UV rays from the sun make your skin vitamin D. How much do you need?
Research has shown that you produce vitamin D approximately from sun power 3, Weeronline writes. This is because at sun strength 3 or more so-called UV radiation can reach the earth’s surface. UV-B radiation is responsible for the production of vitamin D, but also ensures that you burn. In our country there is usually sun power 3 or higher in the months March to September. That is also the period when you get the most vitamin D.
For many people, 15-30 minutes in the sun is enough to get the daily amount of vitamin D. And the higher the sun power, the faster the required amount of vitamin D is produced. If you go outside in the middle of the day at sun strength 6-8, 10-15 minutes of sun can be enough. So just cycling to the supermarket will give you enough vitamin D without burning. You have to be careful around the longest day of the year, because then fair skin can burn after 5-15 minutes.
In winter, the sun is not strong enough to produce vitamin D. For certain groups it may be wise to take extra vitamin D. This is especially true for women over 50 and men 70 and older. Supplements can also offer a solution for people who produce less vitamin D due to heredity.
