What are the nutrients humans require most in order to live a healthy life? How are these nutrients beneficial to us?
- Ted KLv 710 months agoFavorite Answer
1) # 1 requirement is energy. That is derived mainly from from carbohydrates and fat, but protein can serve as an energy source under certain conditions. Of course, energy is required for cells in the body to do any kind of biochemical/electrical/mechanical work
2) Protein: for growth and maintenance. More specifically the 9 so-called, dietary essential amino acids (EAAs) which cannot be synthesized by the body from other presursors, and so must come from the diet. The body needs all 20 amino acids in order for protein synthesis to occur. If one or more of the EAAs is not present, then protein synthesis will not happen. EAAs: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine
3) Essential fatty acids: absolutely essential: α-linolenic, linoleic; conditionally essential (e.g. under certain conditions such as during development or in disease states): docosahexaenoic acid, gamma-linolenic acid; required during brain development, required as components of cell signaling mechanisms, modulation of inflammation, etc.
4) Minerals/trace minerals: calcium, phosphorus, sodium, potassium, magnesium, manganese, selenium, cobalt, zinc, copper, iron, iodine; serve various functions, including body fluid homeostasis, nerve & muscle function, enzyme cofactors, oxygen transport, nucleic acid synthesis and stability, protein structure/function, bone development/maintenance & repair, hormone production, etc.
5) Vitamins: water soluble--B vitamins, folic acid, ascorbic acid; fat-soluble--A, D, E, K: cofactors for various enzymes involved in metabolism, protective (antioxidant) functions, organ development and differentiation, regulation of calcium, bone development, blood clotting.
- ZirpLv 710 months ago
All nutrients are essential, even those we only need tiny amounts of.
Apparently some people are so fat that they can survive in good health for a year, on multivitamins only. People who go on hungerstrike when they are not fat die after about two months
Your body can store enough vitamin B12 to last you two years
- az_lenderLv 710 months ago
Of course you must get enough energy to burn, but you can get that from almost any kind of food. Essential nutrients that your body can't make on its own are certain amino acids, certain fatty acids, and vitamins and minerals. For most of these substances, only a small intake is required, but a deficiency in any of them can bring about disease. The amino acids are necessary to enable your body to grow and to replace tissue. Polyunsaturated fatty acids exert anti-inflammatory effects. You can look up the function of various vitamins and minerals...
- UndisclosedLv 610 months ago
The food pyramid comes to mind.