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Whether excited about gaining new followers or desperate to win back lost subscribers, investors who saw changes to their subscriber count performed worse than before their subscribers changed, according to a new study.

Menthol cigarette smokers had a higher risk of dying from any health cause, including heart disease, compared to former non-menthol cigarette smokers, according to what researchers say is the largest and most comprehensive study of its kind.

Among former smokers, those who smoked menthol cigarettes showed:

• 12% higher risk of death from all causes
• 16% higher risk from cardiovascular diseases
• 13% higher risk from coronary artery disease
• 43% higher risk from other heart diseases

Mortality risks were shown to be especially high for individuals who quit smoking or smoked 40 or more menthol cigarettes per day. In addition, Black Americans who currently smoke menthol cigarettes face an 88% elevated risk of mortality from some heart diseases compared to those smoking non-menthol cigarettes, shows the study, which was published in the journal Tobacco Control [February 2025].

• Sexcam viewers can experience deep emotional relationships with webcam performers.
• Frequent sexcam viewers can risk psychological dependence or financial exploitation.
• Sexcam viewers are genuinely concerned about cammers' physical and mental health.
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• Researchers designed a gene-editing system that replaced up to a quarter of the main type of cell in the mouse liver with edited cells.
• The technique shows promise for treating genetic diseases that require the correction or replacement of defective genes in the liver.

A new study led by Brown University researchers shows how a water-rich mineral could explain the planet’s color, hinting at a wetter, more habitable past on the Red Planet.

Researchers shocked to see that bacteria’s antimicrobial resistance is strengthened when exposed to plastic particles and point to a potential outsized impact on refugees

Concentrations of lead in the air remain substantial in developed and developing countries, largely the result of industrial emissions. Even with the decline in lead in gasoline, developed countries, including the United States, still have substantial air lead emissions and in part as a result, blood lead levels in children are high worldwide.

In a new study, researchers used data on lead emissions in the air to estimate the effects of air lead concentration on infant mortality. The study found a statistically significant relation between air lead concentration and infant mortality.

A team of scientists at the Indiana University School of Medicine has identified that an eye condition affecting the retina, the light-sensing tissue in the back of the eye, may serve as an early indicator for Alzheimer's disease. Their findings, published in Alzheimer's & Dementia, offer new insights into the potential use of retinal changes as early biomarkers for Alzheimer's, which could improve diagnosis and treatment of neurodegenerative disease.

A possible “super-Earth” orbits a relatively close, Sun-like star, and could be a habitable world – but one of extreme temperature swings, from scorching heat to deep freeze.