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.
According to the Dietary Guidelines for Americans 2010 , women over 50 need 1,600 calories daily if they are sedentary , 1,800 calories if they âre moderately active and 2,000 to 2,200 calories per day if they are active ; while men over 50 need 2,000 to 2,200 calories if they are sedentary , 2,200 to 2,400 calories when they âre moderately active ...