Why Protein Becomes Your Superpower in Midlife

And why it 's not all about muscles...

Perhaps your Instagram feed is full of nudges to “eat more protein”?  Are we really clear on why this macronutrient, which makes up 17% of our body weight, matters so much in midlife?  

Let's take a look...

💪  Metabolism

Protein plays a critical role in preserving muscle mass, which naturally declines as we age. This matters far beyond aesthetics.  Muscle is metabolically active, meaning it helps you burn more calories even at rest. For women, during perimenopause, when hormonal shifts make it easier to gain fat and harder to lose it, maintaining muscle becomes essential for keeping your metabolism working for you, not against you. 

🍖  Appetite regulation

Protein helps you feel full, satisfied, and less likely to experience energy crashes or cravings. If you’ve ever found yourself constantly hungry or reaching for sugar in the afternoon, low protein intake could be a big reason why. Unlike quick carbohydrates, protein stabilises blood sugar and helps you stay steady throughout the day.

👩‍🦰  Hair, skin and joints

• Hair: Protein provides the building blocks (keratin) needed for strong, healthy hair growth and helps prevent thinning and breakage. 

• Skin: Adequate protein supports collagen production, helping maintain skin elasticity and firmness.  

• Joints: Protein is essential for maintaining cartilage, tendons, and ligaments, supporting joint strength and repair.

🦵 Tissue repair and recovery

Protein helps repair tissue, supports recovery, and protects lean muscle while encouraging fat loss. 

😍  Essential 'behind-the-scenes' functions nobody talks about

• Transporting nutrients and oxygen around the body.

• Antibodies and enzymes that keep your immune system and metabolism functioning properly.

• Detoxification pathways and digestion (including bile acid production).

• Building blocks of neurotransmitters and hormones, including thyroid hormones, serotonin, melatonin, insulin, dopamine, LH and FSH. 

• Works with minerals to keep pH levels stable.

• Maintains fluid balance in the body, preventing excess fluid from leaking into tissues.

⭐️  Wow!  Yes, protein really does get involved with pretty much everything!  So we can see how important it is that we get adequate intake in our diet.  Funny we should mention that...

Which protein is best?

🫛  Think whole, unprocessed foods

Unsurprisingly, the best sources are whole, minimally processed foods.  Protein is found in almost all whole foods and can be largely absent from ultra-processed ones. Diets high in processed foods can be a cause of someone being protein-deficient without realising it. 

🐟  High quality animal protein

• Eggs

• Fish

• Poultry

• Meat 

These are 'complete proteins', meaning they contain all the 9 essentialamino acids your body needs. If you eat red meat, choosing organic or grass-fed options is ideal, and pairing it with plenty of plant foods helps balance overall dietary load and support digestion.

🥛 Dairy 

• Cottage cheese

• Kefir 

• Greek yoghurt

These are excellent choices. They’re rich in protein and also provide calcium and probiotics, which support bone and gut health - both increasingly important in midlife.

🥜  Plant proteins

Plant-based sources can absolutely meet your needs too, but they require a bit more variety. Foods like legumes (e.g chickpeas, beans, peas, lentils), nuts, seeds, greens, and whole grains all contribute valuable protein. However, many plant proteins are not 'complete' on their own, so combining foods, such as grains with legumes, or adding nuts and seeds, helps ensure you’re getting the full spectrum of amino acids.

Plant-based complete protein sources: 

• Quinoa

• Buckwheat

• Chia seeds

• Hemp seeds

• Pumpkin seeds

• Tempeh

🥤 What about protein powders?

Protein powders can be a helpful option, especially if appetite is low or mornings are rushed. Look for clean options with minimal ingredients - whey, collagen, or plant-based like hemp, depending on your preference. They’re not a replacement for whole foods, but they can make consistency much easier.

How much protein should I be eating?

Balance matters - too little protein can lead to fatigue, poor recovery, and muscle loss, while excessive intake over time may place strain on the kidneys, liver, heart, and bones. For most people, around 0.75g per kg of body weight is a good baseline, making adjustments depending on activity levels and individual needs.  For example, athletes or people with high exercise levels, pregnant women and people recovering from illness will require more protein.

💛 The takeaway

The key is variety and consistency. Aim to include a source of protein at every meal, rotate your protein sources, and focus on whole foods as your foundation. When you do that, you’re not just supporting muscle, you’re supporting your hormones, your metabolism, your immune system, and your ability to feel strong and energised.