How Diet and Hydration Affect Stress Levels

Everyone will experience some level of stress throughout their lives; however, it’s important to note how our daily diet impacts how we experience stress. Our brain and body are directly linked to our diet, therefore, fuel your body properly to enhance calmness, focus, and emotional stability.

This article discusses how our diet and hydration affect our stress levels and how we can improve our mental health by implementing a few simple daily habits.



1. Nutrition and Your Brain and Stress Level

To create neurotransmitters (such as serotonin and dopamine) which affect your mood, relaxation, and happy feelings, the brain needs nutrients. Poor nutrition disrupts the production of neurotransmitters, leading to anxiety, tiredness, and stress.

Unhealthy eating will increase the feeling of stress like:

  • Processed Food
  • Sugar/Sugary Snacks
  • Fast Food
  • Caffeine Overconsumed
  • Refined Carbohydrates

These types of food will also create the following experience:

  • Increase in Blood Sugar Levels
  • Irritable, Wearing Down/Anxiety
  • Fatigue, Poor/Decrease Concentration

When an individual experiences a drop in blood sugar, stress hormones (such as cortisol/adrenaline) flood the body, causing feelings of nervousness/overwhelmedness.

2. Nutritional Elements That Lessen Stress

A nutritious diet provides your body with nutrients to support your brain’s health and also helps relieve stress from your nervous system.

a) Omega-3 Fatty Acids (Source):

  • Fish (Salmon, Tuna, Sardines)
  • Nuts/Seeds (Walnuts, Flaxseed)

Reduction of Brain Inflammation and Mood Improvement

b) Magnesium (Source):

  • Dark Leafy Greens
  • Bananas
  • Nuts
  • Whole Grains

Muscle and nerve relaxation through Magnesium provides reduction of anxiety and tension

c) B- Vitamins (Source):

  • Eggs
  • Meat
  • Whole Grains
  • Legumes

Support Brain Function/Ability to Cope With Stress

d) Protein (Source):

Provides stabilization of Blood Sugar through the production of neurotransmitters that help with feeling good.

e) Good Sources of Protein:

  • Eggs
  • Chicken
  • Beans
  • Fish
  • Dairy

3. How the Hydration Affects Stress

Water is crucial for the brain’s functioning; even mild dehydration will lead to an increase in brain fatigue, increased feelings of stressed, headaches the same.

Consequences of Dehydration on Stress Level (Negative):

  • Poor Concentration
  • Heightened Anxiety
  • Mood Swings
  • Physical Fatigue
  • Elevated Levels of Cortisol

Because of the fact that 75% of your brain is water, if you are dehydrated, your

brain is unable to operate at its highest and best level, therefore producing stress during the time that you might be feeling stressed out, will be increased.


4. Caffeine/Sugar/Stress

Caffeine is useful; when consumed in moderation, it may help you get rid of unwanted anxiety; when consumed excessively, it can lead to:

  • Elevation in Heart Rate
  • Increased Anxiety Levels
  • Interference With Sleep
  • Higher Levels of Cortisol

If you are feeling anxious/edgy, you should consider limiting the amount of caffeine (i.e., coffee or energy drinks) you consume, and increase the amount of water you drink.


5. The Gut-Brain Connection 

The gut-brain axis is how your gut (intestines) and your brain connect and communicate. When you have healthy gut bacteria, they can produce serotonin, a chemical known as the "feel-good" hormone.

What Foods Help Your Gut?

  • Yogurt
  • A variety of fermented foods
  • A wide variety of fruits and vegetables
  • Whole grains 

When your gut is healthy, you will have a better mood with lower levels of stress.


6. Ways to Reduce Stress Daily Through Eating Habits 


Easy things to start today include:


  • Hydrate yourself with 6-8 glasses of water daily
  • Eat balanced meals (proteins, carbs, healthy fats)
  • Cut down on sugar and processed foods
  • Eat a variety of fruits and veggies daily
  • Don't skip meals
  • Limit caffeine intake as much as possible (especially before bedtime)
  • Include nuts, seeds & fish in your food.


7. Sample Meal Plan 

Breakfast 

2 eggs on whole grain toast with sliced banana

Lunch 

 1 serving of rice or bread with 1 serving of chicken or beans with a serving of veggies

Snack 

nuts or fruits

Dinner 

1 serving of fish or beans with vegetables

Drink water throughout the day to stay hydrated.


Diet and hydration are very powerful tools in helping to control your level of stress. By consuming healthy and nutritious foods and staying well-hydrated, you'll help your brain function at its best, improve your mood, and increase your body's ability to handle all of the stresses it experiences. Adding small changes to your daily habits of eating can lead to improved mental and emotional health, and well-being.

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