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2. Essential amino acid - Wikipedia

   en.wikipedia.org/wiki/Essential_amino_acid

   An essential amino acid, or indispensable amino acid, is an amino acid that cannot be synthesized from scratch by the organism fast enough to supply its demand, and must therefore come from the diet. Of the 21 amino acids common to all life forms, the nine amino acids humans cannot synthesize are valine , isoleucine , leucine , methionine ...

3. Protein as nutrient - Wikipedia

   en.wikipedia.org/wiki/Protein_as_nutrient

   There are nine essential amino acids which humans must obtain from their diet in order to prevent protein-energy malnutrition and resulting death. They are phenylalanine, valine, threonine, tryptophan, methionine, leucine, isoleucine, lysine, and histidine. [2] [4] There has been debate as to whether there are 8 or 9 essential amino acids. [5]

4. Complete protein - Wikipedia

   en.wikipedia.org/wiki/Complete_protein

   The second column in the following table shows the amino acid requirements of adults as recommended by the World Health Organization [11] calculated for a 62 kg (137 lb) adult. Recommended Daily Intake is based on 2,000 kilocalories (8,400 kJ) per day, [12] which could be appropriate for a 70 kg (150 lb) adult.

5. Human nutrition - Wikipedia

   en.wikipedia.org/wiki/Human_nutrition

   The most important aspect and defining characteristic of protein from a nutritional standpoint is its amino acid composition. [43] For all animals, some amino acids are essential (an animal cannot produce them internally so they must be eaten) and some are non-essential (the animal can produce them from other nitrogen-containing compounds ...

6. Nutritionists Explain Whether Women Over 50 Can Try ... - AOL

   www.aol.com/nutritionists-explain-whether-women...

   The recommended daily allowance (RDA) for protein for people aged 50+ is 0.8 gm/kg body weight (0.36 grams/pound or 51 grams of protein for a 140-pound person or 65 grams for a 180-pound person ...

7. Dietary Reference Intake - Wikipedia

   en.wikipedia.org/wiki/Dietary_Reference_Intake

   Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A and selenium) that can be harmful in large amounts. This is the highest level of sustained daily nutrient consumption that is considered to be safe for, and cause no side effects in, 97.5% of healthy individuals in each life stage and sex group.