A block of talc. Talc is a metamorphic mineral that results from the metamorphism of magnesian minerals such as serpentine, pyroxene, amphibole, and olivine, in the presence of carbon dioxide and water. This is known as talc carbonation or steatization and produces a suite of rocks known as talc carbonates.
Vitamin D does this so effectively that studies have shown it can reduce inflammation by anywhere up to one third making it just as effective as many medicines available over the counter. As well as stopping inflammation, regular consumption of vitamin D-rich foods can help reduce pain and stress on joints.
Darker skin pigments and sunscreen use can significantly decrease the body's ability to absorb the ultraviolet radiation B (UVB) rays required to produce vitamin D. The sunshine vitamin-vitamin D-can be produced in the body with sun exposure or consumed in food or supplements.A sunscreen with sun protection factor (SPF) 30 can reduce the body's ability to synthesize the vitamin by 95%.ne microgram of vitamin D is equal to 40 IU of vitamin D. The recommended intakes of vitamin D throughout life were updated by the US Institutes of Medicine (IOM) in 2010 and are currently set at: 1  Infants 0-12 months - 400 IU (10 mcg). 2  Children 1-18 years - 600 IU (15 mcg).