The sun is much more than light and heat. One of its most important functions in our body is to activate the production of vitamin D, an essential nutrient that acts as a powerful antioxidant and is related to the prevention of several diseases, including cancer.
Why is vitamin D so important?
Vitamin D serves multiple functions in the body:
It promotes the absorption of calcium, protecting bone health.
It regulates the immune system, helping to fight infections.
Contributes to cardiovascular and metabolic health.
According to various studies, adequate levels of vitamin D are associated with a lower risk of certain types of cancer.
The sun: the main source of vitamin D
Although vitamin D can be obtained in small amounts from some foods (such as fatty fish, eggs, and fortified dairy), most of it comes from sun exposure.
A few minutes of direct sunlight on your arms, legs or face are enough to activate its production, although the amount varies depending on age, skin tone, time of day and where you live.
How much sun is enough?
It is not about overexposing yourself, as ultraviolet rays can damage the skin and increase the risk of skin cancer. It is recommended to:
10 to 20 minutes of moderate sun exposure, 3 times a week, without sunscreen on small areas of the body.
Avoid the hours of maximum radiation (between 10:00 a.m. and 3:00 p.m.).
Always wear appropriate protection if exposure is going to be prolonged.
What if I don’t get enough sun?
In people with little sun exposure, darker skin, older adults or in winter, vitamin D levels can drop. In these cases, the doctor may prescribe vitamin D supplements, always personalized according to the needs of each patient.
Vitamin D and Cancer
Scientific research has shown that vitamin D not only strengthens bones, but also has a role in cancer prevention. It helps keep cell growth in check, reduces inflammation, and supports a more efficient immune system.
Although not a “magic cure,” maintaining adequate levels is an important preventive health strategy.
