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You already know sleep feels good. But a growing body of research suggests it may actually be adding years to your life.

Most of us treat sleep as the first thing we cut when life gets busy. Work deadlines, late-night scrolling, early alarms — and suddenly seven hours becomes five. But science is making a strong case that skimping on sleep isn't just making you tired. It may be quietly shortening your life.

Science is building a real case that your four-legged companion does more than lift your mood.

You already know your dog makes you smile. But could that wagging tail actually be adding years to your life? A growing body of research suggests the answer may be yes — and the reasons go deeper than a daily walk around the block.

The debate over changing our clocks twice a year has moved from a policy argument to a public health one — and researchers are starting to weigh in.

Most of us groan when the clocks change, lose an hour of sleep, and move on. But a growing body of research suggests the real issue isn't just the inconvenience — it's which time system our bodies are better built for. Here's what the science says.

Everyone is trying to hack their sleep — but which strategies are backed by real science, and which ones are just social media noise?

If you've been on social media lately, you've probably seen it: people taping their mouths shut before bed, wearing blue-light glasses at noon, and stacking a dozen sleep rituals on top of each other in the name of "sleepmaxxing." Some of it looks promising. Some of it looks a little extreme. Here's what the research actually says about which sleep optimization habits are worth your time — and which ones you can skip.

Of all the foods researchers have studied for brain protection, two keep rising to the top — and they're probably already in your kitchen.

You've heard plenty of claims about so-called brain foods. But when you look at where the strongest scientific evidence actually points, two foods come up again and again: extra-virgin olive oil and blueberries. Here's what the research really says — and how much you need to eat to see a benefit.

Heart disease doesn't announce itself — and by the time it does, the damage may have been building for years.

Most people think heart attacks happen to older adults who ignored obvious warning signs. But cardiologists have known for decades that the process behind heart disease often begins in your 30s and 40s — long before any symptoms appear. Here's what the science says about spotting the risk early, and what you can do about it today.

That 2 p.m. slump may not be about needing more coffee — your blood sugar could be calling the shots.

You make it through the morning feeling sharp. Then lunch happens, and by mid-afternoon you can barely keep your eyes open. Sound familiar? Before you reach for another cup of coffee, it's worth asking whether your blood sugar is behind the slump — and what you can do about it.

Protein is having a moment — but more isn't always better, and the science tells a nuanced story.

Everyone seems to be loading up on protein these days. Fitness influencers push it, food companies plaster it on packaging, and chances are someone in your life is tracking grams like it's a second job. But is there a point where eating more protein stops helping — or even starts to hurt? The research says yes, and the answer depends a lot on who you are and what you're trying to accomplish.

Getting kids moving early may do more than build strong bones — it could literally rewire the brain to love exercise for life.

Most adults who struggle to stay active blame willpower, a busy schedule, or just not being "the athletic type." But what if the real window of opportunity opened decades earlier — back when you were on a playground? Emerging research suggests that physical activity habits formed in childhood may make it easier — biologically and behaviorally — to stay active as an adult.

Your body may be harboring millions of dysfunctional cells that quietly drive inflammation, disease, and aging — and researchers are now finding ways to clear them out.

You've probably heard that aging is inevitable. But scientists are increasingly convinced that a big part of what makes us feel and look older isn't time itself — it's the buildup of something called senescent cells. These are sometimes called 'zombie cells,' and the research into clearing them out is one of the most exciting frontiers in longevity science today.

A large Phase 3 trial suggests a once-daily pill could soon offer the same blood sugar control as a weekly injection — no needles required.

Most people assume that if a drug works, it probably comes in a pill. With GLP-1 medications, that hasn't been the case — until now. A major clinical trial just reported that an oral GLP-1 drug matched the blood sugar-lowering power of an injected competitor, and the results are turning heads in diabetes medicine.

If you take blood pressure medication, you may have been told to go easy on bananas and other high-potassium foods. New research suggests that advice may need an update.

For years, people on certain blood pressure drugs have been quietly warned away from potassium-rich foods like bananas, avocados, and sweet potatoes. The concern made sense on paper — some medications raise potassium levels in the blood, and too much potassium can cause serious heart problems. But a new study suggests that for most patients, those worries may have been overstated. In fact, the research points to a surprising finding: eating a diet naturally high in potassium may actually be safe — and even beneficial — for many people on common blood pressure medications.

Researchers are finding microplastics in places we never expected — and children's teeth are now on that list.

You protect your kids from sugar, screen time, and too much sun. But a growing body of research suggests a threat you can't see may be accumulating in their bodies from the earliest years of life. Scientists have detected microplastics inside children's baby teeth, offering a startling new window into early-life plastic exposure — and raising questions every parent deserves to have answered.

Most of us know fresh air is good for us — but the research on what staying inside is actually doing to your body may surprise you.

You lock the doors, close the blinds, and settle into another day mostly spent indoors. Sound familiar? For many American adults, the average day includes as little as 7 percent of time spent outside. What researchers are finding about what that does to the body — and the brain — is worth a serious look.

New research is revealing a surprising link between the bacteria in your belly and how you feel every day — and women may be especially affected.

You've probably heard that the gut and brain are connected. But most people picture that as a one-way street — stress upsets your stomach. Here's what the latest science is showing: it runs the other way, too. The trillions of microbes living in your gut may be actively influencing your mood, anxiety levels, and even your risk of depression. And for women, the connection appears to run especially deep.