Vitamin C

What it does: Strengthens immune system – fights infections. Makes collagen, keeping bones, skin and joints firm and strong. Antioxidant, detoxifying pollutants and protecting against cancer and heart disease. Helps make anti-stress hormones, and turns food into energy.

Deficiency Signs: Frequent colds, lack of energy, frequent infections, bleeding or tender gums, easy bruising, nose bleeds, slow wound healing, red pimples on skin.

Best food sources: Peppers, watercress, cabbage, broccoli, cauliflower, strawberries, lemons, kiwi fruit, peas, melons, oranges, grapefruit, limes, tomatoes.