Dang!
I was wandering through old posts looking for information about Nelson’s Ratio for TT and E-2. I stumbled upon an alarming study on Tadalafil. First, some background.
I only have 1 useful (sensitive) blood test for E-2:
E-2 at 75mg Test—
sensitive (4/29/25): 29 (< 30) (Quest)
TT/MS at 75mg Test 1102 (250-1100) (Quest)
TT/E-2 Ratio: 38
This is way beyond Nelson’s upper limit of 20. It implies that my TT is too high or my E-2 is too low (or both).
Over this past year, my hormone symptoms have gotten worse, not better, especially over the past 2 months. I currently have very low energy/motivation, no interest in being social, brain-fog, no libido, almost no penile sensitivity and poor sleep.
One cause may be Tadalifil. In mid-April I started taking 5mg/day to improve my ED symptoms and to improve my BPH issues—it helped with both. Today I found this study (posted by Nelson) which showed that taking 10 to 20mg Tadalifil daily causes E-2 to drop nearly in half!!
ABSTRACT
Introduction. It has been reported that lack of sexual activity due to erectile dysfunction (ED) may be associated with testosterone (T) decline.
Aim. To investigate whether the known changes in sex hormones associated with resumption of sexual activity are sustained in the long term.
Main Outcome Measures. Primary endpoints were variations from baseline of steroid hormones: total T, free T (f T), and estradiol (E). Secondary endpoints were variations of erectile function domain scores at International Index of Erectile Function-5 (IIEF-5).
Methods. In an open-label...
Questions:
Am I reading this right? That’s a huge drop. Were there any follow-up studies?
Should I stop taking Tadalifil to see if my symptoms improve (even though it is helping my ED and BPH)?
Is there a way to increase E-2?
Thanks for any comments!