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.
