When the sun is out, the world looks friendlier straight away and your mood lifts. Walks on the beach or a cup of coffee on the terrace are no problem in summer. Even in the shade or under a cloudy sky, an hour outdoors gives us enough UV-B radiation to get the body’s own vitamin D production going. But that is not the only good news. Anyone who can get some sun in moderation is also doing their teeth a favour.
Vitamin D protects against decay
The UV-B radiation in sunlight allows vitamin D to form in our body. Vitamin D matters for a balanced calcium level in the blood, for strong bones and for healthy teeth. Some can also be taken through food or supplements, but these cannot replace natural sunlight. Apart from fish, most foods contain only relatively small amounts of vitamin D. The positive effect of vitamin D has been shown in various studies, and it also strengthens the enamel. Both children’s and adults’ teeth are better protected against decay when plenty of UV-B light is absorbed and converted into vitamin D. It also supports the immune system, which is then better able to fend off harmful bacteria — including those that cause decay.
