"Walking is great but it won’t save your bones", says cardiologist: Why strength training is the missing piece

Walking is one of those habits everyone loves to love-it's easy, free, and packs a punch for your heart, mood, and waistline. But if you're counting on it to keep your bones rock-solid as the years add up, US cardiologist Dr. Jeremy London has a wake-up call. With more than 25 years as a cardiovascular surgeon, he says while strolling through the park feels great and supports overall health, it falls short on building real bone strength. The reason? Bones need serious mechanical stress to grow denser, and walking just doesn't deliver enough of a jolt.

Dr. London simplifies it: Our skeletons respond to impact and resistance, such as that from jumping, lifting, or pressing against weight. The ordinary walk keeps you mobile and reduces risks, such as high blood pressure or slow metabolism, but it lacks the "load" that tells bones to toughen themselves up. And all of this matters much more when we reach middle age, particularly for women when estrogen levels fall and the risk of osteoporosis rises. He shared this in a recent Instagram reel, urging people not to abandon walking but to combine it with smarter moves for full-body protection.

Think of your bones as clever engineers; they change according to the demands put upon them. Light, rhythmic steps from walking maintain basic function but don't stimulate the remodeling that increases mineral density in key areas like the hips and spine. The science supports it: low-impact cardio is great for endurance and burning fat, but meta-analyses reveal that resistance work delivers the biggest returns in bone health in older adults. Dr. London observes that without it, you're leaving yourself open to fractures and falls and losing that independent stride later in life.

Age ups the ante. After 50, natural bone loss accelerates and depending only on walks leaves gaps. Women have steeper odds after menopause, but men aren't off the hook. The point of Dr. London isn't to scare; it is to empower. He says in his practice he sees many patients who remain active yet show fragility because their routine doesn't include strength training at all. Unfortunately, walking is not enough.

Enter resistance training, what Dr. London calls a "game changer." Lifting weights, doing squats, or even bodyweight moves like push-ups create the tension bones crave. Moderate to high-intensity sessions-think 2-3 times a week-set off osteoblasts, the cells that lay down new bone tissue. Research confirms improvements in hip and spine density, exactly where falls hit hardest.

Start simple if you're new: dumbbells, resistance bands, or machines at the gym. Go for compound moves that hit all three areas of your body: deadlifts, lunges, overhead presses. Do this gradually. Dr. London advises, to progress gradually so as not to get hurt, possibly under a trainer's eye. Add to your walks and you're golden: cardio for the heart, weights for the frame. And it's not about hours in the gym; consistency trumps perfection.

Add weight to walks: Try "rucking"-strap on a backpack with books or water for extra load. It ups bone stress without fancy gear

Mix in jumps or stairs: Short bursts of higher impact during walks cue bones to toughen up.

Fuel right: Combine training with calcium-heavy foods-especially leafy greens and yogurt-and vitamin D from the sun or a supplement for optimal absorption.

Track progress: If over 50, get a DEXA scan baseline to monitor changes in density.

Dr. London wraps it with encouragement: keep walking-it's fantastic-but lift to safeguard your future. This duo supports longevity, from better balance to lower fracture odds. Chat with your doc before big changes, especially with conditions like joint issues. Small shifts now pay off big down the road.

And remember, consistency matters most; steady, manageable habits build stronger bones far more effectively than occasional intense efforts.

Resistance training involves exercises that make your muscles work against a force, such as weights, resistance bands, or body weight. To practice it, start with proper warm-up, choose exercises targeting major muscle groups, use controlled movements, and gradually increase resistance or repetitions. Aim for 2–3 sessions per week, allowing rest days for recovery, and maintain proper form to prevent injuries.

One must strength train at least 3 times per week, and can do a mix of cardio and light yoga on other days. Strength training builds muscle, boosts metabolism, and improves bone density, while cardio enhances heart and lung function. Light yoga promotes flexibility, reduces stress, and supports recovery, creating a balanced weekly fitness routine that benefits both physical and mental health.

Don't give up on walking however, since it is excellent for your heart, blood pressure, and blood sugar. Even short, regular walks can boost mood, improve circulation, and support overall metabolic health, making them a simple yet powerful daily habit. Strike a balance between various exercises.