The PRODMED1 crossover trial followed 47 adults aged 60+ through eight weeks each of pulse-based versus meat-based diets, finding both improved glucose and lipid markers equally. However, the pulse diet achieved superior visceral-to-total fat ratio reduction and increased ferritin levels by 15.7 ng/mL compared to 7.0 ng/mL with meat protein. This represents compelling evidence for pulse proteins as a longevity strategy beyond their established cardiovascular benefits. The visceral fat advantage is particularly significant since visceral adiposity drives inflammatory aging and metabolic dysfunction more than total body fat. The methionine restriction inherent in pulse proteins likely contributed to these benefits, as dietary methionine restriction consistently extends lifespan in animal models through improved metabolic efficiency and reduced oxidative stress. While the study's eight-week duration and relatively small sample size limit definitive conclusions about long-term healthspan effects, the findings align with emerging research on protein source quality for healthy aging. The distinct biogenic amine profiles between diets suggest different metabolic pathways are activated, potentially explaining the differential effects on body composition despite matched macronutrients.