Vitamin D

What it does: Helps maintain strong and healthy bones by retaining calciumWhat it does: Promotes a healthy heart, clots blood, promotes healthy nerves, contracts muscles, improves skin, bone and dental health, relieves aching muscles and bones,....

Deficiency Signs: Joint pain or stiffness, backache, tooth decay, muscle cramps, hair loss.

Best food sources: Herrings, mackerel, salmon, oysters, cottage cheese, eggs.