One aspect puzzles me. In FUT a strip is removed and closed so a part of the scalp vanishes and is replaced by a thin scar. The areas adjoining the scar retain their hair density and very often with trichophytic closure hair grows out of the scar, again with no reduction in density.
In FUE follicular units are harvested individually. No large scar is generated but hundreds (thousands?) of tiny ones. However (and this is my main point), donor area density is reduced because the scalp from where the hair is removed does not vanish and is essentially now a tiny bald spot.
Does this mean FUE thins out the donor area in return for not creating a long FUT scar? Is that the trade-off?

Thanks for asking, as this can be a bit abstract.
When you remove a strip of hair (say 1/2 inch wide by 4 inches long) you are effectively removing skin and pulling the scalp from top and bottom. This in effect stretches the scalp/skin along with the hairs. So if you have a very, very precise measuring tool of hair density before and after the surgery, then you will definitely see a decrease in hair density after the surgery… but this reduction in density is very low and not perceptible to the naked eye.
When follicular unit extraction (FUE) is performed, many hundreds and thousands of hairs are taken out (and never grow back on that spot) so it is easy to see how this would also reduce the donor density.



As a male, it is possible that the impact of testosterone may be offset by Propecia (finasteride). Propecia may also have some beneficial effects on the general genetic balding process, but you need to discuss this with your doctor before doing anything.
The results are interesting, but the sample size was very small and the length of the study was only a few months. This might be worth exploring with further research, though. The paper is almost 2 years old, so if there’s a follow-up study I’d love to see it.
Sometimes a certain pattern emerges which could point to genetics, and other times it may be a medical issues or medications issues. There are many reports online that bupropion (Wellbutrin) causes hair loss, and I’ve previously written about
With respect to the post you are referring to, I never stated I believe in the theory that urination will make Propecia less effective. People write about these things on the Internet and the speculations get propagated (as I have probably contributed). So no — I do not think drinking and increased urination contributes to less efficacy of Propecia. I wouldn’t worry about it.
Dr. Reddy’s Finax is generic finasteride and sold in 1mg and 5mg doses. I believe that their production in India is an FDA approved facility, but sale of the generic 1mg in the US would be a violation of the patent rights of Merck… which is why this medication isn’t available here in the US yet.