Hal Philipp is best known for inventions millions of people touch every day — automatic faucets, reliable door sensors, and the modern touchscreen. After selling his company, he set a new target: living long and living well. In a conversation with Robert J. Marks, Philipp sketches a philosophy of health built on food discipline, metabolic common sense, and habits that make the body “anti-fragile.” Philipp’s motivation is personal. In his early 70s with two young children, he wants to meet his grandkids and be mentally sharp when he does. His mother lived to 99 but suffered dementia late in life. That prospect galvanized him to pursue longevity with quality, not just years on a calendar. Focusing on likely culprits Philipp’s turning point came swiftly. After a close relative developed diabetes, he emptied his kitchen “almost overnight,” ditching cereals, breads, ultra-processed snacks, and seed-oil-laden pantry staples. In their place came whole foods and a low-carb, high-protein, high-fat diet pattern akin to the Atkins approach. His weight fell from about 210 down to 165 lbs. and his …