3578: The Truth About Sun Exposure by Melani Schweder of A Brighter Wild on Benefits Of Sunlight
Optimal Finance DailyMay 31, 2026
3578
00:11:22

3578: The Truth About Sun Exposure by Melani Schweder of A Brighter Wild on Benefits Of Sunlight

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Episode 3578:

Melani Schweder explores the surprising health benefits of moderate sun exposure and challenges the fear-driven messaging surrounding sunlight and sunscreen. By explaining the vital role Vitamin D plays in immunity, mood, bone strength, and overall wellness, she encourages readers to rethink their relationship with the sun and embrace more intentional time outdoors.

Read along with the original article(s) here: https://www.abrighterwild.com/blog/the-truth-about-sun-exposure

Quotes to ponder:

"Our bodies are designed for some sun exposure on a daily basis, even if it’s just for 10-15 minutes."

"We just need to get over the fear that the sun is dangerous!"

"And did you know that, in only 30 minutes of sunshine on an average summer day, your body can manufacture over 10,000 IU of Vitamin D?"

Episode references:

Vitamin D and Immune Function – Harvard T.H. Chan School of Public Health: https://nutritionsource.hsph.harvard.edu/vitamin-d/

Skin Cancer Foundation – Sun Protection and Vitamin D: https://www.skincancer.org/blog/sun-protection-and-vitamin-d/

Mayo Clinic – Vitamin D Deficiency: https://www.mayoclinic.org/diseases-conditions/vitamin-d-deficiency/symptoms-causes/syc-20363792

Grounding (Earthing) Research Overview: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3265077/

Vitamin D – National Institutes of Health: https://ods.od.nih.gov/factsheets/VitaminD-Consumer/

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[00:00:52] Welcome back to another bonus Sunday episode. This is where we get to hear from one of the other shows in our podcast network. And today's comes from Optimal Health Daily. You can find that show wherever you're listening to this. And with that, here's Dr. Neil with the post and his commentary as we optimize your life. The Truth About Sun Exposure by Melanie Schwader of ABrighterWild.com

[00:01:20] Most of us have been raised with the notion that sun exposure is dangerous and that we must do whatever we can to protect ourselves from its harmful rays. We buy the highest SPF sunscreen, don wide brim hats and extra dark sunglasses, and even shell out the big bucks for clothes that are UV proof. But how much benefit are we really getting from taking all of these measures? Cancer is a scary thing and certainly nothing to take lightly.

[00:01:45] Nearly 100,000 cases of skin cancer occur in the US each year and aggressive melanomas can be deadly. However, we have to think about how much of the marketing around sun protection is purely fear-based and how much we've been buying into the idea that the life-giving sun is actually a serious threat to our health. Americans are spending more time inside than ever before, and yet we are getting sick at the fastest rate we've ever seen in history. We can be pale and pasty, hidden away from the sun's rays,

[00:02:13] but are still diagnosed with a myriad of other diseases, especially those related to metabolic and immune dysfunctions. Some scientists are beginning to find correlations between the amount of sunny outdoor time and the rates of things like depression, heart disease, cancer, and colds and flus. Not surprisingly, those who went out into the sun more frequently were shown to be happier, more optimistic, caught fewer colds, took fewer sick days from work, and had a lower incidence of major disease.

[00:02:41] Now, you can draw many correlations from these kinds of studies, citing that if you think fresh air and exercise are playing a role in these sunbathers' health, you'd be right, they certainly are. But if you focus your lens on one particular compound, the pro-sun evidence becomes even more compelling. Vitamin D, which is actually more like a hormone than a vitamin, is something that our bodies cannot manufacture all by themselves. But it is something that is crucial for several major metabolic processes.

[00:03:08] You probably know that UV light is required for vitamin D production, which is why it's often dubbed the sunshine vitamin. So, what happens when you block UV rays from penetrating the skin, like when you wear sunscreen? Now your body can't make vitamin D. I'm certainly not advocating for everyone to throw out their sunscreen, but I think it's time for a serious readjustment of our expectations of what it can do for us. Several major studies conducted in the last decade

[00:03:34] have repeatedly failed to find a link between SPF usage and cases of skin cancer. But you'll never read that on a bottle of banana boat. And depending on the type of sunscreen you use, you may be at a greater risk for developing cancer from the ingredients themselves rather than any sun exposure. But I digress. As a society, we are suffering from a serious deficiency of vitamin D and our fear of the sun and lack of time in it is actually making us sicker.

[00:04:00] There are many amazing functions of this little wonder molecule we call vitamin D, but here are just a few of the major ones. One, this hormone acts as an escort to help shuttle calcium and phosphorus into our bones specifically. It also helps regulate levels of calcium in our blood, which is important for the functioning of all of our cells. Two, it helps out the immune system and improves immunological resilience by assisting white blood cell production and the recognition of self-cells,

[00:04:29] which may prevent autoimmune conditions. And three, it smooths out intercellular communication, which is needed for proper gene expression and protein synthesis or protein building. There are millions of vitamin D receptors on our cells in every corner of our body, and when there is not enough vitamin D to go around, physiological functions may weaken. Here are some symptoms of vitamin D deficiency. Unexplained depression. Tendency to catch colds. Slow wound healing. Brittle, weak, or achy bones.

[00:04:58] G.I. upset, or trouble-absorbing nutrients. Splotchy skin. Dark circles under the eyes. And unexplained weakness or fatigue. Even if you don't recognize any of these symptoms in yourself, there are certain risk factors that may make you more susceptible for a vitamin D deficiency. These can be clues to help you increase your sun time, or at least pay close attention to any health imbalances in the future. These would include, one, living in a highly polluted area. Two, chronic use of sunscreen.

[00:05:29] Three, spending a lot of time indoors or in a car. Four, living in areas with limited access to sunlight. For example, living near tall buildings. And five, working long hours in an indoor office. Our bodies are designed for some sun exposure on a daily basis, even if it's just for 10 to 15 minutes. If we expose just 20% of our skin to the sun for just 20 minutes, we can easily make all the vitamin D we need for the day. Pretty incredible, right?

[00:05:57] And did you know that in only 30 minutes of sunshine exposure on an average summer day, your body can manufacture over 10,000 international units, or IU, of vitamin D? That's 30 times what the average American gets in their daily diet. Even a primal-aligned diet can only reach about 1,000 international units in a day. So it's important to realize that no matter how clean your nutrition strategy is, your body still needs sun exposure to make the optimal amount of this crucial health-giving hormone.

[00:06:27] Plus, it's been shown that the vitamin D we make naturally through sunshine actually lasts longer on our cells when compared to the vitamin D we get through food and supplements. Pretty compelling pro-sun science, I'd say. We just need to get over the fear that the sun is dangerous. Granted, for people who live in the northern latitudes, or live in cloudy climates, or simply don't have much access to sunlight, it may be necessary to up your intake of vitamin D-rich foods, and consider taking supplemental D if your blood levels are low.

[00:06:56] Thankfully, there are foods that contain high amounts of vitamin D, including fresh wild-caught salmon, egg yolks, grass-fed beef liver, fortified dairy products or juices, and cod liver oil. Now, regardless of where you live and how you eat, I think it's time to change our conversation around sun exposure, especially when it comes to the importance of vitamin D to our health and vitality. You can supplement with it and eat foods rich in it, but nothing seems to be as efficient as sunshine. Primal wisdom recommends

[00:07:26] that you get just enough sun to maintain a slight tan year-round. When in doubt, it's recommended to expose larger parts of your body for shorter amounts of time, rather than smaller parts for longer durations. Because yes, too much sun on a small area, like your hands or your face, can cause damage over time. So, roll up those pant legs and sit out for 20 to 30 minutes every day whenever possible. Bonus points if you can stick your feet in the grass or sand and get some earthing benefits too.

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[00:09:27] Dr. Neil here for my commentary. Now there are some that may require more or less sun exposure and Melanie did allude to this. For example, those with darker skin may need more than 20 to 30 minutes of sun exposure each day. Those that are fair skinned may end up with a sunburn with just 15 minutes of sun exposure. So be careful. The key is to not allow yourself to burn. Sunburns are often associated with a higher risk of skin cancer. A great way to know how much sun you should be getting is to speak with

[00:09:57] a dermatologist. These are medical doctors that specialize in treating and preventing skin disorders like skin cancer. They can also help with hair and nail disorders. Dermatologists are very familiar with the connection between vitamin D and sun exposure and can provide you with more specific recommendations. Now because of my darker skin and the fact that I spend much of my day in my office or teaching in a classroom or in my car commuting I have found that I tend to run low on vitamin D. I found this out through a routine blood test.

[00:10:27] Now there has been some debate about the accuracy of blood tests for determining the body's vitamin D levels but most doctors are happy to use this method at least as a starting point. So talk to your doctor about this. If you're running on the lower side like me it may be worthwhile to supplement with vitamin D. That's what I've started doing. There are many safe supplements available. No matter the brand you want to buy the form of vitamin D called D3 and when you take the supplement do so with your largest meal of the day. That's because your body may end up absorbing

[00:10:56] 50% more when you take vitamin D3 with large meals. And according to one of my favorite websites consumerlab.com vitamin D3 drops from the brand Source Naturals is a great option. It meets both purity and quality standards. If you're not a fan of using drops or don't like the taste Sam's Club brand D3 soft gels are great too. Now I haven't mentioned anything about how much you should take. That's because that's a conversation you need to have with a healthcare professional.

[00:11:26] Alright that'll do it for today. I'll be back here tomorrow for a usual Friday Q&A so stay tuned for that where your optimal life awaits.