Are Ultra-Processed Foods Bad for You? The Science Behind Longevity, Gut Health & Disease Risk

Ultra-Processed Foods, Longevity & Metabolic Health: What the Latest Science Says About Healthy Ageing

How Diet Quality Influences Lifespan, Healthspan, Inflammation and Metabolic Health

If you're trying to improve your health, increase lifespan, and reduce your risk of chronic disease, one of the most important factors isn't a specific diet trend—

👉 it's how processed your food is.

Emerging research consistently links high intakes of ultra-processed foods with poorer metabolic health, increased inflammation, cardiovascular disease, type 2 diabetes, obesity, and reduced longevity.

At the same time, dietary patterns rich in whole, minimally processed foods continue to be associated with healthier ageing, better metabolic function, improved quality of life and lower disease risk.

The good news?

You don't need an extreme diet.

The strongest evidence supports a return to simple, nutrient-dense foods that humans have eaten for generations.

This guide explores:

✔ What ultra-processed foods are

✔ How they affect longevity and healthspan

✔ What metabolomics reveals about disease risk

✔ Why gut health matters

✔ How whole foods support metabolic health

✔ Practical strategies and recipes

✔ Where bone broth fits into a healthy ageing lifestyle

What Are Ultra-Processed Foods?

Ultra-processed foods are industrially manufactured products made largely from refined ingredients and additives rather than whole foods.

They often contain:

Refined starches
Added sugars
Refined vegetable oils
Artificial flavours
Colourings
Emulsifiers
Preservatives

Examples include:

Soft drinks
Sugary cereals
Packaged snack foods
Fast food
Confectionery
Highly processed convenience meals

These foods are often designed for:

Long shelf life
Convenience
Hyper-palatability

While convenient, they are generally less nutrient-dense than minimally processed foods.

Why Diet Matters More Than Ever

For decades, nutrition conversations focused largely on weight and calorie intake.

Today, researchers are increasingly interested in:

Lifespan

How long we live.

Healthspan

How many of those years are spent healthy, active, mobile and independent.

The goal isn't simply living longer.

It's maintaining:

Strength
Mobility
Cognitive function
Metabolic health
Independence
Quality of life

throughout the ageing process.

Nutrition plays a major role in both lifespan and healthspan.

What the Latest Science Says About Ultra-Processed Foods

Large population studies consistently show that higher intakes of ultra-processed foods are associated with:

Increased obesity risk
Poor metabolic health
Higher rates of type 2 diabetes
Increased cardiovascular disease risk
Greater mortality risk

Researchers increasingly believe that dietary quality may be one of the most important modifiable factors influencing long-term health outcomes.

This doesn't mean a single processed meal causes disease.

Rather, it is the cumulative effect of dietary patterns over years and decades that matters most.

Why Ultra-Processed Foods May Reduce Longevity

1. Appetite Dysregulation

Ultra-processed foods are often easy to consume quickly and may be less satiating than whole foods.

This can contribute to:

Increased calorie intake
Frequent snacking
Poor appetite regulation

By contrast, meals rich in protein, fibre and healthy fats tend to support fullness and satisfaction.

Why Ultra-Processed Foods Matter Even More for Children

Children today are growing up in a food environment unlike any previous generation.

Many children's diets now contain significant amounts of ultra-processed foods, including:

Sugary breakfast cereals
Packaged snack foods
Sweetened yoghurts
Soft drinks and juices
Fast food meals
Confectionery
Highly processed convenience foods

While these foods are often convenient, researchers continue to investigate how dietary quality during childhood influences long-term health outcomes.

Childhood Nutrition Shapes Lifelong Health

The early years are a critical period for growth and development.

Children require adequate nutrition to support:

Brain development
Bone growth
Muscle development
Immune function
Healthy eating behaviours

Nutrition habits established during childhood often continue into adulthood.

This means that improving diet quality early may have long-term benefits for health and wellbeing.

Ultra-Processed Foods and Children's Health

Research has associated higher intakes of ultra-processed foods in children with:

Lower dietary quality
Reduced intake of important nutrients
Higher calorie consumption
Increased risk of excess weight gain

Because many ultra-processed foods are highly palatable and heavily marketed toward children, they can displace more nutrient-dense foods such as:

Vegetables
Fruit
Whole grains
Protein-rich foods

Over time this may reduce dietary variety and nutrient intake.

The Impact on Appetite and Food Preferences

One concern with ultra-processed foods is how they influence taste preferences.

Children naturally develop food preferences based on repeated exposure.

When diets are dominated by highly sweetened or heavily flavoured foods, children may become less willing to eat:

Vegetables
Whole foods
Less intensely flavoured foods

This can make building healthy eating habits more challenging.

The good news is that taste preferences can change.

Repeated exposure to whole foods helps children gradually learn to enjoy a wider variety of flavours.

The Gut Microbiome Begins Early

Childhood is also an important period for developing a healthy gut microbiome.

Dietary diversity supports the growth of beneficial gut bacteria.

Foods that support microbiome diversity include:

Vegetables
Fruit
Legumes
Whole grains
Fibre-rich foods

A diverse diet helps create a healthier internal environment and supports digestive wellbeing.

Building Better Habits Without Restriction

Healthy eating for children is not about perfection.

It is about creating a positive food environment that encourages:

Variety
Balance
Whole foods
Consistency

Simple strategies include:

✔ Including vegetables regularly

✔ Offering fruit as snacks

✔ Encouraging family meals

✔ Prioritising protein-rich foods

✔ Reducing reliance on highly processed snacks

✔ Introducing new foods repeatedly without pressure

Small improvements made consistently can have a meaningful impact over time.

Practical Whole-Food Ideas for Children

Simple family-friendly options include:

Rainbow Smoothie

Blend:

Frozen berries
Banana
Spinach
Milk of choice

Hidden Veggie Pasta Sauce

Add:

Carrot
Pumpkin
Zucchini

to tomato-based sauces.

Vegetable-Packed Soup

Use:

Bone broth
Carrot
Celery
Pumpkin
Chicken

for a nutrient-dense family meal.

Easy Lunchbox Ideas

Boiled eggs
Fresh fruit
Cheese
Vegetable sticks
Homemade muffins
Hummus

These options provide more nutritional value than many packaged snack foods.

The Bigger Picture

Healthy eating habits developed during childhood can influence health for decades.

Rather than focusing on restriction, the goal is to help children develop a positive relationship with real food.

By increasing whole foods and reducing reliance on ultra-processed products, families can support:

Growth and development
Dietary quality
Healthy eating habits
Long-term wellbeing

Because healthy ageing doesn't start at 50—

👉 it starts in childhood.

2. Poor Metabolic Health

Many ultra-processed foods are:

High in refined carbohydrates
Low in fibre
Rapidly digested

This can contribute to:

Blood sugar fluctuations
Increased hunger
Reduced energy stability

Over time, poor metabolic health is linked to:

Insulin resistance
Type 2 diabetes
Cardiovascular disease

3. Chronic Inflammation

Chronic low-grade inflammation is increasingly recognised as a contributor to many modern health conditions.

Dietary patterns rich in:

Vegetables
Fruit
Healthy fats
Quality protein

are generally associated with lower inflammatory markers.

In contrast, diets heavily reliant on ultra-processed foods are often associated with poorer inflammatory profiles.

4. Reduced Nutrient Density

Many ultra-processed foods provide calories but relatively few:

Vitamins
Minerals
Fibre
Phytonutrients

This can affect overall dietary quality and nutritional adequacy.

A Metabolomics Perspective: Food Is Information

One of the most exciting areas of modern nutrition research is metabolomics.

Metabolomics studies metabolites—small molecules produced during metabolism.

These provide insight into:

Glucose regulation
Lipid metabolism
Inflammation
Nutrient utilisation
Cellular energy production

Unlike traditional markers that examine a single measurement, metabolomics provides a broader snapshot of metabolic health.

Researchers are increasingly using metabolomics to understand how dietary patterns influence disease risk and healthy ageing.

In simple terms:

👉 Every meal sends biological signals throughout the body.

Food influences:

Hormones
Immune function
Metabolism
Gene expression
Gut microbiome activity

This is why dietary quality matters far beyond calorie intake alone.

The Common Root Causes of Modern Disease

Many chronic diseases share similar underlying drivers.

These include:

Insulin resistance
Chronic inflammation
Oxidative stress
Poor gut health
Physical inactivity
Loss of muscle mass

This explains why cardiovascular disease, type 2 diabetes and metabolic dysfunction often occur together.

Supporting metabolic health early may help reduce long-term disease risk.

The Gut Microbiome and Longevity

The gut microbiome influences:

Digestion
Nutrient absorption
Immune function
Metabolic health

Research continues to show that dietary diversity is one of the strongest drivers of microbiome diversity.

Foods that support microbiome health include:

Vegetables
Fruit
Legumes
Whole grains
Fermented foods
Traditional whole foods

A healthy microbiome is increasingly recognised as an important component of healthy ageing.

What Foods Support Healthy Ageing?

Across many populations known for exceptional longevity, similar dietary patterns emerge.

Vegetables

Rich in:

Fibre
Vitamins
Minerals
Polyphenols

Fruit

Provides:

Antioxidants
Phytonutrients
Fibre

Protein-Rich Foods

Support:

Muscle maintenance
Recovery
Healthy ageing

Examples include:

Fish
Eggs
Poultry
Meat
Bone broth

Healthy Fats

Support:

Cardiovascular health
Cell membranes
Hormonal function

Sources include:

Olive oil
Nuts
Seeds
Avocados

Legumes

Provide:

Fibre
Plant protein
Micronutrients

Herbs and Spices

Add dietary diversity and valuable plant compounds.

Returning to Traditional Foods

Many traditional dietary patterns share common features.

These include:

Soups
Stews
Slow-cooked meals
Fermented foods
Bone broth

These foods often provide nutrition in forms that fit naturally into balanced eating patterns.

Traditional foods continue to have relevance in modern nutrition because they are:

Nutrient dense
Versatile
Easy to incorporate consistently

Where Bone Broth Fits Into a Longevity Diet

Bone broth is a traditional food that aligns well with whole-food nutrition principles.

Broth & Co Bone Broth provides approximately 5g of naturally occurring protein per serve together with collagen-derived amino acids including:

Glycine
Proline
Glutamine
Hydroxyproline

Many people include bone broth in nutrition routines focused on:

Digestive wellbeing
Protein intake
Recovery
Active lifestyles
Healthy ageing

Bone broth can be enjoyed:

As a warm drink
In soups
In stews
As a cooking ingredient

The Broth & Co Gut Health Study

Broth & Co conducted an Australian study investigating daily bone broth consumption over eight weeks.

Participants demonstrated improvements in:

Digestive wellbeing
Gastrointestinal symptoms
Quality of life measures
Markers associated with intestinal permeability

including improvements in the mannitol:lactulose ratio, a commonly used marker associated with gut barrier function.

While additional research is needed, these findings contribute to growing interest in how traditional nutrient-dense foods may fit into broader digestive wellbeing strategies.

Real Whole-Food Recipes for Longevity & Lifelong Health

These recipes are built around the dietary patterns consistently associated with better metabolic health, gut health, healthy ageing, and reduced reliance on ultra-processed foods.

Mediterranean Salmon & Lentil Bowl

Rich in protein, fibre, omega-3 fats and polyphenols.

Serves 2

Ingredients

2 salmon fillets (150g each)
1 cup cooked lentils
2 cups baby spinach
1 cucumber, diced
1 cup cherry tomatoes, halved
¼ red onion, sliced
1 tbsp extra virgin olive oil
Juice of ½ lemon
Salt and pepper

Method

Season salmon with salt and pepper.
Bake at 200°C for 12–15 minutes.
Combine lentils, spinach, cucumber, tomatoes and onion.
Drizzle with olive oil and lemon juice.
Top with salmon and serve.

Why it supports longevity

✔ Protein for muscle maintenance

✔ Fibre for gut health

✔ Omega-3 fats for cardiovascular health

✔ Polyphenols from vegetables

Gut-Friendly Bone Broth Vegetable Soup

A simple whole-food family meal.

Serves 4

Ingredients

1 litre Broth & Co bone broth
2 carrots, diced
2 celery stalks, diced
1 zucchini, diced
1 onion, diced
2 cloves garlic, crushed
2 cups shredded chicken
2 handfuls baby spinach
Fresh parsley

Method

Sauté onion and garlic in olive oil.
Add carrot, celery and zucchini.
Pour in bone broth.
Simmer 20 minutes.
Add chicken and spinach.
Cook another 5 minutes.
Garnish with parsley.

Why it supports longevity

✔ Protein

✔ Vegetables

✔ Hydration

✔ Dietary variety

✔ Collagen-derived amino acids

Blue Zone Bean Stew

Inspired by dietary patterns observed in long-lived populations.

Serves 4

Ingredients

2 cans cannellini beans
1 onion, diced
2 carrots, diced
2 celery stalks, diced
1 zucchini, diced
400g crushed tomatoes
3 cups bone broth
2 tsp oregano
Fresh parsley

Method

Cook onion, carrot and celery for 5 minutes.
Add zucchini and oregano.
Add tomatoes, beans and broth.
Simmer 30 minutes.
Top with parsley.

Why it supports longevity

✔ High fibre

✔ Plant diversity

✔ Protein

✔ Supports microbiome health

Hidden Veggie Bolognese (Kid-Friendly)

A practical way to reduce reliance on ultra-processed family meals.

Serves 6

Ingredients

500g lean beef mince
1 onion
2 carrots
1 zucchini
1 cup pumpkin
700ml tomato passata
2 cups bone broth

Method

Blend carrots, zucchini and pumpkin.
Brown beef and onion.
Add vegetables.
Add passata and broth.
Simmer 45 minutes.
Serve with wholegrain pasta.

Why it supports kids

✔ More vegetables

✔ Protein

✔ Familiar flavour

✔ Supports dietary variety

Longevity Breakfast Bowl

A better alternative to sugary cereals.

Serves 1

Ingredients

200g Greek yoghurt
½ cup blueberries
1 tbsp chia seeds
1 tbsp walnuts
Cinnamon

Method

Combine all ingredients and serve.

Why it supports longevity

✔ Protein

✔ Fibre

✔ Healthy fats

✔ Polyphenols

Family Roast Tray Bake

Simple whole-food dinner.

Serves 4

Ingredients

4 chicken thighs
2 sweet potatoes
2 carrots
1 red capsicum
1 zucchini
Olive oil
Rosemary

Method

Chop vegetables.
Toss with olive oil and rosemary.
Place chicken on top.
Bake at 200°C for 40–45 minutes.

Why it supports longevity

✔ Protein

✔ Vegetables

✔ Minimal processing

✔ Easy family meal

Evening Bone Broth Recovery Cup

A simple replacement for processed evening snacks.

Serves 1

Ingredients

1 cup Broth & Co bone broth
½ tsp grated ginger
Pinch turmeric
Cracked black pepper

Method

Warm gently and drink.

Why it supports longevity

✔ Hydration

✔ Protein

✔ Supports daily nutrient intake

✔ Easy habit replacement

Five Practical Ways to Reduce Ultra-Processed Foods

1. Replace Rather Than Restrict

Swap:

Soft drinks → sparkling water
Packaged snacks → fruit
Processed treats → nuts

2. Prioritise Protein

Build meals around:

Fish
Eggs
Poultry
Meat
Bone broth

3. Increase Dietary Variety

Aim to include:

More vegetables
Different fruits
Herbs and spices
Diverse protein sources

4. Cook More Often

Simple meals prepared at home are often less processed and more nutrient dense.

5. Focus on Consistency

Long-term dietary habits matter more than occasional indulgences.

The Bigger Picture

Whether researchers study:

Healthy ageing
Longevity
Metabolic health
Gut health
Cardiovascular disease

the same themes repeatedly emerge:

✔ More whole foods

✔ More dietary diversity

✔ More vegetables

✔ More protein

✔ More fibre

✔ Less reliance on ultra-processed foods

✔ Consistent lifestyle habits

Healthy ageing isn't built through perfection.

It's built through daily choices repeated over time.

Frequently Asked Questions

Are ultra-processed foods bad for you?

Ultra-processed foods exist on a spectrum. However, dietary patterns high in ultra-processed foods are consistently associated with poorer metabolic health and increased chronic disease risk.

What foods are most associated with longevity?

Dietary patterns rich in vegetables, fruit, legumes, healthy fats, quality protein and minimally processed foods are commonly associated with healthy ageing and longevity.

What is healthspan?

Healthspan refers to the number of years spent in good health while maintaining mobility, independence and quality of life.

What is metabolomics?

Metabolomics is the study of metabolites produced during metabolism. It provides insight into metabolic health, nutrient utilisation and disease risk.

Can bone broth be included in a healthy diet?

Yes. Bone broth provides naturally occurring protein and collagen-derived amino acids and can be incorporated into balanced dietary patterns.

How often should you drink bone broth?

Many people choose to enjoy bone broth daily as part of their overall nutrition routine.

Does reducing ultra-processed foods improve health?

Research consistently shows that dietary patterns focused on whole foods are associated with better metabolic health, improved diet quality and healthier ageing outcomes.

Final Thoughts

The latest nutrition science continues to reinforce a remarkably simple message:

👉 Diet quality matters.

Rather than chasing short-term diet trends, the strongest foundations for long-term wellbeing remain:

Whole-food nutrition
Adequate protein intake
Dietary diversity
Gut health
Physical activity
Sleep
Consistent habits

By gradually reducing reliance on ultra-processed foods and increasing nutrient-dense whole foods, you can build a dietary pattern that supports healthy ageing, metabolic health and quality of life for years to come.

At Broth & Co, we believe that simple, nourishing foods and sustainable habits provide the strongest foundation for lifelong wellbeing.

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