Everything You Need to Know About Your Bones (Before It's Too Late to Build Them)

Most of us do not think about our bones until something breaks. And by then, for a lot of women, the damage has been quietly building for decades.

I did not think about my bones either. Not seriously. I thought about my hormones, my sleep, my muscle, and my gut, but bone health felt like something for older women. Something I would deal with later.

I sat down with Dr. Vonda Wright, a leading orthopedic surgeon, longevity expert, and author of Unbreakable, and she opened with the number that changed everything for me. In the 5 to 7 years following menopause you can lose 15 to 20% of your bone density. Not gradually over a lifetime, in a five to seven year window. And that bone loss is completely silent. You cannot feel it happening. You will not know until you fall and something breaks.

That was the moment I realized I had been thinking about this completely wrong. And I want to make sure you do not have to wait as long as I did to understand it.

What bone actually is and why it matters more than you think

We think of bone as a passive structural material, like the frame of a house, but it is not that at all.

Bone is a metabolic organ. An endocrine organ. It produces proteins that go to your brain and help it make neurons. To your pancreas to help it secrete insulin. To your muscles to help glucose metabolism. One hormone produced by bone goes directly to your brain and tells it to stop eating. Bone is a critical part of your body's energy balance system and it is in constant communication with every major system you have.

It is also where all your blood cells are made.

Once you understand that, bone health stops being a vanity concern or something only elderly women need to worry about. It becomes foundational in the same way that sleep and muscle and hormones are foundational.

The menopause window that most women do not know about

You reach peak bone mass between the ages of 25 and 30. After that bone density declines at roughly 1% per year, which is slow and manageable. Men and women lose at about the same rate during this period.

Then menopause happens.

In the 5 to 7 years following menopause women lose 15 to 20% of their bone density because of the sudden and dramatic loss of estrogen. Estrogen is the primary hormone that protects bone. Its receptors coat bone tissue the same way they coat brain tissue and heart tissue. When estrogen disappears those receptors go into starvation mode and the bone loss accelerates dramatically.

This is why estrogen therapy is FDA approved specifically for the prevention of osteoporosis. It is one of the clearest and most evidence-based applications of hormone therapy in medicine. And it is almost never the first thing discussed when women ask about menopause treatment. The conversation is always about hot flashes and mood and sleep while the bone loss happens in the background unchecked.

The risks that should prompt you to ask for a scan now

A baseline bone density scan costs about $90 if insurance will not cover it. Most gyms now have bone density scanners. This is worth knowing because the standard insurance coverage does not kick in until age 65 and by then the damage may already be significant.

Here are the things that should prompt you to ask for one earlier:

1. Family history. Look at your female relatives. Is your mother or grandmother shrinking? When vertebrae collapse from osteoporosis women lose inches of height. If your grandmother used to be taller that is information about your own potential trajectory. A grandmother who broke a hip is a genetic flag worth taking to your doctor.

2. A fracture after age 23 from a relatively low impact fall. A healthy bone should not break from falling off a curb or being pulled down by a dog. If yours did that is a signal about bone density worth investigating.

3. Smoking or vaping. Nicotine is directly toxic to bone. It inhibits bone formation. This is one of the most modifiable risk factors and one of the most important to address.

4. Autoimmune disease or high dose steroid use. Conditions requiring steroids over time compromise bone density in ways that accumulate quietly.

5. A history of undereating or missed periods. If you were a high-level athlete or struggled with disordered eating and lost your period for months at a time during your teens or 20s you may have missed crucial bone-building years. Those years matter more than most people know because peak bone mass is set during that window.

What Gen X got wrong and what to do differently

Our generation was raised on two messages: run it off and do not eat. Cardio was the answer to everything. Thinness was the goal. We treated our bodies like the point was to make them smaller and expected high performance from them anyway.

The result is that we showed up to midlife with more cardiovascular fitness than strength, more metabolic stress from years of undereating than true nourishment, and not enough muscle or bone density to carry us through the next four decades the way we want to be carried.

The shift is to stop working out to be thin and start working out to be unbreakable. Not smaller. Stronger. Denser. More capable. More resilient. The goal is to be the woman at 75 who carries her own bags, lifts her grandchildren, hikes with her friends, and moves through the world with power.

What to do starting today

The most important things for bone health that you can start now without any equipment or any money.

1. Lift heavy things. Resistance training is one of the most direct stimulants of bone formation. When you put mechanical stress on bone it responds by getting stronger. This is not optional at this stage of life. It is as important as anything else you do for your health.

2. Walk after your biggest meal. A brisk 45-minute walk after dinner pushes glucose from your meal into your muscles instead of spiking your blood sugar, begins building the cardiovascular foundation that supports bone health, and costs you nothing. Do it for seven days in a row. Start a streak. The streak will do the rest.

3. Eat enough. Undereating is a bone poison. If you are restricting calories significantly your body is in a state of relative energy deficiency and it will sacrifice bone density to keep other systems running. Adequate protein, adequate calories, and adequate calcium and vitamin D are non-negotiable.

4. Know your numbers. Ask your doctor for a baseline DEXA scan. Ask specifically about your bone density history and your family history. If you are in perimenopause or menopause and have not had a conversation about what hormone therapy could mean for your bone health, have that conversation now.

The thing I keep coming back to

Only 10 to 30% of how you age is determined by your genetics. The remaining 70 to 90% comes from the decisions you make. A single walk changes the expression of approximately 9,800 proteins in your body. Your bones respond to what you give them at every age.

You are not destined to live the way your grandmother lived. You can change the trajectory, and the earlier you start the more bone you have to work with.

The best time to start thinking about your bones was twenty years ago. The second best time is right now.

Listen to The Longevity Doctor: The 8 Simple Tests That Predict How You'll Age here or you can watch it here.

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