When most people think about sun protection, they think about preventing sunburns and reducing the risk of skin cancer. While these are certainly important reasons to wear sunscreen, UV exposure can affect women’s health in ways that go far beyond the skin, and understanding these connections can help you protect your health at every stage of life.
Melasma
Melasma is a common skin condition that occurs when pigment-producing cells become overactive, causing patches of darkened skin, most often on the cheeks, forehead, upper lip, and chin. Hormonal fluctuations can make the skin more sensitive to UV radiation, increasing the likelihood of pigmentation changes. It is therefore common during pregnancy, hormonal birth control use, and hormone replacement therapy.
Because UV rays trigger melanin production, even brief sun exposure can worsen existing discoloration or trigger new patches. It is important to remember UV exposure can occur even on cloudy days, through windows, and during everyday activities like walking the dog or running errands. Daily SPF, wide-brimmed hats, and protective clothing are a few ways to limit sun exposure to prevent melasma and keep existing pigmentation from worsening.
UV and Folic Acid Depletion
Folic acid, also known as vitamin B9, is essential for DNA synthesis, cell growth, and overall reproductive health, but is best known for its role in supporting a healthy pregnancy. Folate, the natural form of folic acid, is sensitive to heat and light, and therefore, excessive UV exposure may contribute to folate breakdown in the body. This connection is especially important for women who are pregnant or trying to conceive, as adequate folate levels can help reduce the risk of neural tube defects and support healthy fetal development during the earliest stages of pregnancy.
Sun protection is not a substitute for prenatal supplements, but protecting your skin from excessive UV exposure is another way to support your overall reproductive health.
Vitamin D
You probably often hear “I need more sun to get enough vitamin D,” but it’s much more complicated than this. Many people still have low vitamin D levels despite spending time outdoors because vitamin D production depends on several factors, including skin tone, geographic location, season, time of day, age, and sunscreen use.
Vitamin D plays an important role in women’s health, supporting bone health, immune function, fertility, pregnancy outcomes, management of conditions like PCOS, and more. If you’re concerned about your vitamin D levels, your provider can order blood testing to help determine whether you’re deficient, and if so, discuss the best options for you. Supplements are often a more predictable and safer source than intentional sun exposure.
Heat, Summer Weather, and Vaginal Health
While the summer months can be fun, they can bring unique challenges for vaginal health. Heat and humidity create environments where yeast and bacteria thrive, leading to common summer concerns like yeast infections, bacterial vaginosis, chafing and irritation, and increased discomfort during everyday activities like exercise or travel. While you’re spending time outside this summer, consider adopting the following simple habits to help reduce your risk:
- Change out of wet swimsuits promptly.
- Avoid sitting in sweaty workout clothes for long periods.
- Wear breathable cotton underwear.
- Stay hydrated.
- Avoid scented products that can disrupt vaginal pH.
If you are experiencing persistent itching, unusual discharge, odor, burning, or discomfort that doesn’t improve, don’t hesitate to reach out to your provider.
SPF 30+ Isn’t Optional
When it comes to sun protection, understanding sunscreen labels can help you make informed decisions. First and foremost, SPF measures protection against UVB rays, which are primarily responsible for sunburn. SPF 30 blocks approximately 97% of UVB rays, and SPF 50 blocks approximately 98%. Higher SPF offers slightly more protection, but proper application and reapplication are often more important than the number on the bottle.
It’s also important to use “broad-spectrum” sunscreen, as you are getting protection against these UVB rays in addition to UVA rays, which contribute to aging, pigmentation, and deeper skin damage. Both types of rays contribute to skin damage and skin cancer risk, so it is important to be protected.
No matter which sunscreen you choose, apply generously and don’t forget commonly missed areas like your lips, ears, scalp and hairline, neck, and tops of the feet. Reapply every two hours when outdoors, and more frequently if swimming or sweating. Consistent use of sunscreen can help prevent skin cancer, reduce melasma flares, and protect your skin during pregnancy and hormonal changes.
For women, the impact of UV exposure extends far beyond sunburns. The good news is that protecting yourself doesn’t have to be complicated. At Essex County OB/GYN, we’re here to help you through every stage of your health journey, from family planning and pregnancy to menopause and beyond. If you have questions about hormonal changes, pregnancy, vaginal health, or preventive care, schedule an appointment with our team today.