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.
Perhaps it's time to stop talking about fatty foods and admit that we simply eat too many calories. Twenty-five years ago, the average American consumed about 1,850 calories each day. Since then, our daily diet has grown by 304 calories (roughly the equivalent of two cans of soda). That's theoretically enough to add an extra 31 pounds to each person every year.