Our ancestors spent most of their time outdoors – initially when we were hunter-gatherers, and also later, when humankind developed agriculture. That meant that, as a species, we spent a lot of time getting sun on our skins: a key factor in building vitamin D, also known as the sunshine vitamin.
However, nowadays we spend most of our time indoors, severely limiting our vitamin D production. That is why it is estimated (in the United States, at least) that about one in three people are deficient in vitamin D.
Vitamin D is extremely important to health, playing a role in improved immunity, sleep, weight-loss and more, and it is also key in avoiding or treating depression.
Although some foods contain vitamin D, it is impossible to get enough vitamin D from food sources alone. A good way to boost your vitamin D levels is by getting healthy sun exposure – unless you have a specific medical problem that makes sun exposure risky, sitting in the sun for around 15 minutes while the sun is high in the sky will already help.
If you want to learn more about how this fascinating vitamin works and how you can use it to help you manage your health, visit this great resource: Vitamin D 101.