Some, when eaten in excess or under certain conditions, can affect memory, concentration, and even increase inflammatory processes that harm cognitive health.
On the other hand, other nuts provide fatty acids, antioxidants, and neuroprotective compounds that science associates with a lower risk of cognitive decline and dementia.
Below is a clear guide: which nuts you should limit and which ones you should include more often if you want to protect your brain in the long run.
Nuts That Can HARM Your Brain
1. Peanuts (when not properly stored)
Poorly stored peanuts can develop aflatoxins, toxins produced by fungi that directly affect brain and liver cells. Although this doesn’t happen to all peanuts, they are among the nuts most sensitive to humidity and heat.
Risk: inflammation, cellular damage, and concentration problems.
2. Salted pistachios (in excess)
Natural pistachios are healthy, but the most commonly consumed versions are roasted with high amounts of salt. Excess sodium raises blood pressure, which harms brain circulation.
Risk: reduced oxygen supply to the brain, dizziness, and mental fatigue.