Last update: 2.5.2017.


Supplement Watch - Zinc

General information for Zinc

Zinc is vital for many biological functions. It plays a key role with many enzymes in the human body. It is found in all parts of the body but muscles and bones contain most of the body’s zinc (about 90%). Also prostate gland and semen contain considerably high concentrations of zinc.

Benefits of Zinc

Boosted immune system. Stronger skin. Stronger nails. Vision. Fertility.

Deficiency symptoms / disease

Wikipedia:Zinc deficiency

Overdose symptoms / disease

Wikipedia:Zinc toxicity

FDA facts for Zinc

(Daily value/Recommended dietary allowance/Adequate intake)

Recommended intakes of nutrients vary by age and gender and are known as Recommended Dietary Allowances (RDAs) and Adequate Intakes (AIs). However, one value for each nutrient, known as the Daily Value (DV), is selected for the labels of dietary supplements and foods. A DV is often, but not always, similar to one's RDA or AI for that nutrient. DVs were developed by the U.S. Food and Drug Administration (FDA) to help consumers determine the level of various nutrients in a standard serving of food in relation to their approximate requirement for it. The label actually provides the %DV so that you can see how much (what percentage) a serving of the product contributes to reaching the DV.

Data from U.S. Department of Health & Human Services, National Institutes of Health, Daily values.

RDA/AI value not found in database

Food sources for Zinc





Sesame seeds




External links

Wikipedia-Zinc MedlinePlus-Minerals NIH-Zinc