ZIMSEC O Level Combined Science Notes: Malnutrition
- Malnutrition is lack of proper nutrition
- It is a result of either not having enough to eat
- Or not eating enough of certain nutrients that the body requires or
- Eating too much of a certain type of nutrient of food component
- It is a result of a person not eating a balanced diet for a prolonged period
- The human body becomes malnourished when it does not receive enough of the right kinds of food
- It can also be a result of under-nourishment
- This is when a person does not eat enough food
- Malnutrition can lead to diseases such as kwashiorkor
Kwashiorkor
Causes
- It is a result of protein deficiency
- This is when a child does not eat enough
- It is common in children under the age of five (5)
Symptoms
- The abdomen swells/An abnormally swollen belly
- The skin cracks and becomes scaly
- The hair takes a reddish/brown colour
- Thin limbs (also known as Oedema in the limbs)
- The child becomes very weak
- Stunted growth
Effects of kwashiorkor
- Prolonged protein deficiency may affect the liver
- Stunted growth
- Retards brain development
Obesity
- Malnutrition can also be caused by taking too much of a certain kind of food
- High carbohydrates intake results in the excess food being stored as fat under the skin
- The person eating too much carbohydrates may gain weight and become obese
- Obesity is a form of malnutrition
Symptoms
- The person is overweight
- The person might also have rolls of fat on their body
Effects
- Increased risk of developing diseases such as
- Heart diseases
- Type 2 diabetes
- Bone and Joint diseases
Curing malnutrition
- Most forms of malnutrition can be corrected by eating a balanced diet
- Obesity can be cured by exercises and eating a balanced diet.
To access more topics go to the Combined Science Notes page.