10 Questions
What is a consequence of a pregnant woman being malnourished?
The baby's development may be affected before birth.
What is a function of vitamin A in the body?
It is necessary for healthy eyes, especially in dim light.
What is a source of vitamin A?
Egg yolks, fish liver oils, dairy products, green vegetables, apricots, and carrots.
What is a consequence of a lack of vitamin A?
Blindness in dim light due to eye damage.
What is a function of vitamin C in the body?
It helps cells stick together in the skin and takes part in aerobic respiration.
What is a consequence of a lack of vitamin C?
Scurvy.
What is a source of vitamin D?
Fish liver oils, egg yolks, and cream.
What is a consequence of a lack of vitamin D?
Rickets.
What is a function of calcium in the body?
It is necessary for making strong, healthy bones and teeth.
What is a consequence of a lack of calcium?
Weak and crumbly bones and teeth.
Study Notes
Balanced Diet
- A balanced diet consists of carbohydrates, proteins, fats and oils, vitamins, and minerals in the right proportions.
- It also includes fibre and water.
- Nutritional requirements vary from person to person and country to country.
Importance of Water
- The human body is almost 70% water.
- Water is lost through exhaling, sweat, urine, tears, and faeces, and needs to be replaced by drinking at least 1 litre a day.
- The amount of water needed depends on the climate of the region.
Importance of Fibre
- Fibre is not a nutrient, but helps move food through the digestive system and prevents constipation.
- A high-fibre diet reduces the risk of heart disease and some cancers.
- Beans and pulses are a good source of fibre.
Effects of Deficiencies
- Deficiency diseases affect growth, development, and health in children, and overall health in adults.
- A lack of vitamin A causes blindness in dim light due to eye damage.
- Vitamin C deficiency leads to scurvy, causing bleeding gums, skin peeling, leg swelling, and eventual death.
- Vitamin D deficiency leads to rickets, causing soft and bendy bones in children, and weakened bone structure in adults.
- Calcium deficiency causes weak and crumbly bones and teeth.
Learn about the importance of a balanced diet, including the essential nutrients and food types, to maintain a healthy lifestyle. Discover the key elements of a healthy diet and how to make informed food choices.
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