I'll just copy paste from an article:
Several studies have demonstrated that there is an association between local overproduction of active androgens and acne. Acne patients produced higher rates of testosterone and 5α-dihydrotestosterone (5α-DHT) in their skin than healthy individuals.
29 High testosterone levels have been implicated with enhanced sebaceous gland activity in humans
30,
31 and consequently with diseases marked by hyperseborrhea, such as Acne vulgaris. However, only a few patients with androgenic disorders exhibit hyperandrogenemia, an observation which indicates the predominance of peripheral tissue events for the occurrence of clinical signs.
32
Enhanced sebaceous gland activity is attributed to the potent androgen 5α-DHT
5 as sebaceous gland cells possess all necessary enzymes for conversion of testosterone to 5α-DHT.
33 The isozyme 5α-reductase type I, which catalyses the conversion from testosterone to 5α-DHT in peripheral tissues by a NADPH-dependent reaction is expressed predominantly in skin. It is present in the cytoplasm and cell membrane compartment in skin cells
34 and particularly in facial sebocytes,
33 illustrating the key role of sebaceous gland cells in androgen metabolism.
The effects of testosterone and 5α-DHT are mediated by binding to the nuclear androgen receptor (AR), also expressed in human sebaceous gland cells.
35 AR is a member of the steroid superfamily of ligand-dependent transcription factors. 5α-DHT binds to the AR with greater affinity than testosterone and the 5α-DHT/AR complex appears to be more stable
36 and therefore, more effective.
Basically:
View attachment 110029
That explains why NW7 have shiny oily scalp. I'm not sure why it affects only top of our head, my guess is that sebum production naturally is higher on the top than on the sides due to increased sun exposure. Many people mentioned balding as a disease, in my opinion it's autoimmune disorder which means it can never be cured and can only be managed.
As you've said in previous post DHT has many functions, so taking finasteride is maybe effective but it comes at a cost (not only for your body but also for your wallet). I'd say that way to fight inflammation is the key to STOP hair loss. People that are microneedling for a while on this forum are reporting reduced dandruff that is strongly correlated to sebaceous gland. That implies microneedling is somewhat effective in this area. Is it enough to promote new hair growth? Probably not, microneedling alone was showing some improvments in the studies, but when combined with minoxidil it had best results. if it's true that it helps with chronic inflammation then it creates healthier enviroment on your scalp and that's why minoxidil is much more effective.
Who knows maybe people that were microneedling in 2013 were onto something and just didn't stick long enough. 6 months is laughable compered to how long it took for them to reach NW2-7.
Link to the whole article:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3051853/
Well that's my theory. It's 4am and I'm pretty drunk so apologise for any mistakes. What do you think?