Other seafood sources for high iron and B12 include oysters, trout, salmon and haddock. For people over 50 who must limit saturated fat and cholesterol, seafood sources make superior choices to meats for building up your blood.
More specifically, sedentary men ages 19 to 30 need 2,400 to 2,600 calories; 31- to 50-year-old men require 2,200 to 2,400 calories; and sedentary men over the age of 50 need 2,000 to 2,200 calories each day to maintain a healthy body weight.
How many calories per day should an average person eat? A man between the ages of 19 and 30 with a sedentary lifestyle needs 2,400 calories; a more active male requires 200 more. Females between the ages of 19 and 30 with a sedentaâ¦ry lifestyle require 2,000 calories per day; a more active lifestyle requires 200 more as well.