Biology- Healthy Living

Healthy Living

Regular exercise and a balanced diet are needed to keep the body healthy. Too little food leads to a person being underweight and prone to certain types of illness, while too much food and not enough exercise leads to a person being overweight and other types of ill health.

Nutrients

A mixture of different types of food in the correct amounts is needed to maintain health.

The main food groups are carbohydrates, fats and proteins.

This table summarises some typical sources of these nutrients and why our bodies need them.

Imbalanced diets

An imbalanced diet causes a person to become malnourished. For example:

• too little food may lead to a person being underweight
• too much food may lead to a person being overweight.

A poor diet may also lead…