Full Breakdown
Daily Peanut Butter Consumption May Enhance Muscle Power in Older Adults
3/2/2026, 10:09:17 PM
Study Overview and Findings
A recent study conducted by researchers at Deakin University in Australia suggests that daily consumption of peanut butter may improve muscle power in older adults aged 65 and above. The study, published in the Journal of Cachexia, Sarcopenia and Muscle, involved 120 participants who were living alone and at risk of falls. Over a six-month period, those who consumed approximately three tablespoons of natural peanut butter daily demonstrated a significant improvement in a key lower-body function test, specifically the five-times sit-to-stand test. Participants in the peanut butter group completed the test about 1.2 seconds faster than those in the control group, indicating enhanced muscle power, which is crucial for activities such as rising from a chair and climbing stairs.
Dr. Sze-Yen Tan, the lead researcher and associate professor of nutrition at Deakin University’s Institute for Physical Activity and Nutrition, noted that while walking speed did not improve, the increase in muscle power is vital for preventing falls. Dr. Sam Setareh, a cardiologist at Cedars-Sinai Medical Center, emphasized the importance of muscle power in real-world tasks that help prevent falls, such as quickly catching oneself during a trip.
Nutritional Impact and Limitations
Participants in the peanut butter group also experienced an increase in protein and healthy fat intake without any weight gain during the study. However, Dr. Setareh cautioned that the observed improvement in muscle power, while clinically meaningful, is modest and not sufficient to change clinical practice. The study did not assess actual fall rates, fractures, or hospitalizations, and further research is needed to determine if the improvements in muscle power lead to a reduction in falls among older adults.
Dr. Tan highlighted that while peanut butter can be a beneficial addition to the diets of older adults, it should not be considered a standalone solution. She stated, "Eating 43 grams per day over six months was found to be effective in increasing protein intake and better muscle power." However, she also noted the importance of combining adequate protein intake with resistance and balance training for optimal fall prevention.
Funding and Future Research
The trial was funded by The Peanut Institute, a nonprofit organization based in Georgia. Dr. Tan clarified that the institute did not influence the study's design, analysis, or publication decisions. Future studies are necessary to explore whether frailer or protein-deficient seniors might experience greater benefits from peanut butter consumption and to evaluate the long-term effects on fall rates.
Verbatim Quotes
- "In this trial, we measured different aspects or dimensions of physical function, such as mobility, balance, muscle power and muscle endurance." — Dr. Sze-Yen Tan, Associate Professor of Nutrition, Deakin University
- "A change of this magnitude is small, but potentially relevant." — Dr. Sam Setareh, Cardiologist, Cedars-Sinai Medical Center
- "Eating 43 grams per day over six months was found to be effective in increasing protein intake and better muscle power." — Dr. Sze-Yen Tan, Associate Professor of Nutrition, Deakin University
This study presents promising insights into the role of dietary choices in enhancing muscle power among older adults, yet underscores the necessity for comprehensive strategies that include physical training to mitigate fall risks effectively.
