Podcast
Questions and Answers
Choose the minerals that are classified as trace minerals
Choose the minerals that are classified as trace minerals
________ is a necessary trace mineral for oxygen delivery and immune function.
________ is a necessary trace mineral for oxygen delivery and immune function.
Iron
Match the term with its best definition
Match the term with its best definition
Heme iron = Iron found in meat that is efficiently absorbed Nonheme iron = Iron that is not absorbed efficiently; found in meat, vegetables, grains, supplements, and fortified or enriched foods
What happens when the body has adequate iron stores?
What happens when the body has adequate iron stores?
Signup and view all the answers
What is the RDA for iron in women under the age of 50?
What is the RDA for iron in women under the age of 50?
Signup and view all the answers
Which of the following minerals are trace minerals?
Which of the following minerals are trace minerals?
Signup and view all the answers
If an individual ate primarily locally produced foods, which location would have the least likelihood of developing goiter?
If an individual ate primarily locally produced foods, which location would have the least likelihood of developing goiter?
Signup and view all the answers
Choose the functions of iron
Choose the functions of iron
Signup and view all the answers
Thyroid hormone controls the rate of ____ metabolism.
Thyroid hormone controls the rate of ____ metabolism.
Signup and view all the answers
What is the main source of heme iron?
What is the main source of heme iron?
Signup and view all the answers
Which of the following are good dietary sources of iodine?
Which of the following are good dietary sources of iodine?
Signup and view all the answers
________ is the major storage form of iron that also helps regulate iron absorption.
________ is the major storage form of iron that also helps regulate iron absorption.
Signup and view all the answers
Soy products, turnips, and broccoli all contain compounds that
Soy products, turnips, and broccoli all contain compounds that
Signup and view all the answers
The male RDA for iron is _____ and the female (between 19 and 20 years of age) RDA for iron is _____.
The male RDA for iron is _____ and the female (between 19 and 20 years of age) RDA for iron is _____.
Signup and view all the answers
Which of the following groups has marginally adequate intakes of iodine?
Which of the following groups has marginally adequate intakes of iodine?
Signup and view all the answers
_________ is an enlargement of the thyroid gland as a result of an iodine deficiency.
_________ is an enlargement of the thyroid gland as a result of an iodine deficiency.
Signup and view all the answers
In what country was zinc deficiency first discovered?
In what country was zinc deficiency first discovered?
Signup and view all the answers
Select the primary function of iodine.
Select the primary function of iodine.
Signup and view all the answers
Which of the following are functions of zinc?
Which of the following are functions of zinc?
Signup and view all the answers
What is the best food source for iodine?
What is the best food source for iodine?
Signup and view all the answers
Zinc is readily found in which of the following foods?
Zinc is readily found in which of the following foods?
Signup and view all the answers
Which of the following foods contain goitrogens?
Which of the following foods contain goitrogens?
Signup and view all the answers
What is the adult RDA for iodide?
What is the adult RDA for iodide?
Signup and view all the answers
The UL for zinc is _____ mg per day.
The UL for zinc is _____ mg per day.
Signup and view all the answers
Zinc deficiencies were first observed in diets high in unleavened bread. The food group they were most likely to lack that contributed to the zinc deficiency was
Zinc deficiencies were first observed in diets high in unleavened bread. The food group they were most likely to lack that contributed to the zinc deficiency was
Signup and view all the answers
Zinc is necessary for which of the following?
Zinc is necessary for which of the following?
Signup and view all the answers
Recall that selenium is a component of several
Recall that selenium is a component of several
Signup and view all the answers
Select rich food sources of zinc
Select rich food sources of zinc
Signup and view all the answers
Fluoride is not considered an essential nutrient because
Fluoride is not considered an essential nutrient because
Signup and view all the answers
Select food sources of selenium that could be consumed by a vegan
Select food sources of selenium that could be consumed by a vegan
Signup and view all the answers
Exceeding the UL for zinc may result in
Exceeding the UL for zinc may result in
Signup and view all the answers
The UL for selenium is ________ ug/day.
The UL for selenium is ________ ug/day.
Signup and view all the answers
Selenium functions within the body as a component of several proteins referred to as ______.
Selenium functions within the body as a component of several proteins referred to as ______.
Signup and view all the answers
Conclusive evidence suggests that selenium, an antioxidant, has been shown to significantly reduce the risk of cancer.
Conclusive evidence suggests that selenium, an antioxidant, has been shown to significantly reduce the risk of cancer.
Signup and view all the answers
Select the food source that provides the most selenium per serving.
Select the food source that provides the most selenium per serving.
Signup and view all the answers
Exceeding the daily UL for selenium can lead to toxicity, known as _______.
Exceeding the daily UL for selenium can lead to toxicity, known as _______.
Signup and view all the answers
_________ can remineralize the tooth surface and prevent cavities.
_________ can remineralize the tooth surface and prevent cavities.
Signup and view all the answers
Study Notes
Trace Minerals Overview
- Trace minerals include zinc, iron, selenium, and copper.
Iron Functions and Sources
- Essential for oxygen delivery and immune function.
- Heme iron (found in meat) is efficiently absorbed; nonheme iron (found in plants, grains, and supplements) is not efficiently absorbed.
- Adequate iron stores prompt the small intestine to produce ferritin, which inhibits further iron absorption.
- RDA:
- Women under 50: 18 mg/day
- Men: 8 mg/day
Dietary Sources of Iron
- Main sources of heme iron: Meat.
- Iron-rich foods also include baked beans and roast beef.
Iodine and Thyroid Health
- Good sources of iodine: Seaweed, milk, saltwater fish.
- Iodine is vital for thyroid hormone synthesis; deficiency leads to goiter (enlargement of the thyroid).
- Young American women may have marginal iodine intake.
Zinc and Its Functions
- Functions as a cofactor for numerous enzymes and is crucial for DNA synthesis and wound healing.
- Dietary sources include baked beans, roast beef, and oysters.
- Zinc deficiency linked to low meat consumption, prevalent in diets high in unleavened breads.
Selenium in Health
- A component of enzymes known as selenoproteins.
- Rich vegan sources include Brazil nuts and baked beans.
- Antioxidant properties of selenium may reduce cancer risk, but conclusive evidence is lacking.
Fluoride and Dental Health
- Fluoride contributes to remineralizing tooth surfaces to prevent cavities.
- It is not classified as an essential nutrient since it does not support growth or sustain life.
Miscellaneous
- UL for zinc: 40 mg/day; exceeding this may lead to decreased HDL cholesterol, immune dysfunction, and gastrointestinal issues.
- UL for selenium: 400 µg/day; excess intake can result in selenosis, a toxic condition.
- Primary sources of selenium include tuna (high per serving).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of trace minerals essential for health with this quiz based on Chapter 12 of Nutrition in Health. It covers key minerals such as zinc, iron, selenium, and copper. Engage with definitions and their roles in bodily functions to enhance your understanding.
