Good and not-so-good news about summer sun

Good and not-so-good news about summer sun

As a kid, I longed for the warm, lazy days of summer starting sometime in January (right after Christmas). I loved the feel of sun on my face and my bare feet in the grass.

I still love the feel of the sun on my face and my feet in the grass. Although these days, I make sure I have my sunscreen on.

Do you feel the same? Or do you worry about photo aging and the damaging effects of that sun on your face and avoid it as much as possible?

It seems like when it comes to sun and skin, there are two camps. The worshippers and the avoiders.  I think both camps have valid points.

But there’s a middle ground that brings together the best of both.

It’s complicated. The sun is essential for life and health, yet it also can age you before your time and damage your DNA and cause skin cancer.

How the sun is good for you

The sun is vital for life on earth. Every form of life depends on it, even if it’s indirectly.

Ancient cultures revered the sun. The sun’s yearly cycles are the basis of many ancient and modern holidays.

Science is only beginning to understand the effect of sunlight on human health. What researchers have learned is fascinating. And complex.

The sun’s light has a profound positive effect on your mental health. Sleep cycles, mood, and vitamin D production are all related to sun exposure.

Sunlight has a profound effect on hormones in your body. Serotonin, melatonin, cortisol are linked to sunlight exposure.

Bottom line: there’s a strong scientific reason you feel good after being outdoors in the sunshine.

Sunlight and Mood

Sunlight lifts your mood, which is something we all could use a little more of. There are a couple of reasons for this:

-Exposure to sunlight stimulates our “feel good” endorphins. Endorphins are natural pain and stress fighters. They’re responsible for the feeling known as a “runners high” 

-Sunlight causes special receptors on the retinas of your eye to signal the brain to release serotonin. Serotonin lifts mood and helps create calm focus.  A lack of serotonin is linked to depression, seasonal affective disorder, and anxiety/panic attacks.

-Sunlight also helps with sleep (one of the foundations of health and beauty), sunlight exposure during the day stimulates the melatonin production at night that helps you sleep well. Good sleep is critical for good health, mood, and skin.

You can take of advantage of sun light’s effect on your sleep by getting outside in the sun or natural light (if it’s cloudy) right after you wake up in the morning. Five to ten minutes of sun/natural light in the morning will help you have a better night’s sleep. Try it for a week and see.

Sunlight and Your Immune System

Sunlight boosts your immune system, something just about everyone is concerned with right now.

Georgetown University Medical Center researchers have found that sunlight energizes T cells that play a central role in human immunity. Natural short wavelength blue light from the sun speed up the response of T cells that fight infection.

Sunlight also affects your immune system by regulating melatonin and cortisol release, reducing stress and producing vitamin D.

Vitamin D is responsible for bone health, immune response, and other possible benefits. Vitamin D is such an important vitamin for your health. I’m going to write a separate blog on how sun starts the whole process of making vitamin D.

(Spoiler alert: sunscreen does NOT keep your body from making vitamin D like you’d think. So keep wearing it daily.)

Sunlight and skin health

Yes, skin cancer and photo aging are big concerns.

But, it turns out, with sunscreen and moderation the sun can be your skin’s friend.

Moderate sun exposure improves certain skin conditions:

  • Acne
  • Psoriasis
  • Eczema

 Other Possible Benefits of Sun

Being outside in nature is one of the best tonics for overall health that there is.

Just like whole foods are generally more beneficial than the sum of their “active ingredients”, I’m betting that there are many more benefits to being outdoors in the sun.

The Australian Cancer Council agrees:

"It should be noted that the benefits of sun exposure may extend beyond the production of vitamin D. Other possible beneficial effects of sun exposure… include reduction in blood pressure, suppression of autoimmune disease, and improvements in mood.”

The Avoiders are right too

There’s no arguing that too much unprotected time in the sun and you’re courting collagen breakdown and sagging, wrinkles and fine lines, hyperpigmentation, and rough spots.

Sun damage accounts for 90% of the visible signs of aging.

Then there’s skin cancer. Too much sun exposure is definitely a factor. UV rays can cause free radicals to form and damage DNA in your skin cells. Over time, skin cancer can result.

And skin cancer rates are on the rise.

However, not all skin cancers are deadly

There are several types of skin cancer. Basal cell and Squamous cell carcinomas are the most common types (accounting for 97%+ of new skin cancers).

These cancers need to be removed, but they are very rarely life threatening. They’re linked to too much sun exposure over the course of time.

The deadly form of skin cancer is melanoma. Melanomas account for 1% of new skin cancers a year, but the vast majority of deaths. Researchers believe that 86% of melanomas are caused by sun damage.

So yeah, it’s a big deal.

Here’s the thing. The recipe for melanoma seems to be a bit different from the other skin cancers. Melanomas seem to be caused by little sun exposure in general and intermittent instances of massive sun exposure that cause a severe sun burn.

A person who works indoors all of the time who goes on vacation at the beach and gets fried on the first day seems to be far more at risk than a person who is exposed to the sun daily. 

Obviously, it’s important to avoid sunburns and too much exposure, but it’s also pretty clear that we all need some sun too. 

Can we meet in the middle?

The American Academy of Dermatologists says that the risk of skin cancer is great enough that you should always take precautions against the sun.

But, there are many researchers that believe the benefits of sun exposure to overall health are important not to miss out on. They call for “moderate” sun exposure.

Obviously, no one thinks that getting a sun burn is a good idea but opinions vary on what this balance actually is. In truth, there’s no formula for the right amount of sun exposure to get the benefits without risking too much damage.

So you need to decide for yourself.

I cannot give you medical advice. But I can give you my opinion. 

I’m a big advocate for using sunscreen, especially on your face,neck, and hands since they’re the areas that get almost constant sun exposure. They’re also the areas that we see the most. And the area most of us think about when we worry about our appearance and, as we get older, the health of our skin.

Since we now know that 90% of the visible signs of skin aging are due to damage from the UV rays of the sun. Using sunscreen on your face, neck, and hands makes sense. 

As for the rest of your skin, Micheal Holick PhD takes an approach that seems right.

 He’s the head of the  Vitamin D Research Lab at Boston University and author of the book The UV Advantage. He recommends “sensible sun exposure”. 5-10 minutes of direct sun exposure to unprotected arms and legs 2-3 times a week.

This amount of exposure is enough to support vitamin D synthesis without courting chronic UV overexposure.

Your body only makes the amount of Vitamin D it needs so there’s no advantage to getting more sun in an effort to make more vitamin D or to make some extra “to save”. It just doesn’t work like that.

 If you’re going to be outside longer, then apply sunscreen or cover up.

Being outdoors is too good for you and too much fun to avoid.

 Sunscreen, hats, clothing and common sense are the best ingredients for balancing the good things that the sun and outdoors have to offer and protecting yourself from damage.

To keep your skin healthy and looking its best, use your sunscreen and SPF lip protection,  and apply Vitamin C serum, and antioxidant moisturizer in the morning to help provide extra protection against free radicals.


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