Research published in peer-reviewed journals has shown that regular peanut consumption is associated with lower levels of inflammatory markers in the blood, including C-reactive protein. The roasting process appears to increase the concentration of some of these bioactive compounds rather than destroying them, which means roasted peanuts retain their anti-inflammatory benefits. Boiling peanuts, a traditional preparation in parts of the American South and in some Asian cuisines, also increases the concentration of these healthful substances.
5. Your Brain Functions Better
Several of the nutrients concentrated in peanuts have specific and well-documented relevance to brain health and cognitive function. Niacin (vitamin B3) and folate are both essential for healthy nerve cell function and DNA repair in brain tissue. Vitamin E is a powerful antioxidant that protects brain cells from oxidative stress — the accumulation of free radical damage that contributes to cognitive aging and is associated with neurodegenerative diseases. Tryptophan in peanuts is a precursor to serotonin, the neurotransmitter involved in mood regulation, sleep quality, and stress response. Magnesium, present in substantial amounts in peanuts, supports healthy nervous system function and has been linked to reduced risk of depression in population studies.
Regular, moderate peanut consumption has been associated in research with improved focus, sharper memory, and reduced mental fatigue. One large epidemiological study found that people who ate peanuts at least four times per week had a 36 percent lower risk of developing age-related macular degeneration — a finding that suggests the antioxidants in peanuts protect not just the brain but the visual system as well. Peanut butter consumption has also been inversely linked to the risk of gastric cancer in a study of more than 566,000 older Americans followed for over 15 years.
