Can eating junk food affect brain health?

Question

Hello doctor,

I have been hearing a lot about how junk food can mess with your health, but lately, I have been wondering about its effects on the brain specifically. I mean, I get the whole "empty calories" thing, but does eating junk food actually impact cognitive function or mental health in any significant way? I am curious to know if there is any solid science behind the idea that what we eat can affect our brains, and if so, how exactly does it work? Are there certain nutrients or lack thereof that play a big role in this, or is it more about the overall quality of our diet? Just trying to get a clearer picture of how my food choices might be affecting more than just my waistline.

Kindly help.

Answer 1

Hello,

Welcome to icliniq.com.

When we eat junk foods the reward circuits within our brains activate and release the chemical dopamine. Our brains can become overwhelmed by the pleasure from these rewarding foods and in response, the brain adapts and makes more receptors for dopamine. Furthermore, the more fast food individuals consume, the greater the risk of depression. High-refined carbohydrates can lead to blood sugar fluctuations, which can cause anxiety, trembling, confusion, and fatigue. Lack of omega-3 fatty acids can create a mental state that includes anxiety along with depression. Cognitive decline in later years is associated with a high energy intake of protein and fat and a low energy intake from carbohydrates, as reported in a retrospective study in China. Low dietary consumption can also contribute to memory loss. Your diet definitely has a big impact on your brain health. Inflammatory diet patterns that are high in sugar, refined carbs, unhealthy fats, and processed foods can contribute to impaired memory and learning, as well as increase your risk of diseases such as Alzheimer's and dementia. Eating a poor-quality diet high in these types of foods is linked to a higher risk of obesity, depression, digestive issues, heart disease and stroke, type 2 diabetes, cancer, and early death. People who eat fast food four or more times a week are at risk of dying from heart disease by 80 percent.

I hope this helps.

Thank you.