I asked a 105-year-old when middle age starts: Her answer delighted me—and made me feel better about turning 40

Turning 40 often raises questions about aging. Is it the start of midlife or something more meaningful? For Shirley Hodes, a vibrant 108-year-old, the answer is simple: “Middle-aged? That’s when you start collecting Social Security! At 50, you’re just starting…