Study finds smoking, heavy drinking, and lack of exercise noticeably harm health by age 36.

A study published in the Annals of Medicine found that the negative effects of smoking, excessive drinking, and insufficient exercise are felt by age 36. Researchers tracked 326 participants for over 30 years and discovered that those with all three unhealthy habits had worse mental and physical health. The study emphasizes quitting these behaviors early in adulthood to prevent long-term health issues like cancer and heart disease. Adopting healthier habits later in life can still provide benefits.