The sun:
improves blood flow to the scalp (https://www.nature.com/articles/s41598-022-13399-4)
produces infrared rays that penetrate the scalp, stimulating the release of nitric oxide
acts as a vasodilator (increased blood flow to the scalp) https://pmc.ncbi.nlm.nih.gov/articles/PMC5356216/
Grounding:
reduces inflammation https://pmc.ncbi.nlm.nih.gov/articles/PMC4378297/
reduces ROS + increased mitochondrial function https://febs.onlinelibrary.wiley.com/doi/full/10.1002/2211-5463.70062
Improves blood pressure (helps blood flow to the scalp) https://thoracickey.com/grounding-and-the-cardiovascular-system/
Neutralizes free radicals https://pubmed.ncbi.nlm.nih.gov/18047442/
Bottom Line:
There are numerous mechanisms by which grounding to the earth and getting sun exposure can help lower systemic inflammation, improve blood flow to the scalp, and upregulate antioxidant levels to assist in defending against heavy metals.
Simply: Eat the diet I suggest for curing hair loss, which consists of raw meat, raw butter, and raw royal jelly in 1 meal per day outside in the sunlight while grounding.
This will give you the best chance at reversing this unnatural disorder.