Ultra-processed Foods and Mental Health
Every time my grandmother came over for a visit, she would look me straight in the eyes and say these words I never forgot. “The greens, the greens, the greens.” I would laugh because she repeated herself so many times she sounded like a broken record. 
After containing my laughter, I replied, “What are you talking about, Grandma?” That’s when she reminded me vegetables like spinach, kale, broccoli, and collard greens were essential for good health. I think my grandmother knew what she was talking about because she lived until the ripe old age of ninety-four. And when my grandmother passed away, my mother took over where she left off and would say, “You are what you eat.”
Years have passed, and I still cherish the words my grandmother told me. So, I make a concerted effort to eat vegetables whenever I can. However, times have changed, and ultra-processed foods like hamburgers and fries, frozen meals, sugary snacks, and energy drinks have become popular because they are convenient and cheap. But can these foods affect the brain? Can they cause anxiety, depression, and other mental health issues?
When I moved out, I became lackadaisical with my eating habits. I was busy and didn’t want to cut up fruits and vegetables. I felt there were more productive things I could be doing with my time. However, my poor eating habits caught up with me because I started putting on extra pounds. I was also experiencing brain fog, which I attribute to increased levels of sugar consumption from drinking too much soda and eating junk food.
Studies show that ultra-processed foods can cause diabetes, obesity, and other health-related issues. Ultra-processed foods have a similar effect on mental health. This is because ultra-processed foods lack fiber, nutrients, and antioxidants essential for brain functioning and brain growth. As a result, overconsumption of these foods can impact the production of neurotransmitters and compromise cognitive ability over time.
Given the fact that ultra-processed foods are loaded with additives, sugars, and preservatives, they can affect the bacteria in your microbiome, promoting inflammation, which triggers a “leaky gut” and sends inflammatory signals to the brain, contributing to depression and anxiety by affecting neurotransmitters like serotonin and dopamine, as well as activating the stress hormone cortisol and impairing the gut-brain connection. As this vicious cycle persists, it creates further inflammation and increases the risks for mood disorders.
Sugary foods can also cause rapid blood sugar spikes and crashes, causing fatigue, brain fog, difficulty concentrating, irritability, and anxiety, which affects functionality and mental health.
Eating unhealthy foods can hijack the brain’s reward system by raising dopamine levels and causing a feedback loop. This, in turn, amplifies cravings for sugary foods, compulsive eating, and poor eating habits that can produce adverse emotional cycles.
There are strategies to protect mental well-being by making changes in diet and lifestyle. They are as follows:
1. Switching to a diet of whole foods consisting of fresh fruits, vegetables, whole grains, and legumes is a great way to improve mental health. Make a concerted effort to reduce ultra-processed foods from your diet wherever you can. For instance, cutting back on soda intake and replacing sugary drinks with sparkling water, unsweetened tea or coffee, coconut water, or plant-based milk. Make a healthy snack pack at home consisting of raisins and nuts or carrot sticks and celery with some hummus and bring it to work and skip the vending machines. The goal is to make healthy foods your daily staples.
2. Practice mindful eating. I typically do a menu for the entire week because of my hectic schedule. In doing so, I am more inclined to stay on track and not eat unhealthy foods. I also make it a point to keep hard-boiled eggs in my refrigerator, along with cottage cheese and fruits, so I can eat them if I want a snack or when I am on the go. In doing so, my blood sugar levels remain more consistent, and it alleviates irritability and brain fog.
3. Staying hydrated is a must for mental health because water supports brain function and neurotransmitter balance and prevents fatigue, anxiety, depression, and brain fog. I typically try to drink 6 to 8 glasses of water a day.
4. Eating protein-rich foods like meat, fish, beans, and nuts provides amino acids to build neurotransmitters like dopamine and serotonin, enhances mood and focus, and improves sleep. Ultra-processed foods or poor nutrition, on the other hand, disrupt sleep and increase anxiety and depression. And don’t forget to exercise to enhance sleep hygiene and overall mental health.
No doubt, diet can significantly impact so many aspects of your life, and most importantly, your mental health. So make it a point to reduce ultra-processed foods from your diet and eat a well-balanced, nutrient-dense diet. It will do wonders for your brain.
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