Dr. Sandeep Khurana advises his patients that a combination of factors influences human longevity, with 40% attributed to lifestyle choices, 30% to genetics, 20% to social and environmental conditions and the remaining 10% to medical care.

“These are not my numbers,” Khurana, Geisinger Medical Center, board-certified in gastroenterology and transplant hepatology, emphasized. “Studies have been done, and these figures come from public data.”

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