HGH. Shoot it into your stomach. Causes organs to swell causing the stomach to protrude. Heard this from a guy who owns a supplement shop and works out a lot. I mentioned Harden's stomach and he said maybe. Who knows really. I believe the NBA is going to start testing for HGH soon so if Harden's stomach and mass starts to get smaller, we may have found our answer.
They already test for HGH, I believe since 2015. Also, it doesn't do that. I've done it before. If you want a sign that someone is overusing HGH, it's usually enlarged jaw/ears/nose/feet/hands. I was heavily underusing it (literally a quarter of the recommended dosage) and I got 2 inches taller in a span of 4 months in my mid to late 20's. I assumed it was making me taller, but the doctor explained to me that it was just because of my improved muscular structure and posture (was doing a lot of work on my core, which was the whole reason I was taking it). There are tons of people with body types that include a protruding stomach, and it has to do with the natural curvature of their spine. It's normal and common.
my personal trainer started taking HGH couple months ago and all of sudden looks like he's a few months pregnant
Bodybuilders that have been taking big doses of HGH over long periods of time get HGH gut -- 'Palumboism' -- (James does not have this condition).
Yup. There's no science behind it and non-users get "Palumboism" too. As well as starving kids. HGH abuse can lead to overgrown intestines. Also you can die from drinking too much water.