The human body needs energy for maintaining body temperature and metabolic activity and for supporting physical work and growth. The energy is required to promote satisfactory growth in infants and children and to maintain constant appropriate body weight and good health in adults. The factors which influence energy needs are age, body size, physical activity and in some extent, climate and altered physiological status such as pregnancy and lactation. Daily energy expenditure of adults depends on their occupational activity, sleep and non-occupational activity. Total energy expenditure is predicted by Basal Metabolic Rate(BMR) multiplied by Physical Activity Level (PAL).
Dietary sources of Energy:
|Nutrient||Foods||Nutrient Content for 100g Edible Portion|
||Cooking oils (Groundnut,Gingelly,Palmolein,Mustard,Coconut etc.,)||900 Kcal|
|Walnut (Juglans regia)||671 Kcal||Coconut dry (Cocos nucifera)||624 Kcal|
|Almond (Prunus amygdalus)||609 Kcal|
|Ground nut (Arachis hypogea)||520 Kcal|
|Rice (Oryza sativa )||356 Kcal|
|Jaggery, cane (Saccharum officinarum)||353 Kcal|
|Dals( Soyabean,Greengram, Blackgram,Redgram,Bengalgram,Lentil)||335 Kcal|
|Wheat(Triticum aestivum)||321 Kcal|
|Chicken (skinless)||168 Kcal|
|Milk (Buffalo)||107 Kcal|
Nutritive Value of Indian Foods-2012 & Indian Food Compositon Tables-2017, ICMR-National Institute of Nutrition,Hyderabad.