Zinc

What is zinc?

Zinc is a trace element that is found in trace amounts in the body, but is nonetheless essential.

It is present in the body in the amount of only 2 g (approximately), but it is nonetheless essential. Most of it is concentrated in the muscles and bones, but it is also present in the skin, hair, brain, liver, kidneys, prostate, sperm, etc. It is not stored by the body, and must therefore be supplied through diet.

What is its function and what are its benefits?

Zinc has anti-inflammatory and healing properties, and is therefore well known for its action in the case of acne.

It is also essential for DNA and RNA synthesis, regulation of gene expression, metabolism and protein synthesis, and therefore plays a key role in cell growth (foetal development, growth in children and adolescents, etc.).

It also acts as an antioxidant, fighting free radicals, and has an impact on the immune system.

It would also be important for male fertility, by intervening in the production of spermatozoids. It contributes to the synthesis of insulin, which regulates blood sugar levels. Finally, it is also essential to the proper functioning of the nervous system.

Where to find it?

The richest source of zinc is oysters. It is also found in shellfish, meat (mainly red), eggs, oilseeds (nuts, hazelnuts, etc.), whole grains, legumes (lentils, beans, peas, etc.), etc.

Note that zinc from animal sources is better assimilated than zinc from vegetable sources.

Deficiency and excess

Zinc deficiencies are mostly observed in developing countries, linked to malnutrition problems. However, minor zinc deficiencies are relatively common in modern societies.

In particular, certain populations should be particularly careful about their zinc intake, such as pregnant women, the elderly, adolescents, athletes, vegetarians (animal sources are better assimilated), people who drink alcohol, diabetics, people with intestinal absorption problems (celiac disease, Crohn's disease...), etc.