Hi! Can you elaborate about collagen supplementation?
Just work it into your daily meals. It's very important to get broad aminos into your diet, like glycine, which is abundant in a scoop of a good collagen powder. It's a powerful systemic anti-inflammatory. Moderate protein with collagen supp (or cooking with bones all the time) plus subsisting on mostly carbs is optimal for hair growth. The hair follicle can't really grow with fat metabolism, it needs glucose metabolism. The typical diet is too high in muscle meat and probably too high in fat. If starch or bread or rice or potatoes cause serious reactions, focus on fruit and juice and sugared coffee. I've noticed these kind of paleo-ish eaters who deadlift and look nice, like Tim Ferriss, are always bald. I see those kinds of guys at the gym. 38 years old, white, well off middle class, decent muscle, probably crossfit-adjacent lifting, probably owns a juicer, eats avocados and sweet potatoes. A lot of the nutrition is correct, but raw vegetables — especially crucifers — are terrible for thyroid functioning, which, along with a lot of fat in the blood, is a good way to lose your hair.
My age-related baldness first became a problem to address during the time in which I adopted low carb, high protein/fat eating.
There's a good playlist here on baldness research.
I also don't see how androgens are the root cause. Pattern baldness very obviously correlates with androgen levels on the inverse — as your androgens linearly decline from 16 to 60, your hair follicles decline linearly. It's daft to even call it 'androgenic alopecia' or 'androgenetic' (I see both, so don't know which one it officially is). Just because DHT blockers locally halt hair loss in a modest degree doesn't make that name legitimate. Therefore I simply call it pattern baldness. There is no correlation between basal androgen levels and hairloss, nothing 'masculine' about being bald (except it's distinctively male in an aesthetic and superficial sense), and nothing is 'lacking' in balding guys either, as far as masculinity, androgen levels, toughness, or anything like that. It's not 'androgenic alopecia.' That is totally stupid and incorrect.