4 Nuts That Can Damage Your Brain (And 4 That Protect It From Dementia)

2. Overly Salted Pistachios

Natural pistachios are healthy, but the most commonly consumed are roasted pistachios with high amounts of salt. Excess sodium increases blood pressure, which impairs cerebral circulation.

Risk: reduced brain oxygenation, dizziness, and mental fatigue.

3. Cashews (when highly processed or fried)

Commercially processed cashews are often fried in low-quality oils. This increases their content of oxidized fats, which promote systemic inflammation.

Risk: inflammatory processes that affect cognitive function.

4. Brazil Nuts in Excessive Quantities

Although nutritious, Brazil nuts contain very high levels of selenium. Excessive selenium can cause hormonal imbalances, nervousness, and memory problems.

Risk: selenium toxicity if consumed frequently in large quantities.

Nuts that PROTECT your brain from dementia
1. Walnuts

They are the queens of the brain. Their shape is no accident: they concentrate alpha-linolenic acid (ALA), a type of plant-based omega-3 fatty acid, antioxidants, vitamin E, and anti-inflammatory compounds.