I think the results with Pregnenolone have been mixed for 2 reasons:
1. Oral preg is poorly absorbed, but transdermal preg is well absorbed. A lot of people report no hormonal changes when using oral pregnenolone, but oral pregnenolone is used more commonly for it's mental health properties.
2. The pregnenolone assay itself is considered 'worthless' in men. The better predictor of pregnenolone is to look at what comes from it (progesterone and DHEA).
Sonny