Building Strong Bones: How Strength Training, Nutrition, and Muscle Protect You for Life

Why bone health is about more than calcium—and why building strength now matters later.

BMF Training | Alexandra Rodriguez

A hip fracture can sound like something we do not need to worry about until much later in life.

But the consequences can be serious.

A recent review published in JAMA found that the median one-year mortality rate following a hip fracture is about 22%, and only about 42–71% of people regain their previous level of basic daily function within six months.

That statistic really stuck with me.

Because bone health is about so much more than osteoporosis or a number on a bone-density scan.

It is about building and maintaining enough bone, muscle, strength, power, balance, and physical capacity to help prevent a fall in the first place, withstand stress when it happens, recover afterward, and continue living independently.

And that process starts long before old age.

I recently took a deeper dive into osteoporosis and bone health through a mastery class, and it made me think even more about the way we approach training and nutrition at BMF.

Right now, so much of the health and fitness world is focused on getting smaller.

Lose weight.
Cut calories.
Get leaner.
Reduce body fat.

There is absolutely nothing wrong with wanting to improve body composition. But when that becomes our only measure of progress, we leave out an important question:

Are we building a body that can actually support us for the rest of our lives?

At BMF, we say that “Everyone deserves to be an athlete.”

Part of that means building enough muscle, bone strength, balance, and physical capacity to continue doing the things you love as you age.

Bone Is Living Tissue

Our skeleton is not a fixed structure.

Bone is living tissue that is constantly being broken down and rebuilt through a process called remodeling.

Cells called osteoclasts help break down older bone, while osteoblasts help form new bone. When bone breakdown consistently exceeds bone formation over time, bone density and strength can decline.

Age plays a role, but it is far from the only factor.

Bone health is influenced by:

• Mechanical loading

• Nutrition

• Hormones

• Medications

• Medical conditions

• Energy availability

• Muscle mass

• Physical activity

One phrase from my notes that I loved was:

“What’s loaded is what grows.”

It is a simple way of describing an important concept: bone responds to mechanical stress.

If we want the skeleton to remain strong, we need to give it an appropriate reason to adapt.

The key word there is appropriate.

More load is not automatically better. The amount and type of stress need to match the individual, their training experience, medical history, fracture history, and current abilities.

1. Load the Body

Why Strength Training Matters for Bone

Bone adaptation is somewhat site-specific.

In other words, the areas we meaningfully load are the areas that receive a reason to adapt.

That is one reason movements such as:

• Squats

• Hinges

• Step-ups

• Lunges

• Carries

• Presses

• Pulls

can be so valuable.

Sound familiar? 😉

Exercises like leg extensions and hamstring curls can absolutely help build muscle, but they do not challenge the body in the same way as progressively loading larger movement patterns.

Walking is also incredibly beneficial.

I encourage walking all the time for cardiovascular health, daily activity, mental health, and overall wellness.

But progressive resistance training and appropriately higher-loading exercise generally provide a stronger stimulus for building and maintaining bone than walking alone.

What does the research show?

One of the studies I found especially interesting was the LIFTMOR trial.

Researchers studied 101 postmenopausal women with low bone mass and compared a supervised high-intensity resistance and impact program with a lower-intensity home exercise program over eight months.

The supervised group trained twice per week for about 30 minutes and performed heavy resistance work at greater than 85% of their one-rep max.

At the end of the study, lumbar-spine bone mineral density increased by approximately 2.9% in the training group while decreasing by around 1.2% in the comparison group.

That is pretty incredible.

But this does not mean someone with osteoporosis should walk into a gym tomorrow and start lifting 85% of their max.

These women were screened, progressed appropriately, and closely supervised.

Previous fractures, fall risk, training experience, health conditions, and movement ability all matter.

The lesson is not “everyone needs to lift extremely heavy.”

The lesson is that we should not automatically assume that getting older or having low bone density means the body should stop being challenged.

Appropriately progressed resistance training can be part of the solution.

Strength Is Important—But So Is Power

We also cannot forget about power.

Strength is our ability to produce force.

Power is our ability to produce that force quickly.

Imagine tripping over a curb.

You do not have several seconds to slowly think about how you are going to regain your balance.

You need to react.

You need to take a quick step, produce force, stabilize yourself, and hopefully prevent the fall entirely.

That is where strength, power, balance, gait, and coordination start to connect directly to fracture prevention.

Bone health is not just about making bones stronger.

It is also about building a body that has more options when something goes wrong.

2. Fuel the Body

Training gives the body a reason to adapt.

Nutrition gives it the resources to do so.

You can create an amazing training stimulus, but the body still needs enough energy, protein, vitamins, and minerals to actually respond.

This is one part of the bone-health conversation I think gets overlooked the most.

We live in a culture constantly telling us to eat less.

But chronic dieting and low energy availability can work against our goals of maintaining muscle and bone.

This is especially important in athletes and younger people who are still building peak bone mass.

Low energy availability can also disrupt reproductive hormones. In athletes, losing a menstrual cycle should not automatically be viewed as a sign that someone is simply “really fit.”

Menstrual dysfunction can be one sign of Relative Energy Deficiency in Sport, or RED-S, which can affect bone development, performance, recovery, and injury risk.

Muscle and bone are metabolically expensive tissues.

If we want the body to build and maintain them, we have to give it enough resources to do so.

Protein Is Part of Bone Health Too

When people think about nutrition for bones, calcium usually gets most of the attention.

But bone is not made from calcium alone.

Bone contains an organic matrix made largely from collagen proteins, with minerals deposited into that framework.

Protein helps support the structure of bone while also helping us maintain and build muscle.

And muscle matters tremendously for long-term function.

Maintaining muscle helps us:

• Produce force

• Maintain balance

• Get up from the floor

• Carry things

• Climb stairs

• Recover from illness or injury

• Remain independent

For someone who strength trains, I would much rather see adequate protein consistently included throughout the day than treat bone health as simply adding a calcium supplement on top of an under-fueled diet.

Calcium: Food First When Possible

Calcium is still incredibly important because it is one of the major mineral components of bone.

The body also needs calcium for things like:

• Muscle contraction

• Nerve signaling

• Heart function

Because those functions are so important, the body tightly regulates calcium levels in the blood.

That also means a normal blood calcium value does not necessarily tell us how much calcium someone is consuming or how much is stored in their bones.

For most adults, the general calcium recommendation is around 1,000 mg per day, increasing to around 1,200 mg per day for women over 50 and men over 70.

Whenever possible, I like a food-first approach.

Calcium-rich foods can include:

• Yogurt

• Kefir

• Milk

• Cheese

• Calcium-set tofu

• Canned fish with edible bones

• Certain leafy greens

• Fortified foods

If someone consistently cannot meet their needs through food, supplementation may help fill the gap.

But more is not automatically better.

Vitamin D Helps Us Use Calcium

Vitamin D is closely connected to bone health because it helps the intestines absorb calcium.

General recommendations are approximately:

• 600 IU per day through age 70

• 800 IU per day after age 70

Individual needs can be different when someone has a deficiency, which is where testing and appropriate medical guidance become useful.

The goal should not be to chase the highest possible vitamin D number.

There is a difference between correcting a deficiency and assuming that more will always produce stronger bones.

Bone Needs More Than Calcium and Vitamin D

Calcium and vitamin D get most of the attention, but they are not the only nutrients involved in building and maintaining bone.

Nutrients such as:

• Magnesium

• Vitamin K

• Zinc

• Copper

• Manganese

all play roles in bone metabolism, connective tissue, mineralization, or other processes involved in maintaining healthy tissue.

But that does not mean everyone needs a separate supplement for every nutrient on that list.

That misses the bigger point.

A varied, nutrient-dense diet containing:

• Adequate protein

• Fruits and vegetables

• Dairy or other calcium-rich foods

• Whole grains

• Nuts and seeds

• Enough total calories

provides many of these nutrients together.

Supplements can be useful when there is a genuine gap or deficiency.

But a giant supplement stack cannot compensate for chronically under-eating.

The foundation still matters most:

Enough food. Enough protein. Enough calcium. Adequate vitamin D. Plenty of nutrient-dense foods.

3. Support the System

Sometimes there is more going on than simply training and nutrition.

Bone health is closely connected to our hormonal and medical environment.

For example, estrogen helps limit bone breakdown in both women and men, which is one reason bone loss can accelerate during and after menopause as estrogen levels decline.

Low testosterone may also contribute to bone loss in men.

Thyroid health matters as well. Hyperthyroidism or excessive thyroid-hormone replacement can increase bone turnover.

Certain gastrointestinal conditions, such as celiac disease or inflammatory bowel disease, may interfere with the digestion and absorption of nutrients important for bone.

A history of bariatric surgery, kidney disease, certain medications, and other medical conditions can also influence bone health.

So when someone seems to be doing “everything right” and still experiences significant bone loss or repeated fractures, we need to ask:

Why?

The answer may involve more than simply eating more calcium.

Nutrition, hormones, medications, medical conditions, and absorption can all matter.

What About Collagen, Prunes, K2, Creatine, and Other Supplements?

There are a lot of individual foods and supplements being researched for bone health.

You may hear about:

• Specific collagen peptides

• Prunes

• Vitamin K2

• Creatine

• Soy isoflavones

• Omega-3s

• Probiotics

Some of these areas have interesting research behind them.

But I still consider them secondary to the foundations.

No supplement can replace:

• Adequate energy intake

• Enough protein

• Sufficient calcium

• Adequate vitamin D

• Resistance training

• Regular physical activity

Nutrition becomes unnecessarily complicated when we start looking for the one supplement that is going to “build bone.”

The body is asking us to look at the entire environment.

4. Look Beyond Bone Density

Bone density is important.

A DXA scan can help identify low bone mass or osteoporosis and provide useful information about fracture risk.

But fracture risk is broader than a single number.

Two people could have similar bone density and very different overall risk depending on factors such as:

• Age

• Previous fractures

• Fall history

• Medications

• Medical conditions

• Muscle mass

• Strength

• Balance

• Gait

• Physical activity

Clinical tools such as FRAX can help estimate fracture risk by looking beyond bone density alone.

From a coaching perspective, I also want to know:

How strong is this person?

Can they confidently get up from the floor?

Can they carry something heavy?

How well do they walk?

Can they react quickly?

Have they fallen before?

How is their balance?

Do they have enough muscle to support themselves?

Because ultimately:

A stronger person with better balance has more options when something goes wrong.

Why I Don’t Want the Entire Health Conversation to Be About Getting Smaller

There is absolutely a place for fat-loss and body-composition goals.

For some people, losing excess body fat can significantly improve health and quality of life.

But I think the health and fitness industry has become so focused on weight loss that we sometimes forget to ask what else might be lost along the way.

Are we maintaining muscle?

Are we getting stronger?

Are we eating enough protein?

Are we supporting our hormones?

Are we consuming enough calcium and micronutrients?

Are we giving our bones a reason to stay strong?

Are we becoming more capable as we age?

The goal should not simply be to weigh less.

We should be building bodies that can handle life.

That is a big part of what “Everyone deserves to be an athlete” means to us at BMF.

It does not mean everyone needs to compete.

It does not mean being the strongest person in the gym.

It means building and maintaining enough:

Muscle.
Bone.
Strength.
Power.
Balance.
Resilience.

So you can continue doing the things you love for as long as possible.

The goal isn’t simply to weigh less.

The goal is to build a body that can handle life.

A Quick Note

If you have osteoporosis, a history of fragility fracture, or significant medical concerns related to bone health, training and nutrition recommendations should be individualized with the appropriate healthcare professional.

Strength training can be incredibly valuable, but the right starting point and progression should always match the person in front of us.

BMF Training | Alexandra Rodriguez