(i) Age :- Age plays great role in making diet for like in growing age a child need more protein but old aged people should avoid more proteins and fats but should take more minerals & vitamins
(ii) Gender :- Sex difference causes variation in diet more caloric requirement to male & less for female.
(iii) Profession :- Heavy physical activities work out needs more calories demand & less physical activities work out less calories demand.
(iv) Body weight :- Obese person need fibrous food more, while slim or lean needs more protein.
(v) Specific Sports Diet :- Various sports need specific diet like long distance runner need more fat, contact body games player need more protein, explosing strength player needs more carbohydrates.
(vi) Sufficient Roughages :- It is non nutritive but important, It consist fibers that found in fruits & vegetables.
(vii) Pregnancy or feeding mother :- Pregnant mother needs extra diet - carbohydrates, protein, fat, vitamines, minerals etc.
(viii) Diet During Health Problems :- Injured person should take more protein and minerals patients should be given diet full of mineral & vitamins.
(ix) Seasonal Food :- Seasonal food is easily available and economical moreover the nutritional value is high.
(x) Climatic Condition :- The effects the diet like in hot places food should be has oily fried, while in coaster region the food should be more liquid.
(xi) Natural Diet :- Natural sources of diet are early digested by body less polluted not synthetic food.
(xii) Doctor’s Recommendation :- Diseased or sick person should take accords to doctor recommendation and patient ovoid fried food jaundice patience avoid protein.
(xiii) Eating habbits & social Customes :- They also effect the diet of individual some take low vegetables veg. other don’t take it so it is according to customs also.
