Ortolá R, et al. – Researchers analyzed data from 1,951 adults aged ≥ 60 years enrolled in the Seniors-ENRICA cohort in 2008-2010 (wave 0)—and followed-up in 2012 (wave 1), 2015 (wave 2), and 2017 (wave 3)—to investigate the correlation between variations in animal and vegetable protein consumption and unhealthy aging in the elderly. Compared with those who had a > 2% reduction in energy intake from vegetable protein from wave 0 to wave 1, those with a > 2% increase demonstrated a lower deficit accumulation over 3.2 years, 6 years, and 8.2 years of follow-up. No associations were found for animal protein. Less deficit accumulation over 8.2 years was seen when replacing 1% of energy from vegetable protein for an equal amount of carbohydrate or fat, animal protein, dairy protein, or meat protein.