Nutrition: traditional foods with limited chemicals ("Eat like your grandparents ate."); beef (sometimes supplemented with a little collagen powder), eggs, chicken, shrimp, liver (mainly in liverwurst form these days), occasionally oysters, fruit, potatoes, rice, pasta, milk, coffee, salt, sugar, things like that. I prefer saturated fat over unsaturated fats, using coconut oil and butter typically. If I can't avoid unsaturated fats, I go with EVOO. I avoid added iron, I avoid any foods with a large amount of chemicals, and I shoot for natural products as much as possible (eg, ice cream: Haagen-Dasz or Turkey Hill Natural). I take a reasonably good multivitamin when I remember to (Garden of Life--Vitamin Code for Men).

One of the most helpful things I did to address overall health with nutrition was to go through a nutrition course with Josh Rubin of EastWest Healing (this was back in 2015). He laid the foundation for a roughly Peat-based nutrition protocol, and was a helpful support for the very difficult emotional side of having poor health, which I also needed at the time.

Grounding: I sleep grounded (grounding pillowcase), and I have grounding wires (copper) set up under my desk and in front of my couch to stay grounded while in those places (there's a less ghetto way to do it than with wires, but the grounding pads can be expensive). Grounding draws in electromagnetic energy from the ground (negative ions, maybe?) that allegedly has all kinds of benefits, including reduction of inflammation (see Earthing, by Clint Ober).

Sunlight: I get a reasonable amount of sunlight per day, sometimes from working outside, sometimes walks or tennis, or a combination. At a time when I could not stop my hair loss by other means, when I began going for walks again with no hat, my hair loss immediately stopped. I prefer indirect sunlight, and I notice that my hair, skin, and beard all look best after coming in from a few hours of indirect sunlight. It could be the Vit D that is produced by the sun, or it could be the electromagnetic nature of sunlight, possibly absorbed by the hair follicles and thus transferring healthful EM energy to the follicles. Either way, one of the things I would recommend most.

Stress: Stress avoidance is key for maintaining a healthy metabolic state, for overall health and head/hair health. I try to avoid stress as much as possible: physical, psychological, emotional. Physical stress: I notice hair falling out more if I over-exercise (play tennis too long or too hard, go jogging, lift weights too heavily, etc.). Emotional and psychological stress can also put you into the fat-burning metabolism that produces less energy than the healthy glucose-burning metabolism. I also use techniques from the book Relax and Win, by Bud Winter (Olympic track coach brought in by the military to create a relaxation program for WWII fighter pilots). I specifically do this briefly before bed, and have noticed a difference in how I feel when I wake up. Winter recommends thrice daily, and says results at the military academy where they tested his methods were very positive.

EMFs: I avoid electromagnetic frequencies as much as I can. You can check to see if you are in range of any EMF towers on antennasearch.com. 1200 feet away is supposed to be the healthy distance, but I don't have a source for that; I am further than that from any towers, anyway. You can block external EMFs with EMF-blocking house paint, although I haven't had need of doing that. Grounding (as mentioned above) supposedly protects you from EMF radiation, so I do that as much as I can. I use air headphones for talking on the phone, to keep the phone away from my head (assuming that EMF radiation to the scalp facilitates hair loss). I use a pair from Defender Shield. I swept my apartment for sources of EMF radiation (appliances, lamps, anything wired, in-wall home wiring, etc.), and I moved my bed/desk/couch etc. as far as I reasonably could from those sources. I use the Trifield TF-2 EMF reader. You can use a wi-fi router cover to block EMFs, or move the router as far from your body as you can. My assumption with artificial EMFs is that they are harmful to the body and the scalp/hair, and therefore want to avoid and/or block them as much as possible.

Filtration: I filter my drinking water with a standard water filter, and I sometimes run an air filter. Any toxins that can be removed from the water or air might help overall health and therefore hair health, or at least can't hurt.

Medicine: I avoid medical interventions such as vaccines, anti-biotics, X-rays, and pharmaceutical products.

Fabrics: There is a theory that natural fabrics are better for the body than synthetic ones, because of how they react electronically with your body's bio-electrical system. I wear mainly 100% cotton clothes, as much as I can find them. If I wear a hat, it has to be 100% cotton. Wool, silk, and linen are also good, although I don't have those. I have 100% cotton sheets and a cotton blanket. I can feel the difference when I am wearing something synthetic like polyester. The idea here is that overall biological health (and therefore scalp health) is affected by the electrical relationship between your body and fabrics.

Circadian rhythm: I try to keep a fairly consistent sleep-wake schedule, so that the hormone production cycle/circadian rhythm doesn't get out of wack.

Inclined Bed Therapy: This one might seem strange, but I keep my bed inclined at almost a 5-degree angle (not split in half like a hospital bed, but with 2x4s place under the head of the bed frame so the whole bed angles up). The theory is that gravity assists in blood circulation: breathing out removes moisture from the blood in your lungs, and therefore the blood in your lungs becomes slightly more dense than the rest of your blood; denser things are drawn down, and if you apply the principle "for every action there is an equal and opposite reaction," this means that the less dense blood in your veins will be drawn up, entering the lungs, where it also subsequently loses moisture and becomes more dense, etc.--cycle cycle cycle. (The point here is that gravity does not provide this assistance if you are lying horizontally.) I have noticed warmer feet since starting this several years ago, and thus I believe it is improving circulation. Since everything that heals flows through the blood, improved circulation should improve essentially all body functions. I would recommend starting at 2-3" inches of rise before you get up to the full 6", because that feels weird at first. Feels better on back or stomach, not ideal with side sleeping, although I do all 3.

Face yoga: Exercises for face can relax and improve blood flow to the face and head. Blood flow = healing. See Danielle Collins' work (face yoga teacher, not the tennis player)

Flexibility: If I can't maintain all these things all the time, I don't sweat it. I try to remain relaxed about a protocol, or the protocol itself becomes stressful. So I compromise at times. But I notice that, if I let myself go too far (don't eat enough, exercise too much, don't sleep enough), the scalp feels weak and more hair comes out in the comb.

Anyway, that's my experience. Hope it can be helpful to people.