The research, ranked

The prevention playbook, one killer at a time. Each article takes a major cause of death or decline, ranks every risk factor the evidence supports, and gives you the concrete moves that lower it.

8 deep divesEvidence

8 deep dives · the badge is the strength of the evidence behind each

• 🚬What quitting gives backEvidence: Moderate−10 yrs of life for people who keep smoking versus people who never started, in the largest US and UK cohorts.
• ⚖️What extra weight costsEvidence: Moderate+6.1 yrs of life expectancy associated with bariatric surgery for severe obesity versus usual care, rising to 9.3 years for people with type 2 diabetes (, 174,772 people) — the years attached to weight are recoverable.
• 🩺Lowering blood pressureEvidence: Moderate×2 death risk from stroke or heart disease with every 20-point rise in systolic pressure above 115, with no safe plateau (1 million adults).
• 👂Hearing, vision, brainEvidence: Moderate−48% less cognitive decline over three years in at-risk older adults who got hearing aids, in the ACHIEVE randomized trial. The biggest single modifiable dementia factor is also one of the most treatable.
• 🚗Surviving the roadEvidence: Low24× the death rate per mile for motorcyclists versus car occupants (NHTSA). What you ride, and how, is a genuine longevity input.
• 🛌Sleep and lifespanEvidence: Low7.9% of all deaths in a cohort of 172,321 US adults were attributable to suboptimal sleep patterns. Adults with all five healthy sleep traits were projected to live 4.7 years longer for men and 2.4 for women.
• 🍬Type 2 diabetes riskEvidence: Moderate1 in 3 US adults has prediabetes, and more than 8 in 10 of them do not know it (CDC). Diabetes at 50 costs about 6 years of life.
• 🧠How to escape dementiaEvidence: Moderate45% of dementia cases worldwide are attributable to 14 risk factors you can act on, most of them decades before symptoms.