We tend to think aging wears us down little by little. But your immune system has two turning points when that process speeds up. Here’s what changes your defenses, and how to give them the support they need.

Most of us think aging moves in only one direction. But after just four weeks of eating differently, older adults showed signs of a younger biological age. And get this: the diet with the clearest results may challenge what you’ve heard about eating for longevity.

Lower electric bills. Longer-lasting bulbs. Energy-saving lights sound like a win, but could we be paying with our health? Researchers are sounding an alarm about effects on healthy aging, metabolism, cellular energy, liver health and more.

The older we get, the less attention we give to the health of a particular organ. Now research ties it to a 50% lower risk of death and better odds against cancer. That’s a wake-up call to give this forgotten gland the attention it deserves.

Stress doesn’t always end when your day does. Its biological effects can reach areas of the brain involved in memory and thinking. And, oddly enough, show up in our saliva to offer an overlooked clue about brain aging.

Protein is everywhere right now — but researchers are asking whether constantly adding more is really the best strategy for healthy aging. A major review suggests that, for some people, the answer may lie in doing the opposite.

Selenium plays a role in many bodily processes, including reproduction, thyroid function, and protecting the body from free radicals and infection. But what it can do to slow brain aging got our attention, even in the event of stroke…

Researchers restored a fundamental process inside severely damaged brains, and what happened next challenged assumptions about how permanent Alzheimer’s damage may be. The finding points toward an overlooked piece of the puzzle.

Always tired or struggling to stay motivated? That can sound an awful lot like chronic fatigue. New research points to a blood marker that may help explain why — and it’s one already linked to heart and brain health.

For decades, you probably chose low-fat milk and yogurt to protect your weight and cholesterol. But when researchers had people eat three servings of full-fat dairy every day, what happened wasn’t what conventional wisdom would predict…

Body fat, belly fat and muscle are often top of mind when we think about diet and healthy aging. But a new study suggests your daily coffee habit may be influencing all three — along with your metabolism.

Something starts changing in your brain’s memory center around 50. Scientists have uncovered a shift that may help explain why the aging brain becomes more vulnerable, and what steps we can take to protect it.