Vitamin D and Sunscreens: Benefits and Side Effects

Vitamin D and Sunscreens: Benefits and Side Effects

Jul 14, 2016 By Kapuluan Coconut

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Sunscreen is a controversial subject.

Some people think it protects us from the sun and side effects of over exposure – Cancer.

Some say sunscreen facilitates cancer, baking harsh chemicals into the skin, while giving people over confidence to spend all day in sun, exposed to high levels of UV rays.

What most overlook is that, as humans, we need the sun. It keeps us alive, and healthy. Vitamin D is crucial to human health; helping to regulate the immune system and the neuromuscular system, while also playing a major role in the life cycle of human cells.

Vitamin D is so important that your body makes it by itself — but only after skin exposure to sufficient sunlight.

The Vitamin D Council — a scientist-led group promoting vitamin D deficiency awareness — suggests vitamin D treatment might be found helpful in treating or preventing autism, autoimmune disease, cancer, chronic pain, depression, diabetes, heart disease, high blood pressure, flu, neuromuscular diseases, and osteoporosis.

Vitamin D deficiency has now been linked to breast cancer, colon cancer, prostate cancer, heart disease, depression, weight gain, and other maladies. These studies show that people with higher levels of vitamin D have a lower risk of disease, although they do not definitively prove that lack of vitamin D causes disease — or that vitamin D supplements would lower risk.

While Vitamin D may be an ongoing debate, our belief is that sun is essential to human health, but like anything, moderation is usually the best formula. A little bit of sun every day can do wonders for our physical and mental health!

However, there is a larger issue lurking amongst the arguments; it’s no secret that many sunscreens contain harmful ingredients, which cause problems for human health. We highlight some of the ingredients to watch out for below:

vitamin D and sunscreen

PABA: and PABA derivatives are commonly used in sunscreens as ultraviolet B (UVB) filters. PABA use has declined over the years, but its derivatives are still around today. PABA may alter thyroid activity and PABA derivatives may have additional endocrine disrupting properties.

UV radiation is more likely to damage DNA in the presence of PABA, and DNA damage to the skin increases the risk of skin cancer. These studies raise serious concerns about the potential for PABA to sensitize skin to radiation although human studies are needed to confirm these findings. In the absence of such studies, precaution may be warranted.

Octinoxateo: also called Octyl methoxycinnamate or (OMC), is a UV filter. It can be absorbed rapidly through skin. Octinoxate has been detected in human urine, blood and breast milk, which indicates that humans are systemically exposed to this compound. Octinoxate is an endocrine disruptor that mimics estrogen and can disrupt thyroid function. Octinoxate increases cell proliferation in cells that grow in response to estrogen exposure. Lifetime estrogen exposure is an established risk factor in the development and progression of breast cancer.

Homosalate: is a widely used chemical in sunscreens and skin care products with SPF. Homosalate is a potential endocrine disruptor and studies in cells suggest it may impact hormones. In addition to direct health concerns following homosalate exposure, the chemical may also enhance the absorption of pesticides in the body. In human breast cancer cells, which grow and multiply in response to estrogen, homosalate exposure led to 3.5 times more cell growth and multiplication.


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