For decades, people believed that their long-term health — including whether they would develop osteoporosis — was largely predetermined by their genetic inheritance. “My mother had it, so I will too” is something we hear often at OsteoStrong®.
But today science tells a very different story.
Genes vs. Environment: What the Genome Project Really Revealed
Before the Human Genome Project was completed, many scientists expected it would identify the genetic origins of most major diseases, including osteoporosis.
But unfortunately it didn’t.
Instead, the project revealed the opposite. We now know that:
- Genes account for only ~10% of breast cancer risk.
- Around 20% of COPD, rheumatoid arthritis, and heart disease.
- And while genes influence bone shape and density at birth, they do not determine who will develop osteoporosis later in life.
- Genes account for 20–30% of osteoporosis, while 70–80% is a result of epigenetic factors – nutrition, lifestyle and environment.
As former US National Institute of Health Director Francis Collins summarised “genetics loads the gun, but environment pulls the trigger”.
This discovery shifted the focus of disease study from genetics to epigenetics — the way lifestyle, environment, stress, sleep, nutrition, and toxins turn genes “on” or “off.”
Crucially: epigenetics is modifiable.
Epigenetics: How Your Choices Shape Your Biology
Your epigenetics are driven by three major influences:
- Lifestyle – movement, exercise, sleep, stress, sunlight
- Nutrition – whole foods, micronutrients, protein, gut health
- Environment – toxins, chemicals, plastics, pollutants, air quality
These three factors have a far greater impact on ageing, bone health, and disease risk than the genes you were born with.
What People Who Understand Epigenetics Actually Do
Scientists and clinicians who work with epigenetic research don’t try to eliminate every toxin — they simply reduce exposures while building a strong, resilient biology.
They typically:
- exercise regularly (strength, aerobic, HIIT)
- filter their drinking water
- use air purifiers
- avoid heating food in plastic
- choose fragrance-free products
- avoid processed foods and seed oils
- minimise eating out of plastic
- choose organic produce when possible
These are simple strategies that we can all follow.
Importantly they actively manage their exposome: the total sum of environmental exposures from womb to casket.
In the world’s Blue Zones, this is simply normal life. People grow food, cook fresh meals, avoid chemicals and processed foods, and stay active — unintentionally protecting their epigenetics for decades which allows them to live longer in good health.
The Chemical Landscape: A Global Problem, With Australian Context
The modern chemical environment has changed dramatically:
- The US has 350,000 chemicals in circulation, yet only 1% have been tested for safety and has banned less than 15.
- The EU, by contrast, has banned over 2,000 under REACH regulations.
- Australia’s chemical regulatory system is significantly more permissive than the EU and bans only a small fraction of the chemicals restricted in Europe. The EPA has banned only about a dozen.
Australia sits between the US and Europe: not the most permissive, but far from the strictest.
This matters because toxins influence metabolic and bone health through:
- hormone disruption
- inflammation
- gut dysbiosis
- impaired calcium and vitamin D metabolism
- oxidative stress affecting bone turnover
These effects accumulate over years, increasing vulnerability to osteoporosis, sarcopenia, falls, and fractures.
So What Matters Most? Your Daily Choices.
The evidence is clear:
- Your genes shape potential, not destiny.
- Your lifestyle, nutrition, and environment determine whether that potential becomes disease or resilience.
- Bone and muscle health are especially sensitive to these factors.
And this is where you have control.
Live Longer, Live Stronger
Protecting your musculoskeletal health — and your longevity — is not about perfect genes or luck. It’s about building a lifestyle that strengthens your biology and reduces the burdens that weaken it.
An active, mobile life incorporating osteogenic loading through programs like OsteoStrong®, combined with nutrient-dense nutrition and sensible reduction of environmental and lifestyle toxins, is the most effective way to preserve bone density, build muscle strength, and support the biological systems that keep you living longer and stronger.
Your genes may load the gun, but your daily choices determine the outcome.
