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Carlita was driving home on a November evening when a deer stepped into her headlights, and every instinct said yank the wheel. AAA says that if a deer collision is unavoidable you should brake firmly, hold the wheel and stay in your lane, because swerving can put you in a tree, a ditch or oncoming traffic. AAA also says fall is the most dangerous season for deer crashes, and State Farm says animal collisions happen most from October through December, so where there is one deer, watch for more. This advice is for deer-sized animals, not moose or elk. Seen a deer on your commute? Comment DEER. Illustrative story. Education, not medical advice. Sources: AAA, "Avoid Deer Collisions"; State Farm, "How likely are you to have an animal collision".

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Dale pulled his smoke alarm battery because it screamed every time he cooked, then left a pan of oil on the stove and fell asleep. The Red Cross says fire experts put the time you may have to get out of a home fire at as little as two minutes. NFPA found almost three in five home fire deaths came from fires in homes with no smoke alarm or an alarm that did not work, most often because of missing or disconnected power. Cooking is the top reason alarms go off, so the fix is not a dead battery: use the hush button, open a window, and ask whether your alarm is too close to the stove. Test yours today. Alarm story? Comment BEEP. Illustrative story. Education, not medical advice. Sources: Red Cross, "Two minutes may be all you have to escape a home fire" (2022); NFPA, Smoke Alarms in U.S. Home Fires (Ahrens, Jan 2019, 2012 to 2016 data); Kidde user guide (hush feature, known alarm condition such as cooking).

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Kayla's kayak flipped in a lake in April, and the cold hit like a punch. Cold-water researcher Gordon Giesbrecht teaches the 1-10-1 principle: about 1 minute to get your breathing under control, about 10 minutes of useful movement before your arms and legs stop working, and around an hour before hypothermia makes you pass out. The times vary with the water temperature and clothing, but cold shock gasping in the first minutes is what drowns people, so hold on, breathe, then climb out. Illustrative story. Education, not medical advice. Comment what you would do in the first minute. Sources: McGill Office for Science and Society, Professor Popsicle ( National Center for Cold Water Safety, 1-10-1 (

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Avril does not like dogs. Then a beagle changed her walks. In one small study of older adults, dog owners walked about 22 extra minutes a day. In a review of almost four million people, dog ownership was linked to a 24% lower risk of death from any cause. For people who live alone, a Swedish study found 33% lower. Linked, not proven: healthier people may get dogs. Dog people: how many walks a day? Comment WOOF. Don't get a pet just for your heart. Illustrative story. Education, not medical advice. Sources: Dall 2017; Kramer 2019; Mubanga 2017; Levine 2013 AHA.

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Priya's toddler climbed a dresser with a TV on top. U.S. Consumer Product Safety Commission data report 592 furniture and TV tip-over fatalities from 2000 to 2021, 81% of them children. Open drawers make a dresser top-heavy, so CPSC says to anchor TVs and furniture such as dressers to the wall; most kits cost less than $20 and install in under 20 minutes. Illustrative story. Education, not medical advice. Comment your best toddler-proofing tip. Sources: CPSC Tip-over report news release (Feb 2023).

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4,000 steps a day, or 8,000. One came with half the risk of dying. US government scientists (NCI, CDC, NIA) put step counters on 4,840 American adults aged 40+ for one week (NHANES 2003 to 2006), then followed them for about 10 years. 1,165 died. Unadjusted death rates per 1,000 person-years: 76.7 under 4,000 steps, 21.4 at 4,000 to 7,999, 6.9 at 8,000 to 11,999, 4.8 at 12,000+. After adjusting for age, sex, race/ethnicity, education, diet, smoking, BMI, health status, mobility and chronic disease, 8,000 steps a day carried about half the risk of dying of 4,000 (HR 0.49), and 12,000 about 65% lower (HR 0.35). Walking speed (peak 30-minute cadence) made no significant difference once total steps were counted (HR 0.90, 95% CI 0.65 to 1.27). Observational data: an association, not a promise. For information only, not medical advice. Source: Saint-Maurice PF et al. Association of Daily Step Count and Step Intensity With Mortality Among US Adults. JAMA 2020;323(12):1151-1160. doi 10.1001/jama.2020.1382 Visit to learn how you can live longer.

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One thing raised the odds of staying alive by 50%. It isn't a diet or a workout. A meta-analysis of 148 studies (308,849 people, followed 7.5 years on average) found that people with stronger social relationships had 50% higher odds of survival (odds ratio 1.50, 95% CI 1.42 to 1.59). The link held across age, sex and starting health. When studies used complex measures of social integration, the odds were 91% higher (OR 1.91, 95% CI 1.63 to 2.23). In the paper's own comparison (Figure 6), that effect is larger than smoking under 15 cigarettes a day, avoiding heavy drinking, physical activity, or lean vs obese BMI. So that friend you keep meaning to call? Call them. Observational association, not proof of cause and not a promise. For information only, not medical advice. Source: Holt-Lunstad J, Smith TB, Layton JB. Social Relationships and Mortality Risk: A Meta-analytic Review. PLoS Medicine 2010;7(7):e1000316. doi 10.1371/journal.pmed.1000316 Visit to learn how you can live longer.

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Two people sleep the same hours. One has nearly twice the risk of dying. What's the difference? Researchers put wrist motion sensors on 60,977 UK Biobank adults (more than 10 million hours of data) and followed them for up to 7.8 years; 1,859 died. Everyone got a Sleep Regularity Index score: how consistent their sleep and wake times were from day to day. Split into five equal groups, deaths fell from 565 in the most irregular group to 288 in the most regular. Compared with the least regular fifth, risk of dying was 28%, 38%, 46% and 48% lower in each more regular fifth (hazard ratios 0.72 / 0.62 / 0.54 / 0.52, adjusted for age, sex and ethnicity; 30% lower after also adjusting for activity, smoking, income, shift work and medication). The twist: the best sleep-length group had 31% lower risk (HR 0.69). Regularity was the stronger predictor, and adding sleep hours to the regularity model did not significantly improve it. The most regular sleepers fell asleep and woke within about a 1-hour window most days; the least regular, about 3 hours. The two sleep weeks in the video are an illustration, not participant data. This is an observational association, not proof that changing your schedule changes your risk. For information only, not medical advice. Visit to learn how you can live longer. Source: Windred DP, Burns AC, Lane JM, et al. Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study. SLEEP 2024;47(1):zsad253. doi 10.1093/sleep/zsad253 (PMID 37738616)

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Thirty minutes a week. That's where the biggest drop in risk showed up. Researchers pooled 16 cohort studies of muscle-strengthening exercise (things like weights, resistance bands and push-ups). People who did about 30 to 60 minutes a week had the lowest risk of dying from any cause, from heart disease and from cancer. Then the curve turned: past about an hour the benefit did not keep growing. The numbers: lowest relative risk at 40 min a week for all-cause mortality (RR 0.83, a 17% lower risk), at 60 min for cardiovascular disease (RR 0.82, 18% lower) and at 30 min for total cancer (RR 0.91, 9% lower). The authors summarize the maximum reduction as approximately 10 to 20% at about 30 to 60 min a week. The curves were J-shaped: the estimate stayed below 1.00 up to roughly 130 to 140 min a week, but what happens at higher volumes is unclear. Association, not proof: these are observational cohort studies, most from the US, and the certainty of the evidence was rated very low (GRADE). Few studies informed the high-volume end, and the pooled estimates may be overestimated. The curve shapes on screen are schematic; only the lowest points and the roughly 1.00 crossings are the paper's reported values. For information only, not medical advice. Source: Momma H, Kawakami R, Honda T, Sawada SS. Muscle-strengthening activities are associated with lower risk and mortality in major non-communicable diseases: systematic review and meta-analysis of cohort studies. Br J Sports Med 2022;56:755-763. doi 10.1136/bjsports-2021-105061 Visit to learn how you can live longer.

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Optimists lived 11 to 15% longer. Here is what that really means. A Boston University and Harvard team followed 69,744 women (Nurses' Health Study, 10 years, 2004 to 2014) and 1,429 men (VA Normative Aging Study, 30 years, 1986 to 2016). Everyone answered optimism questions first, then the researchers waited. The numbers, highest vs lowest optimism, adjusted for demographics, health conditions and depression: women lived 14.9% longer (95% CI 11.9 to 18.0), men 10.9% longer (1.3 to 21.5). The odds of reaching age 85 were 1.5 times higher in women (1.2 to 1.7) and 1.7 times higher in men (1.1 to 2.5). Adding health behaviors (smoking, activity, alcohol, diet and more) shrank the gaps to 8.7% in women and 9.8% in men, and they stayed statistically significant. Association, not proof: this is observational, optimism was measured once, and people who feel well may also report more optimism. The authors say optimism may be modifiable and a target to test, not a proven way to add years. For information only, not medical advice. Source: Lee LO, James P, Zevon ES, et al. Optimism is associated with exceptional longevity in 2 epidemiologic cohorts of men and women. PNAS 2019;116(37):18357-18362. doi:10.1073/pnas.1900712116 Visit to learn how you can live longer.