How much protein a child, an adult and an old man must take daily
Answers
If you're 11-13 years old: Multiply your weight in pounds by 0.455; this gives you about how many grams of proteinyou need each day. If you're 15-18 years old: Multiply your weight in pounds by 0.36 to estimate how manygrams of protein you need each day. Keep in mind that this is just an estimate.
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Daily protein needs
Daily protein needsFor younger children, it breaks down by age: Children ages 4 to 9 need 19 grams of protein each day. Those between ages 9 and 13 need 34 grams. For adolescents, ages 14 to 18, it varies by gender: Boys need 52 grams and girls need 46 grams.
"No one has done an age-related curve of protein needs," Layman says, "but by age 65, you need the combination of exercise and high-quality protein. Older adults are less efficient in using amino acids for muscle protein synthesis than are young adults.
Healthy men over 70 should aim for 56 grams of protein a day from meat, chicken, fish, beans and dairy products. Shoot for 46 grams of protein if you are a female of the same age.
Kids require approximately 1-1.5 grams of protein for every TWO pounds of body weight, or more precisely, 1-gram protein per kg (1kg=2.2lbs). Thus, a 40-lb (18.2 kg) child needs approximately 18 grams protein per day!
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