How the Sun Makes You Feel Better

After a long winter in the Northeast, the first glimpse of summer sun can be a tonic — especially for self-identified sun worshippers. But even if that’s never been your thing, in small doses, the sun, can still have positive health effects on your mind and body.

From sleeping well to better moods and more energy, these are some of the ways sunlight does us good.

The Sun and Our Bodies

To understand why the sun makes us happier, there are a few factors that make the largest contributions: vitamin D, serotonin and, of course, moderation.

Vitamin D is an important mineral for our health, and sunlight is the most efficient way for us to receive it. While we can absorb it from some foods like oily fish and eggs, the amount is very small compared to sunlight. In fact, more than 90% of our vitamin D comes from sunlight, per the Cleveland Clinic.

Five to 30 minutes of sun exposure most days of the week is optimal for our bodies to absorb the ultraviolet-B (UVB) rays needed to make vitamin D, according to a study published by the National Library of Medicine. When our skin absorbs UVB rays, it triggers the conversion of a molecule in the skin into vitamin D.

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Having enough vitamin D has been associated with strong bones, a healthy immune system, cardiovascular health and good muscle function. It also contributes to the production of serotonin, the body’s “happy hormone.” Without enough sunlight, serotonin levels can dip, potentially increasing the likeliness of major depression with seasonal pattern (formerly known as seasonal affective disorder or SAD).

Sunlight plays a role in regulating our sleep cycle, as well. How does more sunlight make you sleep better, you may ask. Well, it has to do with humans’ circadian rhythm, or internal clock. When our eyes are exposed to enough natural sunlight, it signals our brains to stop producing melatonin, a hormone that helps us get to sleep. The more sunlight you get during the day, the more melatonin you produce at night. This, in turn, ensures that you’re well-rested and more alert during the day. Who needs coffee anyway?

Be Sun Safe

Sunlight keeps our bodies and minds happy, but it’s important to remember that moderation is key.

Because the sun emits UV radiation that can penetrate the skin and lead to skin cancer, the risks are high when it comes to improper exposure. Before going out in the sun, consider your location, skin tone, season and the time of day. If you plan to be outside in the sun for more than 30 minutes, apply sunscreen with at least 50 SPF and have a protective hat, shirt and pants just in case.

Do you feel happier when the sun is out? Tell us in the comments.

This article is for information purposes only and should not be construed as advice. Speak with a doctor or qualified health professional if you have questions about your health, wellness or lifestyle changes.

Sarah Vincelette

Based in Rhode Island, Sarah has been a copywriter and content producer with AAA Northeast since 2021. When she’s not scouring the best spots for all things food and drink or whipping up her own versions of tasty meals, you can often find her in the garden, planning her next trip or sipping on (another) hot coffee.