What Too Much Junk Food Could Be Doing to Your Bones

We already know that ultra-processed foods (UPFs) aren’t doing our hearts or waistlines any favors. But a new study suggests that the “crunch” in your diet might be affecting the strength of your skeleton. Beyond the well-documented risks of heart disease and diabetes, researchers are now sounding the alarm on a new target: our bone health.

What the Study Shows

Researchers analyzed diet and health data from more than 160,000 participants in the UK, following them for over 12 years.

On average, participants consumed about eight servings of ultra-processed foods a day.

For every additional 3.7 servings  — roughly a frozen dinner, a cookie and a soda — hip fracture risk increased by about 10.5 percent, according to the results.

Significant reductions in bone mineral density were found in key areas of the hip and lower spine.

One author says, “Our results are not surprising. Ultra-processed foods have been consistently associated with various nutrition-related disorders and bone health depends on proper nutrition.”

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Ultra-processed foods are industrially manufactured and often high in salt, sweeteners and unhealthy fats, while containing few whole foods.

As of 2023, they accounted for approximately 55 percent of total calories consumed by children and young adults. 

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What Junk Foods Should You Avoid?

Ultra-processed or “junk food” refers to items that are high in calories but low in actual nutrition. If you are already focusing on heart health, managing cholesterol, or navigating inflammatory conditions, certain “ultra-processed” categories are more impactful than others.

Here are the primary types of junk food to watch out for, along with why they can be tricky:

1. High-Sodium “Convenience” Foods

Many processed foods use salt as a preservative and flavor enhancer. For those keeping an eye on blood pressure or arterial health, these are the biggest culprits:

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• Frozen Meals & Pizzas: These are often “sodium bombs,” sometimes containing a full day’s worth of salt in one serving.
• Canned Soups & Sauces: Even the “healthy” looking ones can be surprisingly high in sodium.
• Deli Meats & Cold Cuts: Processed meats are often cured with high amounts of salt and nitrates.

2. Foods with Industrial “Trans Fats”

While many countries have banned added trans fats (partially hydrogenated oils), they still hide in some processed snacks. These are particularly hard on LDL cholesterol levels:

• Commercial Baked Goods: Think packaged donuts, pie crusts, and some crackers.
• Non-Dairy Creamers: Some powdered versions still contain shelf-stabilizing fats that aren’t heart-friendly.
• Fried Fast Foods: Often cooked in oils that are reused at high temperatures, which can increase inflammatory markers.

3. High-Sugar & Refined Carb Snacks

For those managing systemic inflammation or metabolic health, spikes in blood sugar can be a major trigger:

• Sugary Sodas and “Juice” Drinks: These provide a massive glucose spike without any fiber to slow it down.
• White Flour Snacks: Pretzels and white-bread crackers turn into sugar in the body almost instantly.
• Candy and Corn Syrup Sweets: These can contribute to weight gain and fatty liver, further complicating heart health.

4. High-Phosphate Additives

Interestingly, many processed foods contain phosphorus additives to improve texture or shelf life. Recent research suggests these might interfere with calcium balance, which is vital for both bone and kidney health.

• Dark Colas: These often contain phosphoric acid.
• Processed Cheese Slices: These often use phosphate salts to make them melt smoothly.

What to Eat Instead

A good way to begin eliminating junk food from your diet is by starting with healthier alternatives. Here are a few simple swaps you can try:

• Instead of Potato Chips: Try air-popped popcorn (seasoned with herbs or nutritional yeast instead of salt).
• Instead of Sugary Cereal: Try oatmeal topped with fresh berries and walnuts.
• Instead of Soda: Try sparkling water with a squeeze of fresh lime or lemon.

The convenience of a frozen dinner or a quick soda may come at a hidden cost to our structural integrity. With UPFs making up over half of the calories in younger diets, the long-term impact on skeletal health could be a brewing public health crisis. The message from researchers is clear: to keep your bones strong, it’s time to look past the packaging and get back to whole foods.