Protecting Bone Density and Collagen in Perimenopause: What I Learned After My DEXA Scan

by | Sep 28, 2026 | Blog Post | 0 comments

Protecting Bone Density and Collagen in Perimenopause

Estrogen decline in perimenopause speeds up bone breakdown faster than the body can rebuild it, which is why heavy, progressive resistance training, enough protein, calcium and vitamin D, and hormone therapy when it fits your situation carry the strongest evidence, not more cardio and not a tub of collagen powder.

TL;DR

  • Estrogen keeps bone breakdown and bone rebuilding balanced. When it drops in perimenopause, breakdown outpaces rebuilding.
  • Plenty of exercise for years can still leave spine density unprotected, because different bones respond to different kinds of load.
  • Heavy resistance training near a real max effort has the best trial evidence for rebuilding lumbar spine density.
  • Hormone therapy has measured effects on fracture risk. The decision is individual and time-sensitive, not automatic.

How does estrogen loss affect bone density and collagen in midlife?

Collagen powder is a weak strategy for bone or skin on its own. The research is thinner than the marketing.

Free quiz: Still saying 'I know what to do, I just don't do it'? Take the free quiz and find out which pattern is running the show.

I found this out on a Tuesday, reading my own DEXA report and not understanding what I was looking at.

I did everything "right." My spine didn't get the memo.

For the past eight or nine years, exercise has not been a maybe for me. Strength training. Running. Walking. Jump rope, which sounds like something out of a Jane Fonda tape, but it's brutal in the best way and it's been in my rotation the whole time.

So when I sat down with my latest bone density results, I expected a pat on the back. Instead I got osteopenia at both hips and across my spine, and one vertebra sitting all the way into the osteoporosis range.

My first reaction wasn't calm curiosity. It was closer to: what did I do wrong?

Once I got past that, I went looking for the actual mechanism, not the Instagram version. What I found changed how I think about training and hormones, and yes, what's on my plate too. It's different enough from what we usually hear about "weight-bearing exercise" that I wanted to lay it out the way I wish someone had laid it out for me.

What's actually happening inside your bones right now

Bone isn't inert. It's more like a construction site that never closes. Cells called osteoclasts break down old bone, and cells called osteoblasts rebuild it. With normal estrogen levels, those two crews stay roughly in sync.

Estrogen is what keeps the demolition side in check. It restrains osteoclast activity and helps osteoblasts survive long enough to do their job. When estrogen drops, that restraint loosens: osteoclasts get more numerous and more active, and rebuilding doesn't scale up to match. The gap between what's torn down and what's rebuilt is where bone density goes.

Estrogen doesn’t just support bone. It keeps the crew that tears bone down from outpacing the crew that rebuilds it. When estrogen drops, that balance breaks first.

This isn't a slow, even slide starting on some official "menopause" date. Research following women through the menopause transition found bone loss accelerates sharply in the year before the final period and continues for a few years after, with average declines around 6 to 7 percent at the hip and spine. A few years, not a few decades, which is why this can sneak up on someone whose routine hasn't changed at all.

The part where "I already exercise" stops being the whole answer

Here's where it got personal. I've been doing weight-bearing exercise for years. Running is weight-bearing. Jump rope is weight-bearing. I assumed that checked the box.

What I didn't know is that bone responds to load in a location-specific way, and the type of load matters as much as the fact that you're moving. A study comparing high-level endurance runners to non-athletes found female runners had noticeably higher bone density in their legs than non-runners, but not in the lumbar spine. Running loads the legs hard. It doesn't load the spine the same way, which is the mismatch: real, consistent cardio for years, and the spine still isn't getting the specific stimulus it needs.

The clearest evidence for what does work comes from a trial called LIFTMOR, run in postmenopausal women with low bone mass, most in their sixties. Twice a week for eight months, brief sessions of heavy resistance training (deadlifts, back squats, overhead presses, five sets of five at more than 85 percent of their max) plus one jumping exercise, the kind of intensity older exercise guidance would have steered this group away from. Their lumbar spine density rose by an average of 2.9 percent, while a comparison group doing gentler home exercise lost 1.2 percent over the same period. One minor back spasm in the whole trial. No fractures.

Nine years of running, walking, strength training, and jump rope, and my spine still lost ground. That’s not a personal failure. That’s what estrogen decline does to bone.

That's the reframe I needed. Cardio didn't "fail." The spine needed to be asked to do something hard, close to a real maximum effort, on a schedule, a different instruction than "move your body most days." Since finding this, I've shifted my own training toward heavier, progressive strength work over the metabolic-conditioning style I'd leaned on for years, which is also why I recently invested in an actual Olympic barbell and rack instead of the lighter equipment I'd been making do with.

If barbell training is new territory, my rundown of the six basic movement patterns is a good place to see where squats, hinges, and presses fit before you start loading them heavy.

6 Basic Movement Patterns

If a spine already has a vertebra in the osteoporosis range, loading pattern matters as much as intensity. A UK consensus statement on exercise for osteoporosis recommends resistance and impact training to build bone, while advising against positions that put the spine into heavy forward flexion under load. That's a conversation for whoever is coaching your lifting form, not a reason to avoid lifting.

Where hormone therapy actually fits

I started hormone therapy recently, and bone was part of that conversation with my doctor, not the whole conversation, but a real part of it.

Hormone therapy protects bone while you’re taking it. The protection isn’t banked for later, which makes this a decision to keep revisiting, not a box you check once.

In the Women's Health Initiative trial, women on estrogen plus progestin had 33 percent fewer hip fractures and 32 percent fewer vertebral fractures than women on placebo, over about five years. The benefit faded once women stopped taking it. The Menopause Society's 2022 position statement puts it plainly: for women under 60, or within ten years of their last period, who don't have a reason to avoid it, the benefit-risk balance favors hormone therapy for preventing bone loss. Past that window, the calculation shifts and gets more individual.

This isn't a recommendation that you start hormone therapy. It's context for the conversation to have with your own doctor, with your own history on the table.

Nutrition: the boring stuff that actually has evidence

Compared to barbells and hormones, this part is unglamorous, which might be exactly why it gets skipped.

Protein. Bone is partly protein. ESCEO recommends postmenopausal women aim for 1.0 to 1.2 grams per kilogram of body weight daily, with 20 to 25 grams of high-quality protein at each main meal rather than backloaded into one. Most women this age eat well under that without realizing it.

Calcium and vitamin D. The Bone Health and Osteoporosis Foundation puts calcium at 1,200 milligrams a day for women 51 and older, food first, with vitamin D at 800 to 1,000 IU. Your bone-building crew needs raw materials, and without them the training you're doing has less to work with.

Collagen supplements. One well-designed trial found postmenopausal women taking 5 grams a day of a specific collagen peptide for 12 months saw a small but real increase in spine and hip bone density compared to placebo, worth knowing as an add-on once protein, calcium, vitamin D, and training are already in place.

Skin is murkier. Estrogen loss is a documented driver of skin collagen loss, with women losing up to 30 percent of their skin collagen in the first five years after menopause, which makes it a very sellable problem. A 2025 meta-analysis of collagen supplement trials found studies not funded by the companies selling collagen showed no measurable effect on skin hydration, elasticity, or wrinkles, while studies funded by those companies did.

The evidence for lifting heavy to protect your spine is strong. The evidence for a tub of collagen powder to protect your skin is a lot thinner than the marketing suggests.

If you want the bigger case for training for how you’ll function in twenty years instead of waiting for a crisis to force the issue, that’s the whole idea behind Healthspan vs. Lifespan (elizabethsherman.com/health-span-vs-lifespan).

What to do about it, in order

  1. Get your actual numbers, not just the summary. Ask for T-scores by site (hip, femoral neck, spine) instead of a one-word verdict.

Today: pull the full report from your patient portal.

  • Start the hormone therapy conversation if you're in the window. Within ten years of your last period, this is worth raising with your doctor, bone results in hand.

This week: book that appointment if it isn't already on the calendar.

  • Build a heavy, progressive resistance training block. Twice a week minimum, working toward loads that are genuinely challenging by the last couple reps.

This week: find a program or coach who can build one around your specific results, especially with a vertebra already in the osteoporosis range.

  • Fix the nutrition inputs. Protein at each meal, plus calcium and vitamin D.

This week: track one full day of eating against 1.0 to 1.2 g/kg of protein.

  • Re-test on a schedule, same machine if possible. DEXA results mean the most compared against your own baseline.

Next month: ask your doctor when your next scan should be, and put it on the calendar now.

What builds bone (and what doesn't do much on its own)

Builds boneDoesn't do much on its own
Heavy, progressive resistance training near real effortSteady-state cardio at a moderate, unchanging load
High-impact loading like jumping or sprintingCollagen supplements without training or adequate protein
Hormone therapy, when it fits your timeline and historyLight resistance bands without progression
Adequate protein, calcium, and vitamin DGeneral "staying active" without a specific loading stimulus

Frequently asked questions

How does menopause affect bone density?

Estrogen normally keeps bone breakdown and bone rebuilding roughly balanced. As estrogen declines through the menopause transition, breakdown speeds up faster than rebuilding can keep pace, and bone density drops fastest in the year before and few years after your final period.

Does HRT help with bone density?

Yes. Trial data shows hormone therapy reduces hip and vertebral fracture risk substantially while it's being taken, and the Menopause Society's 2022 position statement supports it for bone protection in women under 60 or within ten years of menopause onset without contraindications. The effect doesn't persist once therapy stops, so it's a decision to revisit over time, not a one-time choice.

Can bone density be improved after menopause, or only slowed?

It can be improved. In a controlled trial, postmenopausal women doing heavy resistance and impact training for eight months increased lumbar spine bone density by an average of 2.9 percent, while a comparison group doing lighter exercise lost density over the same period.

Can you lose bone density even if you exercise regularly?

Yes, if the exercise isn't loading the specific site hard enough. Running and walking load the legs heavily but load the spine much less. Someone can stay consistently active for years and still lose spine density if that training never includes heavy, progressive resistance work.

Is osteopenia a normal part of aging?

Some bone loss with age is common, but common isn't the same as not worth addressing. Osteopenia means bone density lower than normal peak but not yet at the osteoporosis threshold, and it's the window where changing how you train and eat has the most room to make a measurable difference before a fracture forces the issue.

How often should a woman over 50 have a bone density test?

That depends on individual risk factors and prior results, a conversation for your doctor. A common starting point is a baseline scan around menopause, with repeat testing every one to two years if results show low bone mass, and longer intervals if a baseline scan comes back normal.

The part where knowing this isn't the same as doing it

Here's what nobody tells you: understanding the mechanism doesn't hand you a plan. I couldn't just read about heavy resistance training and drop it into my existing routine. Building a training week that actually applies heavy, progressive load safely, especially with a vertebra already in the osteoporosis range, meant rethinking my entire setup and being honest about which parts of nine years of "staying active" weren't doing what I'd assumed.

That's the gap between information and follow-through, and it shows up everywhere in health, not just bone density. Knowing what the research says is step one. Building it into a week you'll actually keep doing, under your real schedule and your real body, is the harder part.

Elizabeth Sherman | Master Certified Life and Health Coach for Women 40+

If you want to see where your own follow-through tends to break down, not just with bone health but with the habits you already know you should have, take my free quiz. It takes a few minutes and tells you which lever to pull first.

Evidence & Attribution