I was asked, “What is the difference between vitamin D2 and D3?” – Good advice from Dr. Harold   image source: hyat Vitamin D3 is produced in your skin from cholesterol (7-dehydrocholesterol) triggered due to exposure to the UVB radiation from the sun. But unfortunately, Sri Lankans even in Sri Lanka may not get sufficient vitamin D3, being a tropical country with full day sunshine, because they are indoors at home and at workplace, travel in air-conditioned vehicles, and always attempts to avoid the direct sun. Traditionally, Sri Lankans don’t seem to wear hats. You need at least half hour exposure to direct UVB rays of the sun for pigmented people and twenty minutes exposure for light skin individuals. Light skin people could get sunburnt if over-exposed and becomes a major risk factor for skin cancer. The alternative is to take vitamin D capsules as a supplement. This ‘sunshine’ vitamin ...

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