Four minutes of hustle, and a stronger flu shot, tied to less dementia

Earlier work had linked the standard-dose shot to a 40% reduction 8. The study appeared in the journal Neurology. It began in a meeting room, not a lab. Public health officials had seen neurologist Paul Schulz's 2022 vaccine research and invited him to come talk it through, and the questions that followed became this follow-up 8. The background number explains the interest: in 2025, more than 7 million Americans over 65 were living with Alzheimer's, about 1 in 9 people in that age group 8.

About eight years of follow-up later, 170 people had been diagnosed with dementia 23. Among people who did no exercise at all, 2.5% developed it. Among those who skipped workouts but managed a few daily bursts of vigorous routine movement, 0.71% did. Among those who did both, 0.59% did 23. An accumulated 3.7 minutes a day of vigorous routine movement went with a 48% lower risk, plus larger grey matter volumes in several brain regions and fewer abnormal white matter patches 23.

In mice, the resulting CAR NK cells eliminated tumors made of cancerous T cells and reversed liver damage caused by T cells attacking healthy tissue, a model of autoimmune hepatitis 12. The work was published in Nature Biotechnology 12. Current cell therapies need a patient's cells taken out, engineered in a lab, and put back. The FDA has approved seven such CAR T therapies in the past decade, and the manufacturing is the hard part 12. Anderson's summary is short: deliver a nanoparticle that modifies your own NK cells and teaches them to attack 12.

On average, monthly consumption rose by 38 PPP dollars (11%) and income by 28 (15%), with gains in savings, assets, food security, mental health, and women's empowerment 78. Bigger transfers and pricier programs produced bigger effects, but not in proportion to the cost, so cheaper programs tended to be more cost-effective 78. The surprise is the trend: programs run from 2016 onward return a benefit-cost ratio of 5.39, against 2.89 for those through 2015 78.

About seven months later, treated officers showed more favorable attitudes, more empathy, and stronger legal knowledge. A year later, in standardized victim audits, officers in treated stations were 15 percentage points less likely to blame victims, dismissed fewer complaints, and made more referrals. Administrative records showed a 41% reduction in registration delays, and over a longer horizon, more reports of gender-based violence from citizens 73.

That earlier record came from a drop tower in Bremen, where weightlessness lasts seconds. Orbit gives much longer. The team held atoms in an optical dipole trap, which does not disturb their magnetic properties the way a magnetic trap does. They then used a gentle magnetic gradient to expel the faster atoms and tracked the remaining cloud's expansion far longer than in previous experiments 113.

Researchers analyzed DNA methylation across the genomes of 894 dogs in the Dog Aging Project and saw a broad decline in methylation as dogs aged, especially in mobile "jumping gene" sequences called transposons. Differences in aging may arise partly from LINE1 elements, which can damage DNA as they move and are normally held in check by methylation. More than 40% of LINE1-associated genome regions lost methylation as dogs aged 29.