Running through perimenopause and menopause
Bone loss accelerates around the final period. Running is one of the few things that loads bone hard enough to matter.
What changes, and how fast
Bone density falls across adult life in everyone. Around menopause, in women, the rate changes gear.
One study followed 108 women from menopause for a mean of fifteen years, measuring bone at the distal radius every other year. The mean annual decrease in bone mineral density was 1.9 percent, plus or minus 0.7. [1]
Compounded, that is the whole point. A rate a little under 2 percent a year sounds survivable in any single year and is not survivable over fifteen of them. And the steepest part of the curve sits close to the final period rather than being spread evenly across the decades after it.
Why running specifically
Bone remodels in response to the size of the load it takes, not the time it spends taking it. That makes peak force the variable, and it is where walking and running genuinely differ.
Peak vertical ground reaction force in walking runs about 1.0 to 1.5 times body weight. In running it rises to about 2.0 to 2.9 times. [2]
Bone geometry tracks that loading. A study scanning masters sprinters, distance runners, race-walkers and sedentary controls found bone mass and structure lined up with how hard each discipline loaded the leg, with the sedentary group at the bottom of the range. [3]
Very few things you can do in half an hour, from your own front door, load bone at running magnitudes. That is the specific argument for running here, and it is narrower and more honest than a general claim that exercise is good for you.
The part that gets left out
Impact loads more than bone. Pelvic floor symptoms are common in midlife women and the tissue changes of menopause can make them more so, which means the readiness question here looks a lot like the one after childbirth: can you take impact without symptoms, rather than has enough time passed.
Leaking, heaviness or a dragging sensation during or after running are not things to train through and not the price of your age. They are common, they are treatable, and they are a reason to get assessed rather than to quietly stop running.
The rest of the practical advice is unremarkable and holds anyway. Build slowly, because rate of load is what injures new runners. Keep most of it easy. Give yourself more recovery than you think the session earned.
Where to start
Walking, and then walking with running in it, gated on effort rather than on a schedule. Week one of First Gear is three twenty-minute walks. Nothing about that changes because of where you are in the transition.
Common questions
Is running good for bone density in menopause?
Running loads bone at roughly 2.0 to 2.9 times body weight against 1.0 to 1.5 for walking, and bone remodels in response to load size. That makes it one of the few accessible activities in the range that signals bone to adapt. It is not a treatment, and an existing diagnosis is a conversation for your clinician.
How fast does bone density drop after menopause?
In a study following 108 women from menopause for a mean of fifteen years, the mean annual decrease in bone mineral density was 1.9 percent plus or minus 0.7. The loss is not spread evenly, and the steepest part sits close to the final period.
Is it safe to start running in perimenopause?
For most people, starting from walking and building slowly, yes. The caveats worth taking seriously are an existing bone diagnosis and any pelvic floor symptom during impact, and both are reasons to speak to a clinician first rather than reasons to give up on running.
Why is running harder than it used to be?
Aerobic capacity declines with age in everyone, and the rate depends heavily on how much training you keep doing. Sleep disruption and changes in recovery make it feel worse again. None of that means the response to training has gone away.
References
- Ahlborg HG, Johnell O, Turner CH, Rannevik G, Karlsson MK. Bone Loss and Bone Size after Menopause. New England Journal of Medicine 349(4):327-334, 2003.
- Nilsson J, Thorstensson A. Ground reaction forces at different speeds of human walking and running. Acta Physiologica Scandinavica 136(2):217-227, 1989.
- Wilks DC, Winwood K, Gilliver SF, et al.. Bone mass and geometry of the tibia and the radius of master sprinters, middle and long distance runners, race-walkers and sedentary control participants: A pQCT study. Bone 45(1):91-97, 2009.