Think Bone Density Is Only A Concern For Older Adults? Experts Say You Should Start Paying Attention Much Earlier

Here’s how to protect your bones long before retirement.

Key Takeaways

• Most bone strength is built in childhood, adolescence, and your 20s, so what you do in your 30s and 40s can shape bone health for decades.
• Bone loss is “silent,” with no symptoms until a break, so timely testing matters, especially for women as bone loss accelerates around menopause.
• Weight-bearing and strength exercise, balance work, enough protein, calcium, and vitamin D, and limiting smoking and heavy drinking all help protect your bones now.

When people think of bone health, they typically assume it’s a problem reserved for old age or once you reach retirement. It’s the kind of conversation that comes up later in the long checklist of personal health maintenance—but experts say it’s worth taking care of your bones much earlier.

Reuben Chen, MD, a board-certified physician specializing in sports medicine, explains that the window for building strong bones is shorter than most people realize. “Most of our bone strength and density is built during childhood, adolescence, and our 20s,” he says. “After that, bone density slowly wanes with time.” For those in their 30s and 40s, what you do now can shape how strong your bones are for the coming decades.

What Exactly Is Bone Density?

Bone density reflects how much mineral—usually calcium and phosphorus—is packed into the bone. Higher density usually means stronger bones that are harder to break; low density raises the risk of fractures from falls or even routine activity. Later in life, those fractures “can mean pain, loss of independence, and higher risk of mortality,” Dr. Chen says. Thankfully, it’s never too late to build up strength: “Bone is living tissue that responds to physical demands and can adapt and change throughout your life.”

“During your 40s, this decline is generally modest for both men and women, especially with healthy nutrition and regular exercise,” Dr. Chen says. The faster losses come later. “For women, bone loss tends to accelerate around menopause as estrogen levels fall.”

Bone loss is usually quiet and can creep up on you before you realize what’s happening. “Most people don’t experience noticeable symptoms as their bones become weaker or even until a bone breaks, which is why osteoporosis is often called a ‘silent disease,’” Dr. Chen says. That’s why getting the proper tests at the right time matters, and why protecting your bones from an early age is even more important. 

Tips To Protect Your Bones Now

Load your bones: Walking, jogging, jumping, and dancing all benefit bone health. “Resistance training places load stress on the bones, stimulating remodeling and helping maintain or improve bone density,” Dr. Chen says. His guideline? “Aim for at least 30 minutes of moderate aerobic activity each day, along with muscle-strengthening exercises at least three days a week, with an emphasis on loading the hips and spine.” 

Work on balance and coordination: These exercises reduce fall risk, which is just as important as maintaining density itself. Think single-leg stands, heel-to-toe walks, and sideway stepping as easy ways to keep your bones in check.

Get enough protein, calcium, and vitamin D daily:  If you think you’re falling short of these essential nutrients, ask your doctor about testing and address any deficiencies when they show up.

Limit the habits that work against you: Smoking, heavy alcohol use, and obesity can negatively affect bone density. Try to limit these habits as much as possible, and notice how these factors affect your body when you do engage.