Don’t Be Fooled by Sunscreen Myths! Protect Your Skin as Temperatures Soar

As temperatures rise and summer kicks into high gear, a concerning trend has emerged on social media, spreading false information about the safety of sunscreen.

Experts are urging Canadians to be cautious of misleading claims that suggest sunscreen can cause cancer.

Proper use of sunscreen is actually one of the most effective ways to prevent potentially deadly conditions such as melanoma.

The Spread of Misinformation

The Quebec Order of Chemists recently issued a warning about a troubling trend on social networks.

Influencers have been disseminating false and misleading information about sunscreen, asserting that its ingredients are harmful and can cause cancer.

These claims, which lack any scientific basis, have the potential to endanger public health by deterring people from using sunscreen.

One particular influencer on TikTok, with a following of 570,000, advised against using any sunscreen that contains ingredients with “any funny words other than zinc.”

Such statements, however, disregard the comprehensive medical literature that supports the safety of sunscreen ingredients.

Expert Opinions on Sunscreen Safety

Dr. Julia Carroll, a dermatologist based in Toronto, emphasizes that much of the misinformation circulating online fails to consider the broader medical context.

She points out that the toxicity of a substance depends on its dosage.

While excessive amounts of almost any substance can be harmful, even toxic substances like botulinum toxin can be safe in small quantities.

Therefore, the claims that certain sunscreen ingredients are inherently dangerous are unfounded.

The Importance of Sunscreen

Contrary to some influencers’ claims, the Canadian Cancer Society states that about 65 percent of melanoma cases are caused by ultraviolet (UV) radiation, primarily from the sun.

Melanoma is a form of skin cancer that originates in the skin’s pigment-producing cells, known as melanocytes.

A recent report on projected cancer estimates in Canada for 2024 highlighted that the incidence of melanoma continues to rise for both men and women, although the mortality rate has remained relatively stable.

Cancer, attributes this increase to several factors, including more skin exposure during hotter summers due to climate change and an aging population, which is more susceptible to cancer.

Monitoring the UV Index

In Canada, weather forecasts and apps provide information on the UV index, which is crucial for skin protection.

Cheryl Peters advises that when the UV index reaches 3 or higher, it is essential to wear sunscreen and reapply it regularly.

The primary defense against UV radiation is to minimize sun exposure during peak hours, from 10 a.m. to 3 p.m.

Seeking shade, wearing tightly woven clothing, and using accessories like wide-brimmed hats and sunglasses are effective ways to protect the skin.

The Role of Vitamin D

While it is true that moderate sun exposure helps the body produce vitamin D, which is vital for bone health and other bodily functions, the risks of excessive sun exposure far outweigh the benefits. Prolonged exposure to UV radiation has been linked to skin damage, premature aging, and an increased risk of skin cancer, making it essential to balance sun exposure with protective measures.

Vitamin D plays a crucial role in calcium absorption, which is necessary for maintaining strong bones and preventing conditions like osteoporosis. It also supports immune function, cardiovascular health, and even mood regulation, with some studies suggesting that low vitamin D levels may contribute to seasonal affective disorder (SAD).

However, relying solely on sunlight for vitamin D can be problematic, especially in regions with long winters or limited sunlight exposure. Factors such as skin pigmentation, geographic location, and lifestyle habits can affect an individual’s ability to synthesize vitamin D efficiently.

The Canadian Cancer Society recommends obtaining vitamin D through diet and supplements rather than risking skin damage from UV radiation. Foods rich in vitamin D include fatty fish, egg yolks, fortified dairy products, and mushrooms exposed to sunlight.

In cases where dietary intake is insufficient, supplementation is a safe and effective alternative. Health professionals often advise adults to take between 600 and 2000 IU (International Units) of vitamin D daily, depending on age, health conditions, and sun exposure levels.

Types of Sunscreen: Mineral vs. Chemical

Sunscreens are broadly categorized into two types: mineral and chemical. Understanding the differences between these formulations can help individuals choose the best option for their skin type and lifestyle needs.

Mineral sunscreens, which contain zinc oxide or titanium dioxide, create a physical barrier on the skin that reflects UV light. These formulations are particularly beneficial for people with sensitive skin, as they are less likely to cause irritation or allergic reactions compared to chemical sunscreens.

One drawback of mineral sunscreens is their tendency to leave a white cast on the skin, which can be more noticeable on darker skin tones. However, newer formulations have improved blendability, making them more cosmetically appealing.

Chemical sunscreens, available in creams or sprays, form a thin protective film on the skin that absorbs UV rays and converts them into heat. These sunscreens are often preferred for their lightweight texture, making them easier to apply and wear under makeup.

Some chemical filters, such as oxybenzone and octinoxate, have raised environmental concerns due to their potential impact on marine ecosystems. As a result, many brands now offer reef-safe formulations that exclude these ingredients while still providing effective UV protection.

Canadian guidelines recommend incorporating sunscreen application into your morning routine, using one to two teaspoons for the head and neck and two to three tablespoons for the body. Reapplying every two hours, especially after swimming or sweating, is crucial to maintaining adequate protection throughout the day.

Choosing the Right Sunscreen

The Canadian Dermatology Association advises using sunscreens with an SPF rating of at least 30 and opting for broad-spectrum products that protect against both UVA and UVB rays.

Additional Considerations

For individuals with sensitive skin or those prone to allergic reactions, mineral-based sunscreens are recommended.

Chemical sunscreens have been known to cause skin reactions in a small number of people.

Additionally, chemical sunscreens can harm coral reefs, so when vacationing in areas with coral reefs, using mineral-based sunscreens is advised.

Lip balms with SPF protection are often overlooked but are an important part of comprehensive sun protection.

Lips are susceptible to sun damage, and using an SPF-rated lip balm can prevent long-term harm.

Conclusion

As summer temperatures soar, it is crucial to separate fact from fiction when it comes to sunscreen.

Despite the misleading claims circulating on social media, proper use of sunscreen remains a vital measure to protect against skin cancer, including melanoma.

By understanding the importance of sunscreen and choosing the right products, Canadians can enjoy the summer sun safely and responsibly.