Credit: Twitter

Have you seen Jenelle Evans's baby daddy shirtless? Of course you have. Nathan Griffith is basically allergic to clothing, and spends the majority of his waking hours wandering around either sans shirt or in a man-tank. We're so blessed!

Fans of Teen Mom 2 have already become well acquainted with Nathan's amazing body, and it's hardly a surprise to find out that this dude works super hard to maintain his muscular physique. After all, he's an MMA fighter and part-time model!

Nathan hits the gym almost everyday to exercise, but it looks like he also watches his diet and drinks healthy shakes to boost his metabolism, and of course, give him energy. That's the good news. The bad news is that Jenelle posted a photo of Nathan's various man-powders, and one of them was DHEA (dehydroepiandrosterone) — a supplement that purportedly boosts your muscle mass and immune system, not to mention your sex drive!

Unfortunately, DHEA is pretty controversial, and some of Jenelle's fans seem to think it counts as a steroid — which would mean that Nathan's six-pack is less-than-authentic. His response? "Over the counter DHEA doesn't do s—t besides boost your mood and energy," he tweeted. "If it was real the FDA would have banned for being a steroid."

Fair enough — and considering that Jenelle is basically a doctor (we mean, medical assistant), we're thinking Nathan would know.

Do you think Nathan is taking steroids? Hit the comments below!