Acne, dry skin and eczema are only a few skin problems that may be caused by the lack of skin zinc. This trace mineral is present in all the organs of our body and has a tremendous importance for our health, especially for our immune system and skin.
Deficiency of zinc
A moderate skin zinc deficiency will result in poor immune response, skin problems (rashes, acne), hair loss, allergies and impairments of smell and taste.
A severe deficiency can cause growth problems, including poor bone maturation, liver troubles, reduced mental development and even fertility problems. Zinc deficiencies are frequently encountered because smoking, alcohol, coffee and stress are depleting our reserves.
For our skin, zinc is indispensable. It helps the treatment of psoriasis, skin infections, acne, eczema, ulcerations and wounds healing. Zinc oxide can lead to more efficient recovery from burns and protects against UV radiation and free radicals.
Sources
The best source for our daily supply of zinc is high protein food. The mineral can be found in fish, beef, pork, lamb, chicken and other meats. Fruits and vegetables also contain zinc but its absorption is limited, leading to a high chance of deficiency for strict vegetarians and vegans.
Dietary fibers and phytic acid, found in bran and nuts, inhibit zinc absorption. Milk, butter, cheese, eggs, beans and nuts are good sources of zinc for them.
A few good dietary sources are: liver (9 mg/100g), wheat germ (7 mg/100g), beef, yolk, duck liver (4 mg/100g), soy (3 mg/100g), been, pea and fish (2 mg/100g)
Cooking
Like many minerals, zinc can be lost during cooking, canning or excessive processing. For example, processed flour is losing about 80 percents from the original quantity; navy beans will lose 50 percents after cooking and pastas 75 percents.
To retain the maximum amount of zinc in your food avoid prolonged cooking, canning and use a minimal quantity of water.
Intake and Symptoms of High Intake
US RDA intake for adults is 15 milligrams per day. Pregnant women and feeding mothers needs extra supplies of zinc: around 6 milligrams per day.
High intake of zinc (more than 100 milligrams per day) over a long time is actually toxic and, instead of helping our immune system, organs and skin health, will obstruct the metabolism of other minerals. Symptoms may include nausea and diarrhea.