Vitamin D is one of the most discussed vitamins when it comes to health, energy, the immune system, and bone health. At the same time, there are many misconceptions regarding how we actually get enough of it – especially concerning sun, skin, and UV exposure.
It is true that the skin can produce Vitamin D when exposed to UVB radiation from the sun. However, this does not mean that prolonged sunbathing is necessary to maintain normal levels. For many, short daily sun exposure is often sufficient, for example, about 10–15 minutes on the face and forearms, depending on factors such as skin type, season, latitude, cloud cover, clothing, and time of day.
It is also important to understand that more sun does not automatically mean better Vitamin D status. The body has a limited capacity to produce Vitamin D via the skin, while increased UV exposure simultaneously means an increased risk of sun damage, pigment changes, premature skin aging, and skin cancer. Therefore, leading dermatological and cancer prevention organizations recommend against using intentional sunbathing as a strategy to "top up" Vitamin D.
For those of us living in Sweden and the rest of the Nordics, the issue becomes even more relevant. During large parts of the autumn, winter, and early spring, the sun's UVB radiation is often too weak for the skin to produce any significant amount of Vitamin D. This is sometimes called a "Vitamin D winter". This means that even people who are outdoors regularly during these months often need to rely more on diet and supplements than on the sun.
Common dietary sources of Vitamin D include:
- fatty fish such as salmon, mackerel, and herring
- fortified dairy products or plant-based drinks
- eggs
For many adults in the Nordics, Vitamin D supplements during winter and spring can be a reasonable and safer complement, especially if one spends little time in daylight or has a limited intake through diet. However, exact needs vary between individuals, and if uncertain, one should always consult healthcare providers or follow national recommendations.
The most important thing is therefore not to "chase the sun," but to think balanced and long-term about both skin health and nutritional status. Short daily exposure can often be sufficient during the summer half of the year, but intentional, repeated, or intense sunbathing should not be seen as a health method. Protecting the skin while ensuring an adequate intake of Vitamin D via diet or supplements is, in most cases, a more sustainable choice.
At Evolvience, we believe in smarter health routines that make everyday life easier. That is why we develop innovative tools that can help you keep track of your vitamins and create better daily routines – simple, practical, and well-thought-out.
