Epic Health

Do Sunscreens Prevent Cancer or Cause Cancer?

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(Cancun, Mexico. The hairy legs belong to my wife)

Over the years we have been lead to believe that the sun is our enemy because the sun causes skin cancer. And since the sun causes skin cancer, we should stay out of the sun, or wear sunscreen to block those harmful UV rays that cause skin cancer. But according to the latest research, the sun may not be the real problem.

Before I get to that, here are some fun facts about skin cancer you should know…

Skin cancer is on the rise
According to the National Cancer Institute, over the past 35 years the rate of new melanoma cases among American adults has tripled, from about 8 per 100k people in 1975 to about 24 per 100k in 2010.

Also alarming, the melanoma death rate for white American men, is up about 64% from 2.64 deaths per 100k in 1975 to 4.10 per 100k in 2010.

According to the CDC, since the year 2000, the rates of new melanoma cases among both men and women have been climbing by 1.9% per year. Even teenagers experienced a 2% per year increase between 1973 and 2009 (Wong 2013).

More than 2 million Americans develop skin cancer each year
Most cases involve one of two disfiguring, but rarely fatal, forms of skin cancer called basal and squamous cell carcinomas. 40-50% of Americans who live to age 65 will be diagnosed with one of these at least once during their life, according to the EPA. Studies suggest that basal and squamous cell cancers are strongly related to UV exposure over many years. But “strongly related” is not necessarily causative. We are all exposed to the sun and we all die eventually, so one could also make the case that the sun is killing us all… But of course it’s not.

Fair skinned people living close the equator have the highest risk, which explains why Australia has the highest skin cancer rates in the world.

This may surprise you, but the exact cause of melanoma is still not known.
Scientists have established some risk factors for melanoma:  family history, indoor tanning, fair skin, freckles, the number of moles on a your skin, and exposure to ultraviolet radiation and severe sunburns (CDC 2013, NCI 2013). They suggest you limit these risk factors by stopping indoor tanning, limiting exposure to UV radiation, and avoiding severe sunburns. I’m going to add one more. Eat lots of colorful fruits and vegetables with protective anti-oxidants and phytonutrients every day.

People I know who’ve healed melanoma

Tanning beds cause cancer
In 2009 the World Health Organization classified tanning beds as carcinogenic and the International Agency for Research on Cancer calculates that if you start using tanning beds before age 30, your risk of developing melanoma jumps by 75 percent. On May 6, 2013 FDA commissioner Margaret A. Hamburg proposed banning tanning beds for anyone under 18 and requiring new warnings on tanning beds stating that they “can damage your skin and increase your risk of developing skin cancer.” A 2012 CDC report found that 1/3 of young white women ages 18-25 used a tanning bed an average of 20 times in the previous year.

In the last 35 years, tanning bed use has exploded and melanoma rates have tripled.
So let me just get bossy for a second:  Stop using tanning beds.
Spray on tanning is bad too, don’t do that either.

Sunscreens alone do not reduce the rate of skin cancer
Every major public health authority – the FDA, National Cancer Institute, and the International Agency for Research on Cancer – has come to this same conclusion. (FDA 2011a, IARC 2001b, NCI 2011). One reason sunscreens cannot guarantee protection from skin cancer appears to be that sunscreen users differ in important ways from sun avoiders. Another reason is that U.S. sunscreens are not as protective as they should be.

Sunscreen may lower squamous cell carcinoma risk
Several researchers have found that regular sunscreen use lowers the risk of squamous cell carcinoma (Gordon 2009, van der Pols 2006) and diminishes the incidence of actinic keratosis – sun-induced skin changes that may advance to squamous cell carcinoma (Naylor 1995, Thompson 1993). But researchers have not found strong evidence that sunscreen use prevents basal cell carcinoma (Green 1999, Pandeya 2005, van der Pols 2006, Hunter 1990, Rosenstein 1999, Rubin 2005).

Whether sunscreen can help prevent melanoma is still unknown
Both UVA and UVB rays can cause melanoma and there is a strong correlation between melanoma risk and the number of sunburns someone has had, particularly in childhood (Dennis 2010). In 2009, the most recent year for available data, 61,646 people, including 35,436 men and 26,201 women, were diagnosed with melanoma, and 9,199 Americans died from it (CDC 2013). White Americans have much higher melanoma rates than people of other races and men have higher rates than women. Sun exposure appears to play a role in melanoma, but it’s complicated…

Here’s a puzzler: Melanomas usually appear on parts of the body that don’t get daily sun exposure. The most common site for men is the upper back. For women it’s the lower legs.

Studies are also confusing
Some studies suggest that sunscreens protect against melanoma like a  2011 study showing that sun-savvy Australians reduced their risk of melanoma with daily use of SPF 15 sunscreen, wearing hats, and avoiding the sun in other ways (Green 2011), but there’s no way to tell what helped the most… Maybe it was just the hats?

On the flip side, other studies suggest that sunscreen users have an increased risk of melanoma (Gorham 2007). A number of studies conducted in the 90’s reported higher incidence of melanoma among frequent sunscreen users (Autier 1998, Beitner 1990, Westerdahl 2000, Wolf 1998).

One factor could be the widespread use of retinyl palmitate in sunscreen. This form of vitamin A, has actually been linked to skin cancer in FDA-sponsored laboratory studies.

Perhaps baking chemical sunscreens into your skin isn’t such a good idea after all…

Of course the natural health community has been saying this for years. So yes, sunscreens may actually be contributing to (or causing) skin cancer more than the sun itself, especially the sunscreens that are loaded with toxic chemicals. This is why it’s important that you use clean, safe, non-toxic sunscreens.

The sun is the source of all life on earth. It’s not something to be afraid of.
There are several factors that suggest that regular sun exposure is not as harmful as intermittent high intensity sunlight (i.e. beach frying 1-2 times a year).

Outdoor workers report lower rates of melanoma than indoor workers (Radespiel-Troger 2009). Melanoma rates are higher among people who live in northern American cities with less year-round UV intensity than among residents of sunnier cities (Planta 2011). Researchers think this might be because people with regular sun exposure have higher vitamin D levels which may in turn reduce melanoma risk (Godar 2011, Newton-Bishop 2011, Field 2011). The consensus among skin cancer researchers is that the most important step people can take to reduce their melanoma risk is to avoid sunburn, but not all sun exposure (Planta 2011). Regular sun exposure is good because it creates vitamin D in the body.

How Vitamin D happens
UV-B rays from the sun convert a form of cholesterol in your skin into a precursor for vitamin D. From there it is processed by your liver and  kidneys into the vitamin D that your body can use.

Just 10 minutes of midday summer sun on a person wearing a tanktop and shorts can create as much as 10,000 IU of vitamin D in the body. Vitamin D is one of the most powerful, health-promoting, anti-cancer vitamins known. That’s why getting daily sunshine is so vital to health. When at the beach, I make it a point to get 10-20 minutes of sun before putting on sunscreen.

It is nearly impossible to get vitamin D from the sun during winter months, which may be one reason why some many people get sick in the winter. And even in the summer I don’t get as much sunshine as I’d like to. So my family supplements vitamin D3 year round.

Read my post on supplementing with vitamin D here

I have an olive complexion. My skin tans easily and hey, I like to be little tan. But unfortunately the downside of tanning is premature skin aging. I know several girls (you do too) who were tan year round in high school and college. They looked good then, but once they hit their late twenties and early thirties they started looking pretty rough, especially in their faces. They looked much older than they actually were with leathery, wrinkled splotchy skin. Picture the marlboro man in a skirt. So as much as I like to be tan, I would rather be a little pale and youthful than tan and old. I also hate being sunburned. As you know it is a miserable experience. So I take extra precaution to avoid that.

Don’t depend on sunscreen to protect you
People who rely on sunscreens tend to burn, and burns are linked to cancer. Stanford University dermatologists reviewing CDC data concluded that people who relied solely on sunscreens for sun protection had more sunburns than people who reported infrequent sunscreen use but wore hats and clothing to shield themselves from the sun (Linos 2011). In Sweden, increased use of sunscreen was linked to a higher number of sunburns in children (Rodvall 2010). Several other studies of real world sunscreen use find that people who use sunscreen for skin protection during periods of intense UV-exposure still end up with more sunburns (Koster 2010, Autier 2007).

Basically we put too much faith in sunscreen, and sunscreen products are not as good as everyone thinks they are. They do not fully protect your skin from all types of UV damage. Sunscreens were invented to stop sunburn and they are commonly indexed by their SPF rating, which describes the product’s ability to prevent burning. High-energy UVB rays burn skin and directly damage skin DNA, but UVB rays only make up just 3-5 percent of the UV radiation striking Earth’s surface.

More numerous UVA rays, by contrast, can be equally damaging without leaving the painful reminder of blistered skin. Because UVA radiation penetrates deeper into the body than UVB, it can cause a different type of DNA damage than UVB (Cadet 2009).

For decades, sunscreen manufacturers and sunscreen users assumed that preventing or delaying sunburn would also avert other dangerous damage, such as skin cancer. And many sunscreens only blocked UVB rays. Today, many experts realize that both UVA and UVB exposure may contribute to melanoma risk (Donawho 1996, Garland 2003, Godar 2009, Setlow 1993).

When people use sunscreen properly to prevent sunburn, it gives them a false sense of security and they often spend more time in the sun. They may prevent burns, but still end up with more cumulative exposure to UVA rays, which can inflict more subtle and serious damage (Autier 2009, Lautenschlager 2007). Good sunscreens give a similar level of UVB and UVA protection.

What can I do to reduce my risk of getting skin cancer?

In light of the shortcomings of today’s sunscreens, the Environmental Working Group suggests that you adjust your attitude about sun exposure.

  • Do not use sunscreen as a tool to prolong your time in the sun.
  • Cover up! Hats, shirts and sunglasses are the best protection.
  • Avoid sunburn!
  • Do not use a tanning bed or let yourself fry in the sun.
  • Protect kids! Early life sunburns are worse, so keep little ones out of the hot sun.
  • Pick a non-toxic sunscreen with strong UVA protection.
  • Get vitamin D.  There is speculation but not proof that adequate levels of vitamin D can reduce the risk of melanoma. But we know that vitamin D is good for combatting other types of cancer. Commit to getting screened for vitamin D deficiency.
  • Examine your skin. Check your skin regularly for new moles that are tender or growing.
  • Eat fresh whole organic foods from the earth. Fruits and vegetables nourish and protect every cell in your body!

Sunscreen Tips:

No sprays. Given the ease of applying them to squirming kids and hard-to-reach areas, these super-popular spray sunscreens may seem like a dream come true. But they may pose serious inhalation risks and may not fully cover skin.

No super-high SPFs (above 50+). Skin products with high SPF values provide little additional skin protection and may contribute to consumer misperception and misuse.

No vitamin A (retinyl palmitate). Vitamin A is touted for its anti-aging effects on skin. But retinyl palmitate, a form of vitamin A added to almost 1 in 4 SPF-rated sunscreens, makeups and moisturizers, could speed development of tumors and lesions on sun-exposed skin, according to a government study.

No oxybenzone. Commonly used in sunscreens, oxybenzone penetrates the skin, gets into the bloodstream and acts like estrogen in the body. It can trigger allergic reactions. Data is preliminary, but studies have found links between oxybenzone and health harms. Nearly half of all beach and sport sunscreens contain oxybenzone.

In 2011, I heard Elizabeth Plourde PhD speak about the dangers sunscreens pose to humans and the environment. You can learn more about his in her book Sunscreens – Biohazard: Treat as Hazardous Waste.

Every year the Environmental Working Group rates the safety of sunscreens on the market on a scale of 0-10, 0 being the lowest hazard. 2/3 of the score is based on UV protection. 1/3 is based on the toxicity of the ingredients.

Note: Clean non-toxic sunscreens all contain either titanium dioxide or zinc oxide, or both. They’re the safest option you’ve got, if you are going to wear sunscreen.

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Annmarie Skincare Sun Love is what I use on my face. It uses a transparent zinc oxide, plus antioxidant herbs and oils including aloe vera, green tea, rosemary and lavender. And it’s tinted so it doesn’t leave your face all white and pastey. This product hasn’t made it into the EWG database yet, but considering the source and the ingredients, I’m confident it is super clean.

 

Aubrey Organics Natural Sun SPF 30 is what I use on my body. It has an Environmental Working Group safety score of 1, which is the best score of any sunscreen on their site. And it has a 4 star rating on amazon with over 100 reviews. And it is priced better than many other natural sunscreens at $4.50 per oz.

 

 

 

Kiss My Face Kids Sun Stick SPF 30 is another good one

Badger Sunscreens also scored really well on EWG and with amazon reviewers

Pro tips:
Astaxanthin is a carotenoid antioxidant derived from red algae that has been shown to help protect your skin from oxidative and UV damage through its suppression of NF-kB activation, which can lead to uncontrolled cell reproduction (i.e. cancer). It’s a good idea to start taking it a few weeks before you hit the beach. Also make sure you take one that is derived naturally from algae, not from petroleum. The brand I like is Nutrex BioAstin Hawaiian Astaxanthin.

Load up on berries. Berries are loaded with antioxidants that combat free radical damage caused by too much sun. Make a fruit smoothie for breakfast every day before you hit the beach.

Wear a rash guard, it’s like a surf shirt with an SPF of 50. They’re great because they completely block your skin from the sun and they keep you cool when wet.

Speaking of cool, these look way cooler than wearing some big dumb t-shirt at the beach. Whether you are trying to avoid a sunburn, embarrassed about your body, or you’re just modest, switch to a rash guard and cover up in style.

My wife Micah damaged her skin laying out too much in junior high and high school, and is very conscientious about sun exposure. She discovered rash guards a few years ago, bought one, and loved it. Then I bought one. It has been an invaluable beach asset. I often put it on during the hottest part of a long beach day or if I’m spending a lot of time playing in the water with my kids.

They come in short sleeve, long sleeve, tight or loose fitting for all ages and body types. Here are a few examples.

       


      

Price rash guards here

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I've interviewed over 50 people who've healed all types and stages of cancer. Check them out here. Or use the search bar to find survivors of specific cancer types.

I also created a coaching program for cancer patients, caregivers and anyone who is serious about prevention called SQUARE ONE. It contains the step-by-step strategies used by myself and everyone I know who has healed cancer.

Watch SQUARE ONE Module 1 for free here

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