Why SUNLIGHT is important when you have Cancer
- Daphne M.
- Mar 19
- 2 min read

Many people recovering from cancer focus on diet, rest, and stress management which are essential elements of healing..
..But what if the answer to accelerating recovery and improving your energy was something simple, completely free, and very often overlooked?
And that's sunlight. It plays a very important role.
Why sunlight matters:
1. It wakes up your immune system.
Cancer treatments can weaken your immune system, making you feel exhausted, like after an all-nighter.
Chemotherapy, radiation, and even surgery can reduce T-cell activity, which means your body has a harder time fighting off infections and staying resilient.
Sunlight helps jumpstart those T-cells, making them more active and efficient at defending your body.
Exposure to UVB rays also triggers the production of vitamin D, which is very important in regulating the immune system and reducing inflammation—both crucial for recovery.
2. It gives you real energy.
Not the kind from coffee.
Sunlight literally charges up your mitochondria which are the tiny power plants inside your cells that produce energy (ATP).
When you get natural light, especially in the morning, it helps your mitochondria work more efficiently, meaning your body creates more real, lasting energy instead of relying on caffeine or sheer willpower.
So instead of running on empty by noon, your body actually holds onto real, lasting energy—helping you rebuild strength without the constant crashes.
3. It helps fix sleep and hormones.
If your sleep schedule isn't the best, morning sunlight can help reset your circadian rhythm, which is your body’s natural sleep-wake cycle.
Exposure to sunlight in the morning signals to your brain that it’s time to be awake, which helps regulate melatonin production later, and that makes it easier to fall asleep at night.
This also helps balance hormones that affect everything from mood to appetite.
4. It boosts your mood.
The sun naturally increases serotonin and endorphins, aka nature’s antidepressants. That means less anxiety, and a better mood overall.
If post-treatment anxiety or low energy has been a struggle, this can really be incredibly helpful.
And here's 4 more things to know..
Morning is best. Get as much sun exposure as possible before noon for maximum benefits.
More skin means more sun absorption. Expose your arms, legs, chest and back for better results than just your face and hands.
Avoid wearing sunglasses when you can so that your eyes can send the right signals to your brain.
Skip the sunscreen during low exposure risk and only apply a natural one during high exposure risk (or prefer clothes that will cover you). A bit of unprotected exposure lets your body soak up the natural sunlight it needs to produce vitamin D!
Sunlight is free, it’s easy to get, and it comes with zero side effects! :)
Try it for a few days and see how you feel.
If you have any questions or thoughts, send me a message, I always love to hear from you!
Sending you love,
-Daphne
Comments