Metchnikoff · The Prolongation of Life

Élie Metchnikoff's The Prolongation of Life: Optimistic Studies (1907) — a foundational work by the Nobel laureate who coined 'gerontology'. This book transformed aging from an inevitable fate into a manageable biological process, pioneered the theory that the gut microbiome drives aging, and famously advocated for lactic acid bacteria and fermented foods to extend lifespan. Eight modules — bilingual (Chinese lectures + English teaching), with Chinese MP3 narration. (Wellness-focused; his historical microbiological theories are presented for education, not medical advice.)