9. Copper Supplements

Copper Supplements

Some tout the use of copper supplements for their effects on red blood cells, immunity, and iron absorption. However, unless your doctor diagnoses you with the rare condition of copper deficiency, you should stay away from this supplement. Psychology Today lists learning disabilities, impaired mental performance, decreased concentration skills, and autism among the brain effects of too much copper in the body. Furthermore, Science Daily reports that improper levels of copper can cause several neurological disorders, including Alzheimer’s disease. You can enjoy proper amounts of copper in foods such as shellfish, nuts, liver, and whole grains.

8. Fried Foods

Air Fried Food

Fried foods hurt not only your heart and your waistline but also your brain. A study in the Journal of Nutritional Science used word and fluency tests to evaluate mental function in participants. In this study, individuals who consumed fried foods suffered from impaired memory and understanding when compared with subjects who enjoyed healthy diets. The consumption of fried foods may trigger inflammation that decreases brain health. Skip the French fries and try roasting veggies in the oven with a drizzle of olive oil instead.

7. Mercury-Containing Fish

Frozen Fish

Fish are an essential source of omega-3 fatty acids and other nutrients beneficial for good brain health. Consuming two to three servings of fish each week can provide the protein, omega-3s, vitamin B12, and iron your body needs. However, certain types of fish are more likely to be high in mercury. High levels of mercury can contribute to memory loss, learning difficulties, and decreased comprehension and understanding. Furthermore, high mercury levels may contribute to Alzheimer’s disease. The FDA provides a chart of healthy fish choices, which also notes which fish carry the highest risk of mercury poisoning.

Related: Fish You Don’t Want on Your Dinner Table


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