You might want to try homeopathic "silica"
I had a really bad problem with hairloss when I was 30. It was thinning all over, and I had a bald spot in the middle. I am a woman BTW. I tried all kinds of vitamins and mineral supplements, and nothing made a difference (didn't try the choline/inositol). I even went to the doctor. Then I read about silica in some magazine and decided to try it. It was about five dollars a bottle at the time, so I didn't have much to lose, but I didn't really believe it would work either. But it did. Within a week all hair loss stopped, and it all grew back. It was amazing. I'm 45 now, and hair loss has started to come back maybe 2 or 3 times since then, but always stopped when I took silica. The wonderful thing about this remedy is it's cheap, easy, and no side effects. And you don't have to keep taking it--when the hair loss stops, you stop taking it. I know it sounds too good to be true, but it worked for me, so maybe it will work for you. I have no idea if it will work for men--something tells me the cause is completely different, but it is cheap, so it's worth a try. One more thing--I have found out since then that there are other homeopathic remedies that may be better for stopping hair loss than silica, so you may want to research some.