carbohydrates- (sugars&starch). These r important for ENERGY for chemical reactions and heat. Sources includes pasta, rice , potatoes and bread
Protein- these r important for: growth and repair, enzymes, hormones, functioning immune system and energy. Sources include meat, pulses, fish, eggs and meats.
Fats(lipids)- these r important for: energy (as a store in the body), heat insulation and protection(kidneys). source r daily products and fatty meats. Fats contain twice as much energy per gram than carbohydrates.
Roughage- this is a food that u cannot digest and so will pass through the alimentary canal, undigested and unabsorbed. This type of food allows for regular bowel movements to occur and prevents overeating. Sources r cereals , fruit and vegetables. If u dont take enough roughage u will suffer from constipation.
Water- this allows to reaction to occur and allows blood flow. Sources include drinks and wattery foods. If you dont take enough water u will suffer dehydration.
Vitamin C- this helps the formation of the conective tissue giving us strong supple skin. Sources: citrus fruits. Not enough vitain C in ur body will lead to the deficiency disease scurvy with symptoms of bleeding gums and joints
Vitamin D- helps the body to absorb calcium and in the formation of strong bones and teeth.Soyrces: milk and expousure of skin to the sun. Not enough vitamin D in the diet will lead to the deficiency disease rickets with suffers having bended limbs.