The Most Nutritious Whole Foods

Iron

What is it: A common metal that's essential to nearly all life forms.

Why you need it: Key for oxygen transport, cell growth, and immunity.

BEST SOURCES
Chicken liver (3.5 ounces, 100 calories)
70 percent daily value
Soybeans (1 cup, 297 calories)
50 percent daily value
Spinach (1 cup, 40 calories)
36 percent daily value
Tofu (4 ounces, 86 calories)
34 percent daily value
Sesame seeds (1/4 cup, 205 calories)
30 percent daily value
Kidney beans (1 cup, 225 calories)
29 percent daily value
Venison (4 ounces, 180 calories)
28 percent daily value
Lima beans (1 cup, 215 calories)
25 percent daily value
Beef tenderloin (4 ounces, 240 calories)
23 percent daily value
Roast turkey (3.5 ounces, 220 calories)
10 percent daily value