...CAUSE hair thinning or loss? We know anabolic and androgenic steroids, as well as some prescription drugs (e.g., accutane), can cause hair thinning/loss. However, are there any vitamins/minerals/supplements that we know cause hair loss? There was a study that concluded green tea increased DHT levels by almost 73% in mice. I'm not sure how this would translate to human. I'm also curious what happens when you mix propecia/avodart with something that is known to increase DHT and/or make male pattern baldness more aggressive. Which wins? The hair loss medication or the drug/supplement that can cause hair loss?