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What the Science Says about the “Cortisol Detox” Trend

April 28, 2026

The “cortisol detox” trend claims to be a quick fix for stress. But experts say you can’t detox cortisol and instead recommend focusing on ways to support your body’s natural cortisol cycles.

Salila Kurra, MD, a Columbia endocrinologist and medical director of the Columbia Adrenal Center, explains what cortisol does and how to support a healthy daily rhythm.

What is cortisol, and why does our body need it?

Cortisol is a hormone made by the adrenal glands. It is often called the “stress hormone” because it is increased during times of stress. But your body is always making some amount of cortisol, which helps regulate your blood pressure, metabolism, and blood sugar.

What is the “cortisol curve?”

The cortisol curve refers to the fact that your body naturally makes more cortisol in the morning and the level declines throughout the day. Cortisol levels are lowest at night before bed. This cycle helps you wake up in the morning and get ready for bed in the evening.

What is a “cortisol detox,” and is it misleading?

“Cortisol detox” refers to the idea that adopting certain habits—such as limiting caffeine and screen time while getting more sleep, eating right, and meditating—can help decrease overall cortisol levels, therefore lowering stress.

My concern with the “cortisol detox” is the view that cortisol is bad for you. “Detox" is misleading because cortisol is not a toxin; it’s necessary for many important bodily functions and can be increased with healthy activities such as exercise.

What does a so-called “cortisol detox” get right?

The general idea of decreasing stress by adopting healthier habits is great.

How do we support a healthy cortisol rhythm?

Many daily habits can help, such as following a good sleep schedule, maintaining a healthy diet, meditating, getting exposure to sunlight during the day, and minimizing screen use close to bedtime. Healthy routines such as these can support healthy cortisol cycles.

Salila Kurra, MD, is an endocrinologist, associate professor of medicine at Columbia, and medical director of the Columbia Adrenal Center.