nutrition
(+talk bit abt nutrients) |
food at work in the body (food from digestion until its used for functions in body) |
“Nutrition is science of food and its rxn to health. It is concerned primarily with parts played by the nutrients in body for growth, devel & maintenance.” (WHO) |
study of nutrition - what nutrients we need, how much, why, & where to get them |
functions of food
1. physiological |
oxidation of consumed food helps
provide energy (for activities, to convert food to usable nutrients,to grow, keep warm)
build body (from child to adult size, main body str, replace worn out cells)
regulate bodily activities (heart beat, maintain body temp, muscle contraction, water balance, blood clotting, removal of waste)
build immunity - improve body's resistance to disease |
2. social |
write abt diff food in diff ceremonies (diwali, thanksgiving, birthdays, marriages etc)
food is distributed during various religious functions + ceremonies + various stages of life (birthday, marriages etc)
food is used as expression of love, symbol of happiness, friendship and social acceptance
helps create a relaxed atmosphere |
3. psychological |
security, love and attention
familiar foods make us feel secure normal attachment to the mother’s cooking
sharing of food is a token of friendship and acceptance
in friendly gatherings, we try unfamiliar foods and thus enlarge our food experiences - With time and repeated experience, strange foods become familiar and new tastes are formed |
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nutrients
chemical substances in food that provide energy + materials needed by body |
components of food needed in adequate amts for energy - to grow, reproduce, have healthy life |
includes water, groups of: proteins, fats, carbohydrates, minerals and vitamins |
40 essential nutrients + body processes = produce 1000s of substances necessary for physical fitness |
types: acc to their - chemical property, function, conc, essentiality & nutritive value |
diff foods r made of no. of chemical components |
acc to chemical nature - split to 2 - micro & macro |
1. micro |
vitamins, minerals |
2. macro |
proteins, lipids (fats), carbohydrates, water |
food we consume daily - rice, wheat, meat, fruits, vegetables, milk etc |
each nutrient has its own function - but the various nutrients must act in unison for effective action. |
write abt - carbohydrates, proteins, fats, minerals, vitamins, dietary fibre and water |
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Important terms
Food |
substance taken into body to meet its needs for energy - for health, growth, reproduction |
Optimum nutrition |
person recieves essential nutrients for body + extra ‘reserved’ nutrition (in proper propotions) |
Nutritional status |
condition of body wrt to consumption and utilization of food
Good – well balanced diet
Poor – inadequate/excessive intake or poor utilization of nutrients |
Malnutrion |
inadequate food intake in quantity (under nutrition) or quality |
Basal metabolic rate (BMR) |
min energy required for body's maintence at rest (with no physical activity) |
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