The Role of Diet and Exercise in Mental Health

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So here comes the important question: does diet and exercise influences our mental health?

“You are what you eat, does this applies to mental health as well?”

Like an expensive car, our brain functions best when it gets premium fuel. What we eat directly influence our brain and, ultimately, our mood. We know that eating well helps us feel our physical best. Here is what we are not always told: good nutrition significantly affects our mental health, too. A healthy, well-balanced diet can help us think clearly and be more alert. It can also improve concentration and attention span. Conversely, an inadequate and unhealthy diet might lead to fatigue, impaired decision-making, and can slow down reaction time. In fact, a poor diet can actually aggravate, and may even lead to, stress.

Paying attention to how you feel when and what you eat, is one of the first steps in making sure you’re getting well-balanced meals and snacks. Here are a few things you may want to consider having only in moderation or eliminating completely if you’ve noticed they tend to affect your mental state.

  1. Ultra-processed foods: Ultra-processed foods are often high in sugar, unhealthy fats, and additives, which can negatively impact brain function and mood. Consuming these foods regularly has been linked to increased risks of depression and anxiety.
  2. Alcohol consumption: Excessive drinking can lead to dependency, exacerbate mental health disorders, and impair cognitive functions. It can also interfere with the brain’s neurotransmitters, affecting mood and emotions.
  3. Irregular mealtimes: Skipping meals or eating at inconsistent times can lead to blood sugar fluctuations, which can cause mood swings, irritability, and anxiety. Regular meals help maintain steady energy levels and support balanced brain function.
  4. A lack of sleep: Chronic sleep deprivation disrupts the balance of hormones and neurotransmitters, leading to increased stress, irritability, and a higher risk of mental health disorders. Quality sleep is essential for emotional regulation, cognitive function, and overall mental well-being.

“What about the role of exercise in mental health?”


Exercise is not only beneficial for physical health but also for mental well-being. Regular physical activity can have a profound impact on mood, anxiety levels, and cognitive function. Here are some of the benefits of exercise on mental health:

  1. Mood Enhancement: Exercise stimulates the release of endorphins, often referred to as “feel-good” hormones. These chemicals act as natural painkillers and mood elevators, reducing symptoms of depression and anxiety.
  2. Stress Reduction: Physical activity reduces levels of the body’s stress hormones, such as adrenaline and cortisol. It also stimulates the production of endorphins, which help promote relaxation and improve mood.
  3. Improved Sleep: Regular exercise can help regulate sleep patterns, which is crucial for mental health. Better sleep leads to improved mood, reduced stress, and enhanced cognitive function.
  4. Increased Self-Esteem: Achieving fitness goals, whether it’s running a certain distance or lifting a specific weight, can boost self-esteem and confidence, contributing to better mental health.
  5. Cognitive Function: Exercise promotes brain health by increasing blood flow and oxygen to the brain. It also stimulates the production of growth factors that create new neurons and improve synaptic plasticity, which enhances learning and memory.

It’s never to late to change


Change does not always come easily, especially if you’re working in opposition to habits you’ve formed over the years. Thankfully, if you plan ahead, there are some steps you can take to help make change easier.

  1. Go easy on yourself: Making any type of lifestyle change takes time, and getting from the starting line to the finish point won’t happen overnight. Remember that change is a process. If you slip and stumble along the way, it’s normal and OK.
  2. Eat mindfully: Pay particularly close attention to how various foods and beverages affect the way you feel. For example, if you’re wondering whether or not certain foods could be influencing your mental health, try eliminating them from your diet to see if anything about the way you feel changes. Then, reincorporate them back into your diet and again observe any changes to the way you feel.
  3. Regular Physical Activity: Aim for at least 150 minutes of moderate-intensity exercise or 75 minutes of high-intensity exercise per week. Activities can include walking, jogging, cycling, swimming, or group fitness classes.
  4. Start small: Rather than trying to completely change your entire diet overnight, start with making one small change at a time. This could be as simple as aiming to have at least one piece of fruit every day or limiting yourself to a certain number of caffeinated beverages per week.
  5. Monitor the progress: Making a change and sticking with it is always a great feeling itself. Monitoring your progress can be as simple as journaling about how different foods make you feel or using a checklist to help track the food groups you eat from in a day.

With you,

MY Psychology KK

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