1. Nutrition and Health:

– Nutrition is required for physiological, mental and intellectual development.

-Low protein and energy cause malnutrition and cause disorder to health.

2. Nutrition and Immunity:

– Malnutrition decreases immunocompetence and makes body vulnerable to attack of d/s. – – – Low nutrition leads weakness of lymphoid tissue including T-cells (needs carotenoids, Zn, Cu, Vit. B6), phagocytosis impaired in under nutrition (vit. C and Zn).

3. Nutrition and ageing:

– Deficiency of natural antioxidants i.e. Vit. C, E, A cause damage to cells.

– Bioactive phytochemical of food helps in scavenge free radicals and protects cell from damage.

4. Nutrition and mental function:

– Nutrition are precursors of neurotransmitters.

– eg: tryptophan is precursors for serotonin i.e. related to sleep, food intake and mood required in old age).

5. Nutrition and CHD:

– BMI (wt in kg/ height in meter square) more than 25 means over weight and more than 30 means undesirable. Ideal weight maintain by proper nutrition, exercise. CF and omega – 3 FA reduce serum cholesterol.

– All SFA are hypercholesterolaemic.

6. Nutrition and cancer:

– tobacco- cancer of mouth,

– high fat – development of rectal and breasts cancer,

– high animal protein, red meat- prostrate, uterine, ovarian cancers,

– CF intake – inhibit colon cancer,

– beta-carotene, vit. A, vit. C, riboflavin-protects cancer of Alimentary and resp. tracts

– Grilling , smoking of foood- carcinogenic

– Food with fungi (aflatoxin)- cause liver and kidney cancer.