Tuesday Tip: Cortisol and Belly Fat

Tuesday Tip: Cortisol and Belly Fat 😓

Cortisol makes you gain belly fat is a common myth. The idea is that the stress hormone causes stubborn belly fat and therefore we should avoid cortisol ‘spikes’ at all costs (which translates to suggestions to avoid certain workouts etc), but is that really the truth?

Cortisol is essential. It helps regulate energy, inflammation, and even fat metabolism. Levels naturally rise and fall throughout the day, with a large spike in the morning (part of your circadian rhythm) and smaller increases during activity or stress. Research shows these short-term rises are not harmful, they’re protective and necessary. Exercise, fasting, even drinking coffee trigger temporary cortisol increases, and that’s a good thing. These transient spikes mobilize stored fuel and support recovery. If cortisol alone caused belly fat, athletes and early risers would all struggle with weight gain, which clearly isn’t the case.

So where does the belly fat myth come from? Chronic stress or Long-term elevated cortisol has been linked to appetite changes, sleep disruption, and overeating. But importantly, cortisol doesn’t directly add fat to your stomach. Instead, chronic stress often leads to behaviors like late-night eating, less activity, poor sleep etc that add up over time. The hormone plays a role, but it’s not acting in isolation.

Some also claim exercise spikes cortisol and therefore makes fat loss harder. Acute exercise-induced cortisol is good – studies show that long-term training actually lowers resting cortisol levels and improves stress resilience. So workouts don’t make you fat, they make you fitter and more stress-tolerant.

Remember – cortisol spikes are normal and often beneficial. Chronic stress may influence weight, but mostly via the habits it can create, not hormones alone. Exercise helps regulate cortisol long-term. If you’re concerned about ongoing stress or health issues, consult your doctor—not social media.

Stressing about cortisol is more harmful than the hormone itself.

Happy Tuesday 🤗
xx