Did you know, that only one-third of the energy our bodies produce comes from the food we eat? [According to physician and photo biologist Alexander Wunsch].

So as humans, where else do we obtain our energy?


Our bodies absorb light and turn it into energy. The body is powered by food, oxygen AND light.

In his book, “The Ultimate Guide to Red Light Therapy,” Ari Whitten writes:

Most of us are completely unaware that light has a profound impact on our health. Just as human cells need nutrients from food, light is also a necessary nutrient for our cells to function. Certain wavelengths of light can help power up our cells, affect hormones and neurotransmitters, enhance physical performance, hasten recovery from stress, increase alertness, improve sleep, and positively affect the expression of our genes.

In short?

The human body needs sunlight to be healthy.

All life on our beautiful planet is powered by the sun’s energy. Life exists because the sun exists! Light and life are inseparable. All biological life is composed of and dependent on light, and this includes each and every one of us.

Benefits of Sunlight:

1) Immune Boost
Regular sunlight exposure strengthens our immune system; making us less susceptible to disease and increasing our ability to fight off infection.

In his book, “Heal Yourself with Sunlight,” Andreas Moritz writes:  

It’s powerful immune stimulating effect makes sunlight one of the most important "disease-inhibitors". Regular exposure of our body to the germicidal wavelength of ultraviolet light (UV) of the sun successfully controls germs, mites, molds, bacteria and viruses.

2) Increased Serotonin Levels
Exposure to sunlight triggers the release of various hormones in your brain, including serotonin. Serotonin is associated with boosting mood and helping a person feel calm. Serotonin also plays an important role in improving focus, learning and memory. With regular sunlight exposure, we think better and we feel happier! This is why many people experience Seasonal Affective Disorder (SAD) – a type of depression in the colder, winter months when sunlight is limited. Did you notice that you feel happier in the summer time? There’s scientific reason behind this!

3) Enhanced Energy
Sunlight powers our mitochondria to produce ATP more efficiently; ATP is the cellular energy which drives all bodily processes, from breathing, to thinking, to digesting. As we receive more sunlight, our levels of ATP production increase, meaning more energy for living and doing the things you love!

4) More Vitamin D and Bioavailability of Oxygen

Additionally, our bodies use sunshine to make vitamin D – without which we cannot survive. More vitamin D brings better calcium absorption, thereby strengthening our bones. Vitamin D also plays a key role in mineral metabolism – which allows us to get more nutrition from the food we eat.

Sunlight therapy can also help with conditions like anemia, as sunlight increases the ability of the blood to absorb and carry oxygen.


Sunlight is essential for optimal health and well-being.  

Written by Alex Marynczak from Envol team


  1. "The Ultimate Guide to Red Light Therapy", Ari Whitten. July 9, 2018.
  2. "Heal Yourself with Sunlight", Andreas Moritz. April 1, 2010.