Sunscreen blocks the production of vitamin D in the skin: one of the causes of a common vitamin D deficiency. Worldwide, about one billion people have a vitamin D deficiency.
A large amount of vitamin D is produced in the skin under the influence of sunlight. The sun is the most important source of vitamin D. Between 12 and 3 o'clock is the time of the day when the sun is the most harmful (sunburn). Therefore, it is recommended to use sunscreen and to stay in the shadow. However for the production of sufficient vitamin D the skin should be exposed to the sun during these hours without the use of sunscreen. So, these two recommendations contradict each other.
Vitamin D is essential to your health. It is necessary for strong bones and teeth, for good muscle function and the immune system. If you protect yourself well from the sun, you should get your vitamin D from another source: nutrition. Not only during the winter do you need vitamin D from nutrition and nutritional supplements, but also in the summer.
Möller's products are rich in vitamin D. With Möller's cod liver oil, you get enough natural vitamin D! One daily portion (= 5 ml) contains 100% of the recommended daily amount. So you do not have to worry about insufficient vitamin D and you can use as much sun protection as you like.