These are the foods that are most harmful to the brain

How important is food to maintain good physical and mental health. A healthy diet is the first step to prevent or improve some diseases. Our brain needs certain nutrients to function but if your diet is not adequate you can be doing a lot of damage. Take note of the foods you should avoid if you want to maintain good cognitive health.

Salty foods

Snacks, cured foods and predominated and ultraprocessed overflowing with salt, not only can cause high blood pressure or contribute to weight gain due to fluid retention, there are also studies that conclude that diets with a high sodium content are associated with cardiovascular problems and early cognitive deterioration. In a study by Nature Neuroscience it was stated that "Excess salt in the diet suppresses cerebral blood flow at rest and endothelial function, leading to cognitive decline."

Saturated fats and trans fats

Junk food and hydrogenated oils cause havoc in the body. Junk food, chips, hamburgers, pizzas, ice cream … create addiction and, consumed in excess, can impair cognitive abilities, even produce changes in brain chemistry as the experts at Princeton University warn.

All these foods are manipulated so that you can not stop consuming them or it costs you a lot. According to a study published in Science Direct, "Working with animals over the past three decades has generated convincing evidence that A Western diet, rich in saturated fats and refined carbohydrates (HFS diet), can damage several brain systems."

Hydrogenated oils increase beta-amyloid in the brain, a peptide that is associated with Alzheimer's. You will find them in margarines, industrial pastries, cookies, snacks … Care at home if you cook with oil. Always use coconut or olive oil watching the temperature and avoid reusing it too many times, our recommendation is no more than twice.

Sugar, fructose and artificial sweeteners

Ingest sugar in excess can cause long-term neurological problems, affect memory and the ability to learn, besides being harmful for the health in general.

The fructose in the fruit seems to be the good sister but, consumed at high levels does not allow brain cells to work optimally which are those that allow us to learn and those that provide mental clarity so there would be a decline in the ability to learn and process information as well as memory.


Artificial sweeteners seem a better option than sugar, especially when it comes to losing weight or, at least, not increasing size. But nevertheless, its excess consumption maintained over time can cause cognitive problems and brain damage. These ingredients are usually loaded with additives, preservatives and dyes, substances harmful to the body that are not going to do you any good.


In the general recommendations of healthy lifestyle It is always recommended to avoid alcohol and tobacco. We will not deprive you of a copy of wine from time to time, a cane with friends or a mojito on the summer terrace but, as always, excessive consumption is highly damaging.

In addition to damaging the liver, It is also harmful to the nervous system, causing confusion, affecting clarity and mental agility, reasoning, memory and even altering the behavior or motor functions by affecting the prefrontal area of ​​the brain. Virtue is in moderation!


Quiet that we are not wanting to take away your beloved morning coffee, but the excess (eye, the excess!) Of caffeine it can cause headaches, anxiety, insomnia, confusion, hallucinations … In short, do not abuse caffeine because your brain will suffer and of course it will let you know (and pay).

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Beware of consuming too much tuna because it is very healthy and provides very necessary nutrients for the organism such as Omega 3 fatty acids and proteins, but, Being a large fish usually contains a good amount of mercury that ingest it would remain in our body. Our body can be eliminating waste substances but excessive consumption would prevent that cleaning causing accumulation of mercury in the body that can cause, among other damages, cognitive deterioration.

Try lead a healthy life with a balanced diet and remember that moderation is important. Excessive consumption, especially of this type of food that can harm the body, will surely end up taking your toll. Avoiding it is in your hand.