a sparing action on vitaminB (i.e) if fat consumption is adequate, not much vitamin B is needed. ) Fats improve the palatability of the diet and give satiety value.(ie.)feeling of fullness in the stomach. ) The calories in fat spare proteins from being oxidized for energy. ) Cholesterol is needed for synthesis of sex and adrenal hormones (steroid hormones).
DO YOU KNOW...? when oxidized one gram of fat gives kcal. - - Proteins and lipids addition, the excess carbohydrates are also converted to fat for storage in the body resulting in obesity. ) Slows down digestion and absorption of foods.
) Interferes with the absorption of calcium by combining with calcium to form an insoluble calcium soap. ) Cause ketosis unless adequate carbohydrate is present to complete the oxidation of fat. Phrynoderma is cured rapidly by the administration of linseed or safflower seed oil rich in EFA. Infants fed on an EFA deficient diet develop irritation and changes in the skin within a few weeks.
The skin appear as dryness and desquamation with oozing in the folds. Diarrhoea may also occur, supplementation of the diet with linoleic acid helps to restore the skin to normal condition. b) Effects of Excess of fat ) Leads to Obesity because more than required calories are consumed. In Table .
: ICMR Recommended Dietary Allowances for Fats Group Particulars Visible fat (g/day) Man Sedentary work Moderate work Heavy work Woman Sedentary work Moderate work Heavy work Pregnant woman Lactating woman ( - months) Lactating woman ( - months) Infants – months - – months Children – years – years - years Boys – years Girls – years Boys – years Girls – years Boys – years Girls – years - - Proteins and lipids Fig . : Effects of EFA deficiency - Phrynoderma DO YOU KNOW...? Ketosis