Cortisol Isn’t the Enemy: How to Support Your Body’s Natural Rhythm

Cortisol is often called the “stress hormone,” and in recent years, it has developed a particularly negative reputation. It is frequently blamed for everything from chronic fatigue and burnout to unwanted weight gain.

But cortisol itself is not the enemy. In fact, it is an essential hormone produced by the adrenal glands that plays an important role in many of the body’s functions, including regulating blood sugar and blood pressure, supporting the stress response, and helping control the body’s sleep-wake cycle.

The key is not eliminating cortisol, but maintaining its natural daily rhythm.

As part of a two-week experiment, one woman monitored her cortisol levels in the morning and evening using an at-home testing kit. Her results showed that her morning levels, which would normally be expected to be higher to help the body prepare for the day, were lower than expected.

In the evening, however, her readings were sometimes elevated.

Dr. Fadi Hanna-Shamouni, an endocrinology specialist, explained that cortisol normally follows a daily biological rhythm. Levels typically rise around the time we wake up and then gradually decline throughout the day, reaching lower levels at night as the body prepares for sleep.

So what can help support this natural rhythm?

Start the Day With Natural Light

Exposure to natural light early in the morning can help regulate the body’s internal clock, or circadian rhythm.

Rather than beginning the day in a dark room, getting outside or spending some time in natural daylight can help signal to the body that the day has begun. Maintaining a consistent sleep and wake schedule can also support a healthy circadian rhythm.

Get Moving in the Morning

A short walk or moderate physical activity can help increase alertness and give the body a natural boost at the beginning of the day.

Research has also found a relationship between physical activity and the body’s hormonal stress response. Regular exercise can support overall health and may help the body better regulate its response to stress.

There is no need for an intense workout first thing in the morning. Even a short walk can be a simple way to combine movement with exposure to natural daylight.

Wind Down in the Evening

Just as the body benefits from signals that morning has arrived, it also needs cues that the day is coming to an end.

Reducing exposure to bright screens and electronic devices before bed can support the body’s natural sleep-wake cycle. Creating a calmer evening routine, dimming the lights, and allowing time to unwind can all help prepare the body for sleep.

Do Not Let the Numbers Become Another Source of Stress

At-home hormone tests may provide information, but they are not a substitute for professional medical evaluation. Cortisol levels naturally fluctuate, and individual readings need to be interpreted in the appropriate clinical context.

There is also no reason to become anxious over every small change in a reading or assume that everyday symptoms are necessarily caused by “high cortisol.”

Instead, focusing on the basics, including consistent sleep, regular movement, morning daylight, and a calmer nighttime routine, can support the body’s natural rhythms and overall well-being.

Cortisol is not something the body needs to fight. It is a necessary hormone with an important job to do. Rather than trying to eliminate the “stress hormone,” the goal is to support the natural daily rhythm that allows cortisol to rise when we need energy and alertness and fall as the body prepares for rest.