinach reduce the availability of the plant's calcium content?
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What percentage of calcium in milk is bioavailable?
What percentage of calcium in milk is bioavailable?
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What is the purpose of adding vitamin D to calcium supplements?
What is the purpose of adding vitamin D to calcium supplements?
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Why do vegetarians and lactose-intolerant individuals have a higher risk of calcium deficiency?
Why do vegetarians and lactose-intolerant individuals have a higher risk of calcium deficiency?
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What is the maximum amount of calcium that can be absorbed by the body during stages of life when calcium needs are high?
What is the maximum amount of calcium that can be absorbed by the body during stages of life when calcium needs are high?
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Why do older adults, especially women, have lower calcium absorption?
Why do older adults, especially women, have lower calcium absorption?
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What is the benefit of taking calcium supplements with meals?
What is the benefit of taking calcium supplements with meals?
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What is the risk associated with taking high-dose calcium supplements (more than 1000 mg/day)?
What is the risk associated with taking high-dose calcium supplements (more than 1000 mg/day)?
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What is the purpose of the 'seal of approval' on dietary supplement labels?
What is the purpose of the 'seal of approval' on dietary supplement labels?
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Why is calcium considered a 'nutrient of public health concern'?
Why is calcium considered a 'nutrient of public health concern'?
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Why do women have a higher risk of osteoporosis after menopause?
Why do women have a higher risk of osteoporosis after menopause?
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What is a simple way to monitor bone mass?
What is a simple way to monitor bone mass?
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Who should consider getting tested for bone mineral density?
Who should consider getting tested for bone mineral density?
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What lifestyle changes can reduce the risk of osteoporosis?
What lifestyle changes can reduce the risk of osteoporosis?
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Why is it essential to choose foods with high calcium content?
Why is it essential to choose foods with high calcium content?
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What type of physical activities can improve bone mass?
What type of physical activities can improve bone mass?
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Why is estrogen important for bone health in women?
Why is estrogen important for bone health in women?
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What are some risk factors for osteoporosis?
What are some risk factors for osteoporosis?
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Why is regular exercise important for bone health?
Why is regular exercise important for bone health?
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What can be done to improve calcium intake without relying on supplements?
What can be done to improve calcium intake without relying on supplements?
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What is the significance of maximizing bone mass, especially during youth?
What is the significance of maximizing bone mass, especially during youth?
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What is the primary source of sodium in American diets?
What is the primary source of sodium in American diets?
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What is the role of sodium in nerve function?
What is the role of sodium in nerve function?
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What is the recommended daily intake of sodium for adults under 51 years old?
What is the recommended daily intake of sodium for adults under 51 years old?
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What is a potential health risk associated with acute excessive salt ingestion?
What is a potential health risk associated with acute excessive salt ingestion?
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Why is it essential to taste crystalline 'sugar' before adding it to a formula or recipe?
Why is it essential to taste crystalline 'sugar' before adding it to a formula or recipe?
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What type of activities can result in extensive sodium loss through sweat?
What type of activities can result in extensive sodium loss through sweat?
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What are some common food additives that contain sodium?
What are some common food additives that contain sodium?
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What is the sodium content of a teaspoon of table salt?
What is the sodium content of a teaspoon of table salt?
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What is the minimum daily sodium requirement for humans?
What is the minimum daily sodium requirement for humans?
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What is the recommended daily intake of calcium for women over 50 years of age and adults over 70 years of age?
What is the recommended daily intake of calcium for women over 50 years of age and adults over 70 years of age?
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What is hypercalcemia, and what are its signs and symptoms?
What is hypercalcemia, and what are its signs and symptoms?
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What is osteoporosis, and how many Americans have it?
What is osteoporosis, and how many Americans have it?
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What is the likelihood of osteoporosis-related fractures in older adults?
What is the likelihood of osteoporosis-related fractures in older adults?
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What is the mortality rate for older Americans who experience a broken hip due to osteoporosis?
What is the mortality rate for older Americans who experience a broken hip due to osteoporosis?
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What are some risk factors for osteoporosis that cannot be modified?
What are some risk factors for osteoporosis that cannot be modified?
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At what age do people typically reach their peak bone mass?
At what age do people typically reach their peak bone mass?
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What happens to bone tissue in mid-adulthood?
What happens to bone tissue in mid-adulthood?
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What is the significance of the Upper Level (UL) for calcium?
What is the significance of the Upper Level (UL) for calcium?
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What is the difference between osteoporosis and osteoporosis-related fractures?
What is the difference between osteoporosis and osteoporosis-related fractures?
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What is the percentage of adult Americans that have hypertension?
What is the percentage of adult Americans that have hypertension?
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What is the average amount of sodium consumed by adult Americans per day?
What is the average amount of sodium consumed by adult Americans per day?
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What is the Chronic Disease Risk Reduction Intake (CDRR) for sodium?
What is the Chronic Disease Risk Reduction Intake (CDRR) for sodium?
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What is the primary way to detect hypertension?
What is the primary way to detect hypertension?
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What is the healthy blood pressure reading for adults?
What is the healthy blood pressure reading for adults?
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What is the risk of sodium depletion in endurance athletes?
What is the risk of sodium depletion in endurance athletes?
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What is the recommended way to restore the body's sodium content?
What is the recommended way to restore the body's sodium content?
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What can lead to sodium depletion in infants?
What can lead to sodium depletion in infants?
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Why are salt tablets not recommended for sodium replacement?
Why are salt tablets not recommended for sodium replacement?
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What are the two major risk factors for hypertension that can be modified through lifestyle changes?
What are the two major risk factors for hypertension that can be modified through lifestyle changes?
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What is the daily sodium intake recommended to reduce the risk of hypertension?
What is the daily sodium intake recommended to reduce the risk of hypertension?
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What is the term used to describe individuals who are more likely to develop hypertension as a result of consuming a high-sodium diet?
What is the term used to describe individuals who are more likely to develop hypertension as a result of consuming a high-sodium diet?
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What is the blood pressure category defined as systolic pressure of 120-129 mm Hg and diastolic pressure of less than 80 mm Hg?
What is the blood pressure category defined as systolic pressure of 120-129 mm Hg and diastolic pressure of less than 80 mm Hg?
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What is the recommended daily alcohol intake to reduce the risk of hypertension?
What is the recommended daily alcohol intake to reduce the risk of hypertension?
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What is the term used to describe the buildup of plaque in arteries that can interfere with normal blood vessel function and lead to hypertension?
What is the term used to describe the buildup of plaque in arteries that can interfere with normal blood vessel function and lead to hypertension?
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What is the age-related change that can contribute to increased blood pressure?
What is the age-related change that can contribute to increased blood pressure?
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What is the condition characterized by excessive amounts of body fat that is a major risk factor for hypertension?
What is the condition characterized by excessive amounts of body fat that is a major risk factor for hypertension?
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What is the category of blood pressure defined as systolic pressure of 130-139 mm Hg or diastolic pressure of 80-89 mm Hg?
What is the category of blood pressure defined as systolic pressure of 130-139 mm Hg or diastolic pressure of 80-89 mm Hg?
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What is the blood pressure category defined as systolic pressure greater than 180 mm Hg and/or diastolic pressure greater than 120 mm Hg?
What is the blood pressure category defined as systolic pressure greater than 180 mm Hg and/or diastolic pressure greater than 120 mm Hg?
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What is the main difference between the role of sodium and potassium in maintaining blood pressure?
What is the main difference between the role of sodium and potassium in maintaining blood pressure?
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What are the primary sources of potassium in the American diet?
What are the primary sources of potassium in the American diet?
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What lifestyle changes can Justin Steinbruegge attribute to no longer needing blood pressure medication?
What lifestyle changes can Justin Steinbruegge attribute to no longer needing blood pressure medication?
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What is the purpose of the DASH diet in reducing the risk of CVD?
What is the purpose of the DASH diet in reducing the risk of CVD?
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What is the AI for potassium for men, and for women?
What is the AI for potassium for men, and for women?
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What is the role of potassium in counteracting high sodium intakes?
What is the role of potassium in counteracting high sodium intakes?
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What are some empty calories that Justin could replace with fresh fruit and unsalted nuts in his daily meals and snacks?
What are some empty calories that Justin could replace with fresh fruit and unsalted nuts in his daily meals and snacks?
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What is the risk of taking potassium supplements, especially for individuals with kidney diseases?
What is the risk of taking potassium supplements, especially for individuals with kidney diseases?
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What are the recommended daily limits for alcohol consumption to reduce the risk of hypertension?
What are the recommended daily limits for alcohol consumption to reduce the risk of hypertension?
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What are some practical steps to reduce the risk of hypertension, according to Table 9.12?
What are some practical steps to reduce the risk of hypertension, according to Table 9.12?
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What percentage of magnesium is absorbed by the body from the diet?
What percentage of magnesium is absorbed by the body from the diet?
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What was Justin's initial difficulty in managing his high blood pressure?
What was Justin's initial difficulty in managing his high blood pressure?
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What is the role of magnesium in the body, beyond muscle and nerve function?
What is the role of magnesium in the body, beyond muscle and nerve function?
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What is the recommended eating plan to reduce the risk of CVD and hypertension?
What is the recommended eating plan to reduce the risk of CVD and hypertension?
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What is the significance of including magnesium-rich foods in the diet?
What is the significance of including magnesium-rich foods in the diet?
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What is a potential health risk associated with low potassium intakes?
What is a potential health risk associated with low potassium intakes?
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What was Justin's turning point in improving his health?
What was Justin's turning point in improving his health?
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What is the significance of maintaining a healthy body weight in reducing the risk of hypertension?
What is the significance of maintaining a healthy body weight in reducing the risk of hypertension?
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What type of food is naturally rich in potassium, according to Figure 9.17?
What type of food is naturally rich in potassium, according to Figure 9.17?
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What is the advantage of following the DASH diet?
What is the advantage of following the DASH diet?
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What physiological symptoms may occur due to chloride deficiency?
What physiological symptoms may occur due to chloride deficiency?
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What is the upper limit of chloride intake per day to avoid adverse effects?
What is the upper limit of chloride intake per day to avoid adverse effects?
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What type of foods are rich in sulfur and can help prevent deficiency?
What type of foods are rich in sulfur and can help prevent deficiency?
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Why is sulfur toxicity unlikely from dietary sources?
Why is sulfur toxicity unlikely from dietary sources?
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What are the consequences of mild magnesium deficiency in humans?
What are the consequences of mild magnesium deficiency in humans?
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What is the consequence of consuming excessive sodium chloride?
What is the consequence of consuming excessive sodium chloride?
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Why are cases of sulfur deficiency rare in the United States?
Why are cases of sulfur deficiency rare in the United States?
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Why are older adults at risk of magnesium deficiency?
Why are older adults at risk of magnesium deficiency?
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What is the upper level intake of magnesium that may cause adverse effects?
What is the upper level intake of magnesium that may cause adverse effects?
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Why do people with poorly controlled diabetes have a high risk of magnesium deficiency?
Why do people with poorly controlled diabetes have a high risk of magnesium deficiency?
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What is the primary function of chloride in the human body?
What is the primary function of chloride in the human body?
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What is the recommended daily intake of chloride?
What is the recommended daily intake of chloride?
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Why are people with kidney failure at risk of magnesium toxicity?
Why are people with kidney failure at risk of magnesium toxicity?
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What are some rich food sources of magnesium?
What are some rich food sources of magnesium?
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Why is tap water a source of magnesium?
Why is tap water a source of magnesium?
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What is the significance of dietary magnesium supplements in meeting a person's magnesium needs?
What is the significance of dietary magnesium supplements in meeting a person's magnesium needs?
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What is the recommended daily intake of sodium for healthy people to reduce the risk of chronic disease, including hypertension?
What is the recommended daily intake of sodium for healthy people to reduce the risk of chronic disease, including hypertension?
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What is the amount of sodium in one teaspoon of salt?
What is the amount of sodium in one teaspoon of salt?
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What is the recommended daily intake of sodium for people with high-risk populations, particularly those with elevated blood pressure?
What is the recommended daily intake of sodium for people with high-risk populations, particularly those with elevated blood pressure?
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Why should people check the ingredient list when buying seasonings?
Why should people check the ingredient list when buying seasonings?
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What can be used as an alternative to salt to enhance the taste of food?
What can be used as an alternative to salt to enhance the taste of food?
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Why is it important to have regular blood pressure checks as you grow older?
Why is it important to have regular blood pressure checks as you grow older?
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What was the concern regarding certain medications and COVID-19?
What was the concern regarding certain medications and COVID-19?
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What was the outcome of the research on ACE inhibitors, ARBs, and COVID-19?
What was the outcome of the research on ACE inhibitors, ARBs, and COVID-19?
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Why is it important to read Nutrition Facts panels before purchasing packaged foods?
Why is it important to read Nutrition Facts panels before purchasing packaged foods?
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What is an effective way to reduce sodium intake when eating out?
What is an effective way to reduce sodium intake when eating out?
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Study Notes
Major Minerals
- The major minerals include calcium, sodium, potassium, magnesium, phosphorus, chloride, and sulfur.
- These minerals have important functions in the body, such as maintaining proper fluid balance, transmission of nerve impulses, muscle contraction, and bone health.
Calcium (Ca)
- Calcium is the most plentiful mineral element in the human body.
- More than 99% of the body's calcium is stored in bones and teeth.
- Calcium is essential for muscle contraction, blood clotting, nerve impulse transmission, and cell metabolism.
- Calcium may also play a role in maintaining healthy blood pressure and immune function.
- Good sources of calcium include milk and milk products, leafy greens, and fortified foods such as orange juice and cereals.
Bone Development and Maintenance
- Bones are constantly being remodeled through a process involving bone resorption (tearing down) and bone formation (building up).
- Osteoclasts break down bone tissue where it is not needed, while osteoblasts build bone tissue where it is needed.
- This process allows bones to adapt to changes in physical stress and maintain strength.
Maintaining Normal Blood Calcium Levels
- The body has a complex hormonal system to maintain calcium homeostasis.
- The thyroid and parathyroid glands help regulate blood calcium levels.
- When blood calcium levels are low, the parathyroid glands secrete parathyroid hormone (PTH), which stimulates the release of calcium from bones into the bloodstream.
Osteoporosis
- Osteoporosis is a chronic disease characterized by loss of bone mass and reduced bone structure.
- It leads to fragile bones that are susceptible to fractures, especially in older adults.
- Risk factors for osteoporosis include smoking, lack of physical activity, low estrogen levels in women, and low testosterone levels in men.
- Prevention and treatment of osteoporosis involve a combination of diet, exercise, and supplements to maintain strong bones.
Calcium Supplements
- Many adults take calcium supplements to ensure adequate intake of the mineral.
- However, taking high doses of calcium supplements (>1000 mg/day) may increase the risk of cardiovascular disease.
- Calcium supplements should be taken with vitamin D to enhance absorption, and in divided doses (500 mg at a time) to improve absorption.
Hypertension and Osteoporosis
- Hypertension and osteoporosis are both major public health concerns.
- A diet that is high in sodium and low in potassium may contribute to hypertension.
- Calcium and vitamin D supplements can help maintain strong bones and reduce the risk of osteoporosis.
Improving Intakes of Major Minerals
- Eating a balanced diet that includes a variety of whole foods can help ensure adequate intake of major minerals.
- Including foods rich in calcium, potassium, and magnesium, such as fruits, vegetables, whole grains, and lean proteins, can help maintain overall health.
- Limiting sodium intake and increasing potassium intake can help reduce the risk of hypertension.
- Regular physical activity and maintaining a healthy body weight can also help reduce the risk of osteoporosis.### Fat-Free Milk and Sodium Intake
- Fat-free milk is a healthier option when making cooked oatmeal or pancake batter
- Nonfat milk powder can be added to raw ground meat when preparing hamburgers, meatballs, or meatloaf to reduce sodium intake
- Homemade smoothies can be made with plain low-fat yogurt, fresh or frozen fruit, and fat-reduced ice cream or sherbet to reduce sodium intake
Weight-Bearing Activities and Bone Mass
- Performing weight-bearing activities increases bone mass due to contracting muscles keeping tension on bones
- Examples of weight-bearing activities include low-impact aerobics, basketball, running or jogging, walking or hiking, jumping rope, dancing, stair climbing, strength training with weights, and tennis
- Examples of non-weight-bearing activities include lying in bed, swimming, water aerobics, cycling, and traveling in reduced-gravity situations
Sodium and Health
- Sodium is necessary for maintaining normal fluid balance, transmitting nerve impulses, and functioning of muscles
- The human body can regulate its sodium concentration effectively, but sodium depletion can occur in certain situations such as excessive sweating or diarrhea
- The recommended daily intake of sodium is 180 mg, but the Adequate Intake (AI) is 1500 mg/day
- High sodium intake is associated with increased risk of chronic disease, including hypertension, heart disease, and stroke
- The Upper Limit (UL) for sodium intake is 2300 mg/day
Hypertension
- Hypertension is a condition characterized by persistently elevated blood pressure
- Hypertension is a serious public health problem in the United States, affecting approximately one-third of adult Americans and one in nine children
- High blood pressure generally does not cause symptoms until organs and blood vessels have been damaged
- The best way to detect hypertension is to have regular blood pressure screenings
- Healthy blood pressure readings are less than 120/80 mm Hg
Risk Factors for Hypertension
- Advanced age
- African-American ancestry
- Obesity
- Physical inactivity
- Smoking cigarettes
- Excess alcohol and sodium intake
- Type 2 diabetes
- Family history
- Obesity and physical inactivity are modifiable risk factors
Reducing Sodium Intake
- Read the Nutrition Facts panels before purchasing packaged foods
- Prepare homemade meals and snacks as much as possible
- Use herbs and spices that do not contain added salt while preparing foods
- Taste food before salting it
- Adjust to eating foods with less salt
- Do not keep a salt shaker on the table
- Request no salt be added to food when ordering in restaurants
The DASH Diet
- The Dietary Approaches to Stop Hypertension (DASH) diet is low in sodium, total fat, and saturated fat, and high in fruits, vegetables, whole grains, and fat-free or low-fat dairy products
- Research indicates that people can lower their blood pressure and reduce their risk of CVD by following the DASH diet, losing excess body fat, and increasing their physical activity level### Potassium (K)
- Primary positively charged ion in intracellular fluid
- Most of the body's potassium is found in cells
- Plays a key role in maintaining proper fluid balance and transmitting nerve impulses
- Associated with lower blood pressure values
- Necessary for contracting muscles and maintaining normal kidney function
- Potassium-rich diets, such as the DASH diet, may lower blood pressure
- Food sources: fruits, vegetables, milk, whole grains, dried beans, and meats
- Table 9.13 lists foods that are among the richest sources of potassium
Sources of Potassium
- Fresh fruits and vegetables, and fruit and vegetable juices are good dietary sources
- Milk, whole grains, dried beans, and meats are also major contributors
- Table 9.13 lists foods that are among the richest sources of potassium
- Figure 9.17 indicates food groups that are naturally good sources of potassium
Did You Know?
- Salt substitutes often contain potassium chloride, or potassium chloride salt
- People with severe kidney diseases may accumulate toxic levels of potassium in their blood
- Fruits and vegetables are recommended sources of potassium instead of potassium chloride
Dietary Adequacy
- AI for potassium for men: 3400 mg per day, for women: 2600 mg per day
- Americans tend to consume less than the AI amount of potassium
- The Dietary Guidelines include potassium as a “nutrient of public health concern”
- People can raise their potassium intakes by following the DASH diet and/or increasing their consumption of foods rich in potassium
Risks of Potassium Deficiency
- Symptoms: loss of appetite, muscle cramps, confusion, and constipation
- Individuals suffering from excessive sweating, vomiting, diarrhea, or kidney diseases that increase potassium excretion are at risk for potassium depletion
- The body is unable to conserve potassium as well as sodium; therefore, the risk of potassium deficiency is greater than that of sodium deficiency
Magnesium (Mg)
- Participates in more than 300 chemical reactions in the body
- Helps regulate normal muscle and nerve function, as well as blood pressure and blood glucose levels
- Necessary for maintaining strong bones and a healthy immune system
- Sources: plant foods such as spinach, green leafy vegetables, whole grains, beans, nuts, seeds, and chocolate
- Table 9.14 lists some commonly eaten foods that supply magnesium
Dietary Adequacy
- Adult RDAs for magnesium: 310-320 mg/day for women, 400-420 mg/day for men
- Many people in the United States do not consume recommended amounts of magnesium
- Cases of magnesium deficiency rarely occur among healthy members of the population
- However, alcoholics, people with poorly controlled diabetes, or people who use certain medications (diuretics) that increase urinary excretion of magnesium are at high risk of magnesium deficiency
Risks of Magnesium Deficiency
- Symptoms: tiredness, weakness, loss of appetite, nausea, and vomiting
- Older adults are also at risk of magnesium deficiency because their bodies absorb less of the mineral and urinary losses increase with advancing age
- Chronic magnesium deficiency may increase the risk of osteoporosis because the deficiency lowers the level of calcium in blood
Magnesium Toxicity
- Rarely occurs from eating too much magnesium-rich food
- Toxicity is more likely to occur from ingesting excessive magnesium from laxatives, antacids, or dietary supplements that contain the mineral
- UL for magnesium: 350 mg/day
- Symptoms: diarrhea, abnormal heartbeat rhythm, inability to relax muscles, personality changes, and seizures
Chloride (Cl–)
- Primary negatively charged ion found in extracellular fluid
- Essential for maintaining proper fluid and acid-base balance
- Needed for the transmission of nerve impulses and production of hydrochloric acid (HCl) in the stomach
- Sources: table salt (sodium chloride), seaweed, rye, tomatoes, celery, and olives
- AI for chloride: 2300 mg
Risks of Chloride Deficiency
- Deficiency unlikely because of high amounts of sodium chloride in the typical American diet
- However, deficiencies may be seen in cases of extreme vomiting, diarrhea, and/or sweating, as well as with diuretic use
- Symptoms: fatigue and loss of appetite
Sulfur (S)
- Component of several organic compounds, including amino acids and vitamins
- Essential for the activity of many enzymes and as part of antioxidant molecules
- Sources: protein-rich foods, wines, and sulfites
- Cases of sulfur deficiency are rare but can occur in people who have severe protein deficiency
- Sulfur toxicity is unlikely from dietary sources
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Description
Learn about the major minerals in the human body, including calcium, and their essential functions such as maintaining fluid balance, nerve impulses, muscle contraction, and bone health.