A recent peanut butter study challenges the assumption that peanut butter is a food that should be limited due to its calorie density. The study suggests that peanut butter may offer benefits beyond basic nutrition, supporting both physical strength and cognitive function. Two randomized controlled trials have found that adding peanut butter to the diet can improve muscle power in older adults at risk of falls, while younger adults consuming peanuts or peanut butter showed improvements in memory, mood, and stress levels.


The findings of these studies surprised researchers, as participants did not gain weight despite increasing their intake of protein and unsaturated fat. Peanuts and peanut butter are naturally high in protein, providing around 10 grams per serving, and may contain compounds like arginine that improve blood flow to muscles. It is recommended to choose minimally processed peanut butter without added oils or salt to reap the potential benefits for muscle and brain health highlighted in the research.