The science · Part 1 of 4

It starts in your brain.

Your GLP-1 is often talked about like a stomach medicine. But a lot of what you feel on it, from the quiet around food to the waves of nausea, starts in your brain. Here is what researchers know, what they don't know yet, and where +Steady fits in.

Why food gets so quiet

GLP-1 is a hormone your gut already makes after you eat. Your medication copies it and keeps it working much longer than your body's own version. GLP-1 receptors sit in parts of the brain involved in appetite and reward, including parts of the dopamine system.¹ When your medication reaches them, food stops pulling at you the way it used to.

For a lot of people, that is the whole point. One woman described it in a single line:

"For the first time in my life, my brain was quiet."

Personal essay, AOL³

Why the nausea isn't only your stomach

Nausea is the most common side effect. In the largest trial of one weekly GLP-1, here is how often people felt it:⁴

It's natural to blame your stomach. But researchers believe much of this nausea comes straight from the brain, through GLP-1 receptors in the area postrema, a small area that acts as one of the brain's nausea centers.² That helps explain why nausea can hit even on days you've barely eaten.

The good news is that these side effects mostly show up when you start or move up a dose, and they usually ease as your body adjusts.² You'll find more on that pattern in Part 4.

That flat feeling

Some people say other things feel less exciting too, not just food. Because GLP-1 works on reward pathways, doctors say a link is biologically possible. So far, though, studies have not found convincing evidence that these medicines cause it. As one obesity medicine doctor put it, "we haven't seen it in the data."¹

Most studies weren't designed to look for it, so if you notice a real change in your mood or motivation, don't brush it off. Bring it up with your prescriber.

Where +Steady comes in

+Steady can't change how your medication works on your brain, and it won't stop nausea that starts there. What it can do is make sure the nutrients your nervous system relies on aren't one more thing running low while you eat less.

• Vitamin B6 and B12 (active forms): your body uses both to turn food into energy and to keep your nerves working normally.*^5,6
• Folate (L-5-MTHF): the active form of folate, which works hand in hand with B12 in your body.*⁷
• Ashwagandha: an adaptogen studied for lowering cortisol, your body's main stress hormone.†⁸

† Studies on ashwagandha and cortisol used 225 to 600 mg a day.⁸ +Steady's ashwagandha is part of a 126 mg Energy & Vitality Complex, so its amount is lower than in those studies.

What +Steady can and can't do

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

This page is for general education, not medical advice. Talk to your prescriber or pharmacist before starting any supplement, and before changing anything about your medication. DigeZyme®, LactoSpore® and BioPerine® are registered trademarks of Sabinsa Corporation. Last reviewed October 2026.