The Most Nutritious Whole Foods

Vitamin B12

What is it: An unusual vitamin formed by microorganisms like bacteria and yeast (and found in the various and sundry animals that ingest them).

Why you need it: Plays a key role in developing blood cells and nerve cells and processing protein. Helps protect individuals with anemia and gastrointestinal disorders.

BEST SOURCES
Clams (3 ounces, 126 calories)
1404 percent daily value
Duck liver (3 ounces, 114 calories)
756 percent daily value
Oysters (6, 250 calories)
720 percent daily value
Calf liver (4 ounces, 187 calories)
690 percent daily value
Rainbow trout (3 ounces, 130 calories)
90 percent daily value
Top sirloin (3 ounces, 160 calories)
25 percent daily value
Skim yogurt (1 cup, 137 calories)
25 percent daily value
Milk (1 cup, 121 calories)
14 percent daily value
Lean cured ham (3 ounces, 130 calories)
10 percent daily value
Hard-boiled egg (80 calories)
10 percent daily value
Chicken breast (140 calories) 
6 percent daily value