The thesis is actually very simple and as first principled as possible:

1. All life on earth always lived in close proximity to it's environment.

2. As humans separate themselves from their environment, which is very rapidly in the last hundred years, they disrupt their bodies natural processes, their cells loose energy, which results in disease.

3. Therefore, if you want to heal, spend more time in nature.

What's to be proven about that? It can't get any clearer ... Biohacks, and red light therapy specifically, is just trying to replicate nature's environment so that you can keep living separated from nature, yet not suffer as much.

BTW, if you think you can improve your health/vitality long term with chemically based biohacks, you are playing with fire.

Would you please share the "people that understand" biology? I would be super interested to read what they are saying.