Imagine waking up late for work, missing an important meeting, or acting because an emergency happened. You are probably focused on surviving in that moment. Act fast. Think fast. No time to waste. Imagine a racing heart, tense shoulders, or maybe a late-night snack craving. But what’s behind these reactions? In these moments, our body produces a hormone that enables our body to act quickly.  

What Is Cortisol? 

Cortisol is a stress hormone released by your adrenal glands in response to signals from your brain. It’s part of the “fight or flight” response that keeps us alive in dangerous situations. It is a powerful hormone that influences stress. This also impacts nutrition, metabolism, and overall health. Cortisol is essential for energy, alertness, and survival. When you think of hunters and gatherers, survival was essential to stay alive. Stress when you worry about work, school, family, and more biologically operates the same way.  

But it’s not just about stress—cortisol also regulates: 

• Blood sugar levels 

• Blood pressure 

• Energy metabolism 

• Immune system activity 

• Inflammation 

Cortisol naturally follows a daily rhythm. It peaks in the morning to help you wake up and declines at night so your body can rest. Problems arise when cortisol stays elevated for too long due to chronic stress, poor sleep, or imbalanced nutrition. 

Habits That Raise Cortisol 

Some lifestyle choices can keep cortisol higher than it needs to be: 

• Skipping meals or restrictive dieting 

• Drinking too much caffeine or alcohol 

• Eating lots of refined sugar 

• Chronic lack of sleep 

• Constant stress without recovery 

How Cortisol Affects the Body 

In times of stress, cortisol makes sure your body has enough energy to respond by: 

• Raises blood sugar by prompting the liver to make glucose 

• Breaks down muscle tissue to supply protein for energy 

• Promotes fat storage, especially around the abdomen 

• Suppresses digestion and immunity to conserve resources 

For moments of acute stress, cortisol works great. But constant stress puts pressure on the body to be constantly alert. When cortisol is chronically elevated, it can disrupt nutrition, digestion, weight, and long-term health. 

When cortisol stays high, it can disrupt nutrition in several ways: 

• Cravings: Increases desire for sugar- and fat-rich foods 

• Nutrient losses: More calcium, magnesium, zinc, and potassium are excreted 

• Digestive health: Stress can slow digestion and reduce nutrient absorption 

• Blood sugar regulation: Chronic stress may increase the risk of insulin resistance 

When facing an urgent issue, sometimes people experience a loss in appetite, nausea, or need something to eat. These are symptoms of chronically elevated cortisol because our body is acting like it is in a crisis. Anybody or anything in a crisis state for too long will burn out. Our bodies do too.  

Nutrients That Help Balance Cortisol 

The good news? Nutrition can work for you. To keep it simple, having a variety in your diet will be the best way to nourish your body. Certain nutrients do support your body’s stress response and help regulate cortisol levels.

• Vitamin C: Supports adrenal function and recovery from stress 

• Magnesium: Calms the nervous system and lowers cortisol 

• B vitamins: Aid energy metabolism and stress resilience 

• Omega-3 fatty acids: Reduce inflammation and cortisol response 

• Protein: Keeps blood sugar stable and curbs stress cravings 

Cortisol-Friendly Habits to Try 

Balancing cortisol doesn’t mean eliminating stress completely—it’s about giving your body the tools to handle it. Here are some habits that help: 

• Eat balanced meals at regular times 

• Prioritize sleep for natural cortisol rhythm 

• Stay hydrated throughout the day 

• Add calming nutrients like magnesium- and vitamin C-rich foods 

• Use movement and mindfulness to manage stress 

The Bottom Line 

Cortisol is essential for energy, alertness, and survival. But operating on fumes for too long can have repercussions on the body. It is worth evaluating our daily habits such as eating, sleeping, response to environment, and anything that gives stress. Your body will thank you long-term if you don’t let it operate on constant overdrive.