Cortisol is a steroid hormone produced by the adrenal glands, which sit on top of the kidneys. It plays a crucial role in various bodily functions, including:
- Regulating Metabolism: It helps control the body’s use of fats, proteins, and carbohydrates.
- Stress Response: Cortisol is often called the “stress hormone” because it’s released in higher levels during the body’s ‘fight or flight’ response to stress.
- Anti-inflammatory Effects: It reduces inflammation in the body.
- Blood Pressure Regulation: It helps regulate blood pressure.
- Blood Glucose Regulation: It increases blood glucose levels to provide energy to the body during stress.
- Immune System Modulation: It can suppress the immune system’s activity.
- Circadian Rhythm: It’s involved in the body’s sleep-wake cycle, typically peaking in the morning and declining throughout the day.
Excessive or deficient cortisol levels can lead to health problems. For example, too much cortisol over a prolonged period can lead to conditions like Cushing’s syndrome, while insufficient cortisol can cause Addison’s disease.