Atrial fibrillation, or A-fib, is becoming more common, but doctors say treatments are improving. The condition is a quivering or irregular heartbeat that can lead to blood clots, stroke and heart failure. Experts say more than 10 million Americans have it, mostly older adults. Symptoms include a pounding heartbeat and shortness of breath. Smartwatches and other devices are helping with diagnosis. Causes include genetics, high blood pressure and stress. Treatments range from medications to procedures like ablation. Experts recommend a healthy lifestyle to lower the risk.

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U.S. life expectancy has hit the highest mark in American history. The Centers for Disease Control and Prevention on Thursday reported that life expectancy rose to 79 years in 2024. It’s the result of the dissipation of the COVID-19 pandemic — and also waning death rates from all of the nation’s top killers, including heart disease, cancer and drug overdoses. Preliminary statistics suggest a continued improvement in 2025. Life expectancy is an estimate of the average number of years a baby born in a given year might expect to live, given death rates at that time. It's a fundamental measure of a population’s health.