Eating carbs doesn’t just give you energy—it tells your body it’s safe to relax, turn off stress, and feel calm.

This study found that when insulin goes up, your body gets more alert and stressed—not more relaxed—by increasing heart rate and stress hormones, which is the opposite of what the claim says.

Eating carbs raised insulin and made blood vessels open up, but it also made the body’s ‘stress system’ more active—not less—as the claim says. So the study says the opposite of the claim.