ALL LIVING THINGS NEED FOOD AS A SOURCE OF ENERGY FOR THE GROWTH AND REPAIR OF TISSUES, MAINTAIN HEALTH AND TO PROTECT THE BODY FROM DISEASES.
FOOD CAN BE DIVIDED INTO 7 CLASSES :
1. CARBOHYDRATE
2. PROTEIN
3. FAT
4. VITAMIN
5. MINERAL SALTS
6. DIETARY FIBRE
7. WATER