9/10

Zinc

Zinc deficiency may show up as hair loss, white spots on fingernails, poor sense of taste, weakened immunity, wound-healing difficulty and more. In obese people, zinc supplements may improve sensitivity to insulin, a hormone that keeps blood sugar from spiking.

Tip: To avoid stomach upset from zinc supplements, take them with food.

Daily dose: 10–30 mg zinc picolinate or zinc citrate

Try: Zand Echinacea Zinc