Vitamin D boosts the immune system 維生素D增強免疫系統
Vitamin D is absorbed through the skin via sunlight. The rest can come from your diet.
But a lot of people worldwide have vitamin D deficiency. Some statistics show, that this could be even one billion people. The are various reasons for our Vitamin D deficiency:
-we don’t have enough Vitamin D in our diet (natural sources of Vitamin D are eggs, fish, cod liver oil, mushrooms),
-we are surrounded by air pollution,
-we don’t expose our skin to natural sunlight,
-we use sun protection,
-many adults also have vitamin D deficiency irrespective of the above.
Almost everyone knows, that the main function of Vitamin D is the mineralization of our bone system.
But we should remember that it is also a very important part of our immune system. Low levels of this vitamin have been associated with frequent infections. Vitamin D supplementation helps to keep the immune system balanced during the cold and flu season.
Vitamin D also facilities hormone regulation. Researchers have found that this vitamin helps regulate adrenaline, noradrenaline and dopamine production. For this reason low vitamin D levels can be responsible for depression.Several studies suggest that people with low vitamin D levels have an increased risks of heart disease, hypertension, and diabetes. The study included seniors shows , that older adults with low vitamin D level experienced memory loss faster than with healthy level.
Some studies show, that having a low blood level of vitamin D may be linked to a higher risk of developing some cancers. It's not clear how vitamin D may lower cancer risk, but certain reasons may explain it. For example, some researchers suggested that vitamin D has an anti-inflammatory effect and may interfere with cancer cell pathways. Also people who have healthy lifestyle are outside more often and are exposed to sunlight.