Experiment for yourself. My results to date have taken me beyond what medical science can do in some cases.
Assumption: the food supply is shit, modified to look good, last on the shelves, enhance profits, etc, at the cost of nutrition
Method: find out what's missing from the food supply, what's bad that's in it, and supplement /avoid as needed
I took Omega 3 and depression went away, allergies went away, I'm good to go
I took Phosphatidylserine and brain function became much better after only a few days. Writing software went from pure torture to pleasure.
I took Hyaluronic Acid and my shoulder bursitis pain went from 8 on a 10 scale to 2... I told the doctor about that and the piece of shit said "if you cured bursitis with a supplement then it was not diagnosed properly in the first place"
I took a very high quality multivitamin and my liver function got better
I took psyllium husk fiber and my digestion got far better
I got into nootropics and took Piracetam and my brain hemispheres started communicating much better, making plans and implementing them became much easier, my dreams became vivid beyond anything I can recall since childhood.. I took Selegiline and raised my hgh levels to that of a teenager and learned that I can recover from injury and exercise much faster...
I stopped eating anything with sugar or preservatives and my immune system got better as evidenced by lack of suffering during cold and flu season...
I experimented with colloidal silver, leaned to snort it, eye-drop it, ear-dro it, nebulize it, swish it and ingest it... infection and inflammation are greatly reduced as evidenced by certain pains that I no longer have.
There is a lot more that I've done, I investigated the idea that our bodies are partly made of subtle energies, learned to breathe in energy, to control it's flow, to use it's strength in a few ways, Tai Chi, Pilates, and Yoga are great for that, I found martial arts to just foster violence and avoid that stuff like a plague, besides Tai Chi is the best martial art and doesn't involve violent thoughts...
I learned that lies from the devil give him partial control of my life via our flesh and shut down our ability to hear from God. I learned to root out those lies, confess believing them as sin, put that sin on the cross with Jesus and let Him take care of it, to tell the devil he has no more legal right to my flesh and to send him away permanently.. That is one big key to health...
There is a lot more I've done, it's based on "do your own due diligence" style of thinking....