Bijan Salehizadeh
819 posts

Bijan Salehizadeh
@bijans
Healthcare investor. Howard Stern. Arcade Fire. Bowie. U2. California dreamin'








Men, if your total testosterone is under 500 ng/dL then you are symptomatic, you just might not know it. The standard normal range is between 250-1,000 ng/dL. It used to be up to 1,200 ng/dL in the 1990s and has decreased significantly since. The reasoning behind this is likely multi-factorial and a topic for a separate discussion. The most common symptoms I observe in men with a total testosterone is under 500 ng/dL are: Fatigue Brain Fog Difficulty shedding abdominal fat Low libido Sexual dysfunction (ED) Low motivation Low confidence Inability to put on muscle Difficulty growing facial/body hair The ‘optimal’ range for fertility is from 600-900 ng/dL. When someone consider testosterone hormone replacement therapy (TRT), in my opinion, the goal should be to get them in the optimal range of 600-900 ng/dL. Bring them back to where they should be. They don’t need to be in the 1,200 to 1,500 ng/dL range, just getting these men back to the optimal range will make a WORLD of difference. One of the ways I describe this to my patients is that if you’re car is running on ‘E’ (empty, low gas), your gas level is still technically in the ‘normal’ range. Would you be good with starting a race every day on E? Probably not. Just because your total testosterone is in the ‘normal’ 350 or 450 ng/dL doesn’t mean they are in the ‘optimal.’ Normal isn’t good enough. You deserve to be optimal. I see patients all the time, men under the age of 40, with total testosterone under 400 ng/dL. They’re suffering and they don’t deserve to be. Optimize your health. Don’t guess. Measure your hormone levels. Check the article I wrote recently below breaking everything down ⬇️


Can we block DHT in the scalp without blocking it throughout the body? That is the entire goal of Precision Dutasteride. Dutasteride inhibits both enzymes that produce DHT. In our initial testing, Precision Dutasteride 0.03% did not measurably lower serum DHT. Our clinical study is now testing three concentrations: > 0.03% > 0.3% > 1% But we want an early look at the highest dose. Today is Day 1 of Precision Dutasteride 1%: > @VerbinnenAndrew will apply it to a wet scalp for 3 days > @zach_schrier will apply it to a dry scalp for 3 days On Day 4, we draw their blood. Will we detect any dutasteride?





I try and stay out of political discourse, but the weaponization of testosterone replacement therapy on both sides of the aisle disgusts me. Low testosterone is a very real issue that affects men’s quality of life.

















