A practical Broth & Co guide to protein, resistance training, leucine, bone broth, collagen and muscle-supportive healthy ageing.

 

What Is Anabolic Resistance?

As we age, building and maintaining muscle can become harder. This does not mean strength loss is inevitable. It means the body may need stronger, more consistent signals from food and movement than it did earlier in life.

Anabolic resistance describes a reduced ability of muscle to respond to normal anabolic signals, especially dietary protein and resistance exercise. In simple terms, older muscle may need a stronger signal to achieve the same muscle-supporting response.

That stronger signal usually comes from two foundations: eating enough high-quality protein and performing regular resistance training. Together, these support muscle protein synthesis, strength, mobility, recovery and healthy ageing.

Protein Throughout Life: Why Your Protein Needs Change With Age explains why protein needs change across the lifespan.

Why Muscle Matters as We Age

Muscle is not just about appearance. It is one of the most important tissues for long-term health. Healthy muscle supports strength, mobility, balance, metabolic health, glucose disposal, physical independence, recovery and healthy ageing.

Muscle is also closely connected to metabolism. It is one of the main places glucose can be stored and used after meals, and it releases signalling molecules during movement that influence wider health.

This is why muscle-focused nutrition belongs in everyday wellness, not just sport or gym culture. Preserving muscle is one of the most practical ways to support quality of life across adulthood and later life.

Muscle, Metabolism & Lifelong Health: Why Muscle Matters at Every Age and Muscle as an Endocrine Organ: How Myokines Influence Metabolism, Inflammation & Healthy Ageing explore muscle as a metabolic organ.

How Muscle Protein Synthesis Works

Anabolism refers to the body's building processes. In muscle, this includes the creation of new muscle proteins through a process called muscle protein synthesis.

When we eat protein, amino acids enter the bloodstream and help stimulate muscle protein synthesis. When we perform resistance exercise, muscle receives another powerful signal to adapt and rebuild. In younger adults, muscle tissue often responds strongly to these signals. With age, that response can become blunted.

 

Amino Acids The Building Blocks gives more background on amino acids.

Why Does Anabolic Resistance Happen?

Anabolic resistance is influenced by several overlapping factors. These may include age-related changes in muscle biology, reduced physical activity, lower total protein intake, poor protein distribution across meals, inflammation, insulin resistance, hormonal changes, reduced appetite, illness, recovery periods and inadequate resistance training.

This is why the answer is rarely one supplement or one meal. The strongest approach is a whole-body strategy built around food, movement and consistency.

Insulin Resistance: Symptoms, Causes & How to Improve Insulin Sensitivity Naturally, Gut Health & Healthy Ageing: How the Microbiome Influences Longevity and Mitochondrial Health: The Missing Link Between Energy, Ageing, Metabolism & Recovery explain related systems.

Anabolic Resistance Across Life Stages

Anabolic resistance is usually discussed in relation to ageing, but muscle-supportive habits matter long before older age. Children and teenagers build muscle through growth, sport, play and regular meals. The focus for them is development, energy, learning and healthy movement, not restriction.

In early and mid-adulthood, the goal is to build strength reserves. This is where regular resistance training, enough protein and consistent meals can make later decades easier. Many people wait until they notice strength loss before thinking about muscle, but the better strategy is to build and protect muscle earlier.

In later adulthood, the same foundations become more deliberate. Appetite may be lower, illness or injury can interrupt routines, and muscle may respond less strongly to the same meal or workout. This is where protein distribution, leucine-rich foods, resistance training and recovery become especially important.

Nutrition Across the Lifespan: From Childhood to Healthy Ageing gives wider life-stage nutrition context.

Protein: The Building Block Signal

Protein provides amino acids, which the body uses to build and repair tissues. For muscle, amino acids are especially important because they help stimulate muscle protein synthesis.

Protein also supports tissue repair, enzyme production, immune function, bone health, recovery and nutritional adequacy. For ageing adults, protein should not be viewed as a gym nutrient. It is a lifespan nutrient.

High-Protein Foods: The Foundation of Muscle, Healthy Ageing & Recovery Nutrition, Protein Quality vs Quantity: Why Both Matter for Health & Healthy Ageing and Why Seniors Need More Protein provide more practical protein guidance.

When Appetite Drops

One challenge with ageing is that appetite can drop at the same time protein needs become more important. Some people find large meals harder to finish, skip breakfast, or rely on tea, toast and small snacks. Over time, this can make protein intake too low to properly support muscle.

Small changes can help: Greek yoghurt at breakfast, eggs with vegetables, cottage cheese with fruit, a protein-rich soup at lunch, fish at dinner, tofu in stir-fries, or bone broth as a warm savoury option between meals. The aim is to make protein easier, not more complicated.

Texture and convenience matter too. Soups, stews, smoothies, yoghurt bowls and soft protein foods can be useful when appetite is low or chewing feels tiring. This is one reason broth-based meals can be helpful in real life.

Why Protein Distribution Matters

Many people eat most of their protein at dinner. Breakfast might be toast. Lunch might be a light salad. Dinner might contain most of the day's meat, fish, eggs or legumes.

For muscle maintenance, especially with age, it may be more useful to distribute protein more evenly across the day. The goal is not perfection. The goal is to give the body repeated opportunities to access amino acids.

 

Protein, Satiety & Sustainable Nutrition explains how protein distribution also supports meal satisfaction.

How Much Protein Is Enough?

Protein needs vary with age, body size, activity, health status and goals. Rather than chasing one perfect number, most people do well by making sure each main meal contains a meaningful protein source.

A practical plate might include eggs or Greek yoghurt at breakfast, chicken or lentils at lunch, fish or tofu at dinner, and a structured snack if needed. Active people, older adults and people recovering from illness or injury may need to be more intentional.

If someone has kidney disease or complex medical needs, protein targets should be personalised with a qualified health professional. For the general population, the bigger issue is often too little protein at breakfast and lunch rather than too much protein overall.

Leucine: The Muscle Trigger Amino Acid

Leucine is an essential amino acid that plays an important role in stimulating muscle protein synthesis. Foods containing leucine include eggs, dairy foods, fish, poultry, beef, soy foods and legumes.

Older adults may benefit from paying attention to protein quality and leucine-rich foods because of anabolic resistance. This does not mean every meal needs to be calculated perfectly. It means protein quality becomes more important with age.

A practical way to think about leucine is to include a meaningful protein source at meals rather than relying on small amounts scattered through the day. Greek yoghurt, eggs, fish, chicken, meat, tofu, tempeh, soy milk, lentils and beans can all contribute.

Protein Timing Around Training

Protein timing does not need to be complicated, but it can help to place a protein-rich meal or snack within a few hours of resistance training. This gives the body amino acids around the time muscle is receiving a training signal.

Examples include Greek yoghurt after a morning session, eggs after Pilates, a chicken and barley soup after a gym session, tofu and rice after strength training, or a smoothie with collagen peptides alongside a complete protein source. The bigger priority is still total daily protein and consistency across the week.

Resistance Training: The Other Half of the Signal

Protein alone is not enough. Resistance training provides the mechanical signal that tells muscle it needs to adapt. Examples include weights, resistance bands, bodyweight exercises, Pilates-style strengthening, gym machines, squats, lunges, push movements and pull movements.

The best plan is safe, progressive and consistent. For beginners, this may mean starting with bodyweight movements, bands or working with an exercise professional. The aim is not to train like an athlete. The aim is to give muscle a reason to stay strong.

 

Why Protein and Resistance Training Work Better Together expands on this combination.

How to Start Resistance Training

Resistance training does not need to start with heavy weights. A beginner can start with sit-to-stand movements, wall push-ups, step-ups, resistance bands, light dumbbells, Pilates-style strengthening or supervised gym machines.

The key is progression. Muscle adapts when the challenge gradually increases. That might mean more repetitions, slightly heavier resistance, better range of motion, improved control or more consistency across the week.

For older adults, people returning after injury, or anyone unsure where to begin, professional guidance can be useful. The safest plan is one that matches current ability and builds confidence over time.

Recovery Is Part of the Signal

Muscle is not built during the workout alone. Training provides the stimulus, but adaptation happens during recovery. Sleep, rest days, adequate energy, protein, hydration and stress management all help the body respond to training.

This is one reason under-eating can work against strength goals. If the body does not receive enough energy and protein, it may struggle to repair and adapt. A muscle-supportive routine should feel nourishing, not punishing.

Complete Proteins and Functional Proteins

Different protein foods play different roles. Complete proteins provide all essential amino acids in useful amounts. Examples include eggs, fish, meat, poultry, dairy foods and soy foods. These are particularly important for muscle protein synthesis.

Functional proteins such as collagen peptides and bone broth provide collagen-derived amino acids including glycine, proline, hydroxyproline and glutamine. These amino acids support different structural and repair-related roles within the body.

Bone broth and collagen peptides work best as part of a broader protein pattern that also includes complete protein foods. The goal is not choosing either complete proteins or functional proteins. The goal is combining both in a way that fits your meals.

Collagen Peptides: Benefits for Skin, Joints, Recovery, Gut Health & Healthy Ageing, Collagen Amino Acids Explained: Glycine, Proline & Hydroxyproline, Amino Acids vs Peptides vs Protein vs Collagen Peptides and Bone Broth, Collagen & Functional Nutrition explain these differences.

How to Combine Protein Foods in Real Meals

A useful way to think about muscle nutrition is to build the meal around a complete protein, then use functional proteins where they naturally fit. For example, eggs at breakfast can provide the complete protein signal, while collagen peptides can be added to a smoothie or yoghurt bowl. Chicken in soup can provide complete protein, while bone broth adds collagen-derived amino acids and savoury depth.

At dinner, fish, meat, tofu, tempeh or legumes can form the main protein source, while bone broth can be used in sauces, stews, risottos or cooking liquids. This keeps collagen and bone broth in their best role: supportive, practical and complementary.

This also helps avoid an all-or-nothing mindset. You do not need a perfect high-protein diet. You need repeated, realistic opportunities to give muscle the materials and signals it needs.

Where Bone Broth Fits

Bone broth can be useful within a muscle and ageing nutrition pattern because it provides protein and collagen-derived amino acids in an easy savoury format.

·       As a warm drink.

·       As a soup base.

·       In stews, risottos and sauces.

·       For cooking grains.

·       As part of a light protein-containing snack.

Bone broth helps support a broader whole-food protein pattern. Its strength is practicality: it can make protein-containing meals easier to prepare and easier to repeat.

Bone Broth Benefits: The Complete Guide to Gut Health, Protein, Recovery & Healthy Ageing provides a broader guide.

What About Collagen Peptides?

Collagen peptides are often used for skin, joints, connective tissue and beauty-from-within routines. They can also fit into active ageing because connective tissue, tendons, ligaments and skin are all part of how the body moves and recovers.

For muscle maintenance, collagen peptides are best viewed as a functional protein rather than the only protein source. They are easy to mix into drinks, smoothies, yoghurt bowls and simple recipes, but they should sit alongside complete protein foods across the day.

This distinction makes collagen more useful, not less. It helps each protein food play its best role: complete proteins for essential amino acids and muscle protein synthesis, collagen-rich options for collagen-associated amino acids and practical daily support.

Muscle, Metabolism and Blood Sugar

Muscle is one of the body's major sites for glucose storage and disposal. This means muscle health is closely connected with metabolic health.

Maintaining muscle may support physical function, body composition, metabolic flexibility, blood glucose regulation and long-term independence. This is why anabolic resistance is not only a muscle issue. It is part of the bigger healthy ageing picture.

Metabolic Flexibility: The Key to Fat Burning, Energy, Healthy Ageing & Metabolic Health, The Gut-Muscle Axis and Eating for an Active Lifestyle connect muscle, metabolism and recovery.

What to Eat to Support Muscle With Age

A muscle-supportive eating pattern is not protein alone. It includes protein at meals, colourful vegetables, fibre-rich carbohydrates, healthy fats, fluids, herbs, spices and enough total energy to support training and recovery.

 

Nutrition Across the Lifespan: From Childhood to Healthy Ageing gives wider life-stage nutrition context.

A Simple Muscle-Supportive Day

 

This pattern provides protein across the day, plus fibre-rich plants and healthy fats. It is a flexible template rather than a strict plan.

Muscle-Supportive Recipe

Bone Broth, Chicken and Barley Soup

A protein-rich soup that combines complete protein, bone broth, fibre and colourful vegetables.

Ingredients

·       4 cups prepared Broth & Co Bone Broth

·       250 g cooked shredded chicken

·       3/4 cup pearl barley

·       1 onion, diced

·       2 carrots, diced

·       2 celery stalks, sliced

·       1 leek, sliced

·       2 cups leafy greens

·       Fresh parsley

·       Black pepper

·       Lemon

Method

1. Saute onion, carrot, celery and leek in a large saucepan.

2. Add barley and prepared bone broth.

3. Simmer until the barley is tender.

4. Add shredded chicken and warm through.

5. Stir through leafy greens.

6. Finish with parsley, black pepper and lemon.

Why it works

·       Complete protein from chicken.

·       Protein and collagen-derived amino acids from bone broth.

·       Fibre from barley and vegetables.

·       Plant diversity from greens and aromatics.

Healing Soups & Nourishing Broths: Bone Broth Recipes for Recovery and the collection of nourishing recipes offer more meal ideas.

Common Mistakes

 

Frequently Asked Questions

What is anabolic resistance?

Anabolic resistance is the reduced ability of muscle to respond to normal muscle-building signals such as dietary protein and resistance exercise.

Why does building muscle get harder with age?

Ageing muscle may become less responsive to amino acids and exercise signals. Reduced activity, lower protein intake, inflammation, metabolic changes and hormonal shifts may also contribute.

Can anabolic resistance be improved?

Adequate protein intake, better protein distribution, leucine-rich foods, regular resistance training and recovery can support muscle maintenance and strength with age.

Is protein more important as you age?

Protein becomes especially important with age because it supports muscle maintenance, bone health, tissue repair and nutritional adequacy.

Is collagen enough to build muscle?

Collagen peptides are useful functional proteins, but muscle maintenance also needs complete protein foods that provide all essential amino acids in useful amounts.

Is bone broth good for muscle?

Bone broth can contribute protein and collagen-derived amino acids, but it works best alongside complete protein foods and resistance training.

What exercise is best for anabolic resistance?

Resistance training is especially important because it provides the mechanical signal muscle needs to adapt.

Summary

Anabolic resistance helps explain why building and maintaining muscle can become harder with age. It is not a reason to give up on strength. It is a reason to become more intentional.

Muscle is built and maintained through repeated daily signals: enough protein, complete protein foods, functional proteins where they fit, regular resistance training, fibre-rich plants, healthy fats, sleep, recovery and consistency.