Best Exercises for Osteoporosis (Women 40+)

Why osteoporosis happens in perimenopause

Osteoporosis (T-score of -2.5 or below on DEXA) means bone mineral density has dropped to levels where fracture risk is significantly elevated. In postmenopausal women, the mechanism is primarily estrogen-dependent: without estrogen's suppressive effect on RANKL (receptor activator of nuclear factor kappa-B ligand), osteoclast formation and activity increase dramatically. Bone resorption outpaces formation by 2–5x.

Trabecular bone — the spongy, metabolically active bone in the spine and hip — deteriorates first, which is why vertebral compression fractures are the most common osteoporotic fracture. The goal of exercise in osteoporosis is twofold: stimulate osteoblast activity to rebuild bone, and improve balance and strength to prevent the falls that cause fractures.

What actually works

• Progressive resistance training starting at moderate intensity and building to 70–85% of 1RM over time
• Axial loading exercises (squats, standing presses) that transmit force through the spine and hips
• Balance training (single-leg stands, tandem walking) — preventing falls prevents fractures
• Impact training (stamping, small jumps) if cleared by a physician — shown to increase hip bone density by 1–2% per year
• Postural exercises (thoracic extension, rows) to counteract the kyphotic curve that increases vertebral fracture risk

What doesn't work (and why)

• Spinal flexion exercises (sit-ups, crunches, toe touches) — these increase vertebral compression fracture risk by 5–8x in women with osteoporosis
• Avoiding all exercise out of fear of fracture — deconditioning increases fall risk and accelerates bone loss, creating a worse outcome than careful progressive training
• Relying solely on bisphosphonate medication without exercise — drugs slow bone loss but exercise provides the mechanical stimulus for actual bone formation
• Gentle stretching-only programs — they don't generate enough mechanical load to stimulate bone adaptation