Sun exposure is necessary for many reasons. One of them is that thanks to skin exposure to solar radiation, our body can naturally produce vitamin D. But we must not forget that inadequate and unprotected sun exposure can lead to serious skin problems. So, how do we find the balance between sun and vitamin D?
Discover with Toskani how sunscreen affects vitamin D synthesis and how to use it correctly to obtain the necessary amount of vitamin D.
Why is vitamin D important?
Vitamin D is a fat-soluble micronutrient that performs multiple functions in the body. For example, it is crucial for calcium absorption, which in turn strengthens bones and prevents bone health-related diseases such as osteoporosis.
Likewise, vitamin D plays an important role in modulating the immune system, muscle function, and cardiovascular health. In fact, vitamin D deficiency is associated with a higher risk of infections, autoimmune diseases, and even some types of cancer. Ultimately, it is a hormone essential for overall health, so maintaining adequate levels from childhood to old age is vital.
Relationship between the sun and vitamin D production
The main natural source of vitamin D is exposure to sunlight. When the skin is exposed to UVB rays, a process begins in which 7-dehydrocholesterol is converted into previtamin D3, and then into vitamin D3, which is later activated in the liver and kidneys. This mechanism is fundamental for the natural production of vitamin D. However, it must be balanced with protective measures to avoid sun damage.
It is important to understand that although sun and vitamin D are directly related, overexposure can cause photoaging, burns, and increase the risk of skin cancer.
What are normal vitamin D levels?
Vitamin D levels in the body are measured in nanograms per milliliter (ng/mL). According to the Spanish Association of Dietetics and Food Sciences (SEDCA), a level of 30 to 100 ng/mL is considered optimal for most people.
Therefore, vitamin D levels below 20 ng/mL are considered deficient, while levels above 50 ng/mL may indicate excessive supplementation or high sun exposure. Periodic blood tests can provide information about your vitamin D status.
How does sunscreen affect vitamin D synthesis?
Given the relationship between sun and vitamin D, there is frequent concern that using sunscreen might block vitamin D production by preventing UVB rays from activating the process in the skin. And while it is true that sunscreens reduce UVB radiation penetration, various studies show that proper use does not completely prevent the synthesis of this vitamin.
The key, as always, is to find a balance: use sunscreen to avoid skin damage while still receiving a moderate amount of sunlight necessary to produce vitamin D. Additionally, most people obtain vitamin D through diet or supplements, which helps complement sun exposure.
Is it possible to use sunscreen and get enough vitamin D?
Yes, it is possible to balance sun protection and vitamin D synthesis. In fact, the innovative Toskani sunscreen line is designed to offer high photoprotection (SPF50+) without compromising the skin’s ability to synthesize vitamin D. One of the star products is the Sun Shiel-D Body and Face Spray SPF50+. This spray sunscreen is broad-spectrum, water-resistant, and suitable for all skin types. Besides providing very high photoprotection, it enhances vitamin D synthesis thanks to the active Lithops Cell Nectar.
Another essential product from this Toskani sunscreen line is the Sun Shiel-D Colored Fluid Facial Cream SPF50+, which also includes this interesting vitamin D synthesis enhancer. Undoubtedly, it is an ideal product to protect facial skin, even out tone, and provide radiance and hydration.
As we have seen, sun and vitamin D have a vital relationship for our health. Making it possible safely for our skin is as simple as including moderate sun exposure, following a balanced diet, and using sunscreen properly, preferably with products that enhance this necessary vitamin D synthesis.