A Cloudy Mind: Seven Foods That Are Harmful to Brain Function

The impact of nutrition on brain health is profound and multifaceted. It needs a constant supply of nutrients to function optimally, and the foods we eat can impact cognitive function, memory, mood, and overall mental clarity. In this review, we’ll look at which foods can be harmful to the brain. Mostly, we’ll focus on highly processed foods. They can undermine brain health and lead to a range of cognitive and neurological problems.

Popcorn

A popular microwave snack. “Many brands of popcorn use trans fats to extend their shelf life and enhance flavor. Trans fats are inflammatory and increase oxidative stress in the body,” says registered dietitian Catherine Gervasio. This type of fat also disrupts the integrity and function of cell membranes, which is critical for maintaining neural connections and overall brain health.

Instant Noodles

Shortcuts aren’t always a good thing. “Instant noodles are high in sodium, and consuming too much of it can increase blood pressure, which reduces blood flow to the brain, impairs cognitive function, and increases the risk of stroke and vascular dementia,” explains Gervasio. That means too much sodium can impact brain function in the long run.

Potato Chips

Another popular snack that also carries risks due to its high salt or sodium content. “This product may contain high levels of acrylamide, which has been shown to have neurotoxic effects. Acrylamide damages neurons and contributes to cognitive dysfunction."

Sugary soft drinks

The high sugar content in soda is very harmful, this is known to all. “By itself, carbonated water is a low-calorie product with virtually no nutritional value. But adding sugar to it negatively affects the health of the drinker’s brain. Regular consumption of such drinks can aggravate oxidation in the body and stimulate the inflammatory process in the brain.

Soft marmalade with dyes (gummy bears)

Another “sugar bomb”, weighed down with artificial additives. “This favorite children's sweet can disrupt the health of the intestines. And this is associated with numerous problems, including cognitive dysfunction due to the direct connection between the intestines and the brain,” says Gervasio. Dysbacteriosis or imbalance of intestinal bacteria leads to systemic inflammation, which affects the brain.

Soups in cans

Although this type of canned food is convenient to prepare, it often contains artificial flavors, colors and preservatives. "Manufacturers add them to improve taste and extend shelf life. They have adverse effects on brain health," Gervasio warns. Opting for fresh or homemade soups can help reduce these risks.

Margarine

The easy and cheap substitute for butter is another source of trans fats. “These fats can increase the level of ‘bad’ cholesterol and decrease the level of ‘good’ cholesterol, which leads to an increased risk of cardiovascular disease,” the expert believes. Thus, the blood flow to the brain is reduced, impairing cognitive functions and increasing the risk of developing neurodegenerative diseases such as Alzheimer’s.