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What women need to understand about nutrients, supplements, and real fracture prevention
In this episode of the Stronger Bones Lifestyle Podcast, I spoke with Dr. John Neustadt, naturopathic doctor, researcher, and author of Fracture-Proof Your Bones. And this conversation was incredibly important because it cuts through one of the biggest areas of confusion in bone health: supplements.
Women are overwhelmed.
They’re told to take calcium, vitamin D, collagen, magnesium, strontium, vitamin K… and often nobody explains what actually matters when it comes to reducing fracture risk.
So we talked about the science behind nutrients and what research truly shows helps support stronger, fracture-resistant bones.
Bone Density Is Not the Goal
One of the most important things Dr. Neustadt emphasized is this:
The goal is not simply increasing bone density.
The goal is reducing fractures.
And those are not always the same thing.
We discussed how many supplements and even medications are marketed based on their ability to improve a DEXA score — but improving bone density does not automatically mean bones are stronger or less likely to break.
That distinction matters.
The Four Nutrients With Fracture Research
According to Dr. Neustadt, only four nutrients have clinical trial evidence showing reduction in fractures:
- Calcium
- Vitamin D3
- Vitamin K2 (specifically MK-4)
- Strontium ranelate (used in Europe)
But there’s nuance here.
He explained that most women likely do not need massive amounts of calcium supplements because calcium intake also comes from food. More is not always better, and excessive calcium intake may create risks.
He also clarified something I know many women are confused about:
Not all vitamin K2 is the same.
The form with the strongest fracture research is MK-4, not MK-7. MK-4 has been studied extensively in Japan and repeatedly shown to reduce fractures in clinical trials.
Why I’m Cautious About Strontium
This was one of the most important parts of our conversation.
Many bone supplements marketed today contain strontium because it can improve DEXA scan results. But Dr. Neustadt explained that strontium is heavier than calcium, which can artificially alter the way the DEXA scan reads bone density.
In other words:
Your scan may look better without necessarily proving your bones are more fracture-resistant.
That’s why I continue to encourage women to focus less on chasing density numbers and more on building truly resilient bones through lifestyle, movement, nutrition, gut health, and metabolic balance.
The Gut–Bone Connection Matters
One thing I appreciated about this conversation is that we didn’t just stay focused on supplements.
We also talked about digestion, inflammation, food sensitivities, and the microbiome.
If your gut is inflamed or you’re not absorbing nutrients properly, your bones suffer. Chronic gut inflammation impacts the entire body — including bone remodeling and fracture risk.
This is why I place so much emphasis on healing the gut first.
My Takeaway
If there’s one thing I want women to understand, it’s this:
You cannot supplement your way out of an unhealthy lifestyle.
Supplements can support the body — but the real foundation of strong bones comes from:
- Nutrition
- Movement
- Sleep
- Hormonal balance
- Gut health
- Stress management
- Fall prevention
Your bones are living tissue.
And when you support the whole body, you support your bones.
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Frequently Asked Questions (FAQs)
Oxalates, also known as oxalic acid, are naturally occurring compounds found in many plants, vegetables, and fruits. They are part of a plant’s defense mechanism against predators and can be found in high concentrations in foods like spinach, rhubarb, beets, nuts, chocolate, tea, and certain beans.
Regarding bone health, oxalates can bind to minerals such as calcium in the gut, forming calcium oxalate. This compound is not easily absorbed by the body, meaning the calcium that could have been utilized for bone strengthening is instead excreted. This process can potentially lead to lower calcium availability for bone health, which can be particularly concerning for individuals at risk of osteoporosis or other bone-related issues.
However, for most women, dietary oxalates do not pose a significant threat to bone health, especially if their diet is balanced with enough calcium and they do not have a history of kidney stones.
Your gut is crucial for stronger bones for several reasons:
- Nutrient Absorption: The gut is where most nutrient absorption occurs. For bones to be healthy and strong, they need a variety of nutrients, particularly calcium, phosphorus, magnesium, and vitamin D. A healthy gut efficiently absorbs these essential nutrients from your diet and facilitates their transportation to the bones.
- Gut Microbiome and Bone Health: Research has shown that the gut microbiome (the community of bacteria living in your intestines) can influence bone density. Certain gut bacteria help in producing short-chain fatty acids (SCFAs) like butyrate, which have been shown to promote bone health. SCFAs can enhance the absorption of minerals necessary for bone strength and play a role in reducing inflammation, which can negatively affect bone health.
- Hormone Regulation: The gut helps regulate hormones that are involved in bone metabolism, including insulin, thyroid hormones, and sex hormones like estrogen. For example, estrogen is vital for bone density, and gut health can influence estrogen levels through the enterohepatic circulation, where estrogens are processed in the liver and intestines.
- Reducing Inflammation: Chronic inflammation, which can stem from poor gut health, is linked to many conditions that compromise bone strength, such as osteoporosis. A healthy gut helps to reduce systemic inflammation, protecting bones from inflammatory damage.
- Immune System Modulation: The majority of the immune system is located in the gut. An imbalance in the immune system can lead to autoimmune conditions, some of which affect the bones. Maintaining gut health helps to ensure the immune system works correctly, protecting against autoimmune reactions that could impact bone health.
In essence, maintaining a healthy gut contributes significantly to stronger bones by ensuring the effective absorption of vital nutrients, regulating hormones, reducing inflammation, and supporting a healthy immune system. Therefore, a diet rich in bone-healthy nutrients, prebiotics, and probiotics, along with lifestyle factors that promote gut health, is key to maintaining strong bones.