It's says that the body reacts in decreasing DHT-levels (induced by Finasteride for example) by becoming ultra-sensitive towards androgens (via receptor-upregulation). Hence, even the remaining DHT/androgens have an even stronger effect.
If you're interested, here are some reductase inhbtors described:
http://www.clonemyhair.com/cgi-bin/hairlossdrugs/ppcal.cgi?action=shopcateg&user=8001&categnumber=1&start=1&stop=11
That's certainly correct because there would be no reason for a company not to extent a patent.
I've one more question: Is the patent for Finasteride as a substance or do they hold "single" patents for the specific indications (BPH / male pattern baldness) ?
Never heard of it so I can't say anything about that substance. Intuitively, I'd say that it does not work.
Did he really say cytokines ? As far as I know, they are supposed to promote hairloss...
bis