I have been doing some more research on cortisol and ovcr the counter supplements to manage cortisol levels. The National Institute of Health website has some interesting research on cortisol and two other supplements.
Some years ago some doctors figured out Nitric Oxide was a good thing for people who wanted to increase blood flow. The group of people who wanted to increase blood flow includes body builders and guys with erectile dysfunction.
Nitric oxide production in the body is influenced by the level of a hormone called L-arginine. When L-arginine and L-Citrulline are mixed they can actually reduce the hardening of the arteries. Since I don't have any blockages I didn't worry about that. Recently I have come across research on NIH.gov that L-arginine and L-lysine can influence cortisol levels.
You can run some searches using google:
cortisol L-arginine site:nih.gov
l-arginine l-citrulline site:nih.gov
l-arginine l-lysine site:nih.gov
I am currently taking a few grams of each every day to see how it will influence my weight and health.
The different studies go back a few years and are pretty interesting. No dramatic personal results yet.