Skip to content

SOUTH AFRICA'S LEADING WOMEN'S WELLNESS COMPANY • FREE SHIPPING ON ORDERS OVER R1000.

Let's talk about Sarcopenia

Let's talk about Sarcopenia

Sarcopenia comes from the Greek words for “poverty of the flesh.” It describes the loss of muscle mass, strength and function that can happen as we age. Left unchecked, it can affect our quality of life, increase our risk of falls and injury, and make everyday tasks more difficult.

The lovely news is age-related muscle loss is not something we simply have to accept without doing anything about it.

“Muscle mass decreases approximately 3–8% per decade after the age of 30, and this rate of decline is even higher after the age of 60.” — Current Opinion in Clinical Nutrition and Metabolic Care

MRI scans of the thighs of a 74-year-old sedentary man and a 70-year-old triathlete
MRI scans comparing thigh muscle and fat in a 74-year-old sedentary man and a 70-year-old triathlete. The lighter areas show fat tissue, while the darker areas show muscle. Source: Wroblewski et al., 2011.

Take a look at these two scans. Both show the thighs of men in their early 70s. Notice how much more muscle is visible in the active man, compared with the fat surrounding and running through the muscles of the sedentary man. These are two different people, so the image cannot prove exercise caused every difference, but it beautifully shows what staying active can look like.

Could you be at risk?

Doctors often use a short screening questionnaire called the SARC-F to identify people who may be at risk of sarcopenia. Ask yourself:

  • Do I struggle to lift and carry around 4.5 kg?
  • Do I have difficulty walking across a room?
  • Do I struggle to get up from a chair or bed?
  • Do I have difficulty climbing a flight of stairs?
  • Have I fallen more than once in the past year?

If you answered yes to any of these, it is worth chatting to your doctor or a healthcare professional. In the meantime, here is how nutrition and movement can help support your muscles.

• • •
Nutrition and lifestyle pillars for muscle health: healthy diet, protein and leucine, hydration and nutraceuticals
Key nutrition and lifestyle pillars for muscle health. Source: Calvani R et al. Metabolism, 2023.

Eating enough

Total energy intake matters as we age. We often see older adults eating too little because of changes in taste, a smaller appetite or difficulty eating. When the body does not get enough energy, it breaks down muscle protein as well as fat to fuel itself, which is the opposite of what we want.

On the other hand, it is also possible to eat plenty but still miss out, by relying on “empty calorie” foods that are high in energy but low in nutrients (think chips or pastries). The goal is enough energy from a balanced, nourishing diet.

Protein

Getting enough protein is one of the most important things we can do to support our muscles as we age. The general minimum is 0.8g per kg of body weight per day, but experts recommend that healthy older adults aim for around 1.2 to 1.6g per kg for those living with illness or chronic disease.

A few simple ways to get there:

  • Aim for around 25 to 30g of protein at each meal, rather than saving most of it for dinner.
  • Eat the protein on your plate first, before you start to feel full.
  • Consider a whey protein shake if you struggle to get enough protein from food. Whey is naturally rich in leucine, an amino acid that plays a key role in switching on muscle protein synthesis.

Collagen production also declines with age. Collagen is the main protein in the tendons, ligaments and connective tissue that support our muscles, so a daily spoonful of collagen peptides can be a helpful addition alongside, not instead of, other protein sources.

Vitamin D

Vitamin D contributes to the maintenance of normal muscle function and normal bones, and plays a role in calcium absorption. Low vitamin D levels are linked with a higher risk of sarcopenia.

Study One study found that people who were vitamin D deficient had around twice the risk of sarcopenia. Even in sunny South Africa, many people have low levels, so a simple blood test is a good place to start.

Omega-3

Omega-3 fatty acids help regulate inflammation. This matters because ongoing inflammation can slow muscle protein synthesis and increase muscle breakdown. Some research suggests omega-3s may help support muscle protein synthesis in older adults.

If you are not eating oily fish such as sardines, mackerel or salmon at least twice a week, an omega-3 supplement may be worth considering.

A Mediterranean-style diet

According to a 2023 review in Metabolism, a Mediterranean-style eating pattern may help protect muscle health as we age. It is rich in vegetables, fruit, olive oil, nuts, legumes and fish, which provide antioxidants such as vitamins C, E and A, as well as beneficial plant compounds.

• • •

Movement: the most powerful tool

Alongside good nutrition, exercise is the most effective way to protect muscle and improve quality of life as we age. Rogan Heyns, a Cape Town biokineticist, follows these guidelines from the American College of Sports Medicine (ACSM):

  • Progressive resistance training: Using weights, resistance bands or body weight, gradually increasing the load over time to stimulate muscle growth and strength.
  • Frequency: At least two to three days a week, targeting all the major muscle groups.
  • Intensity: Moderate to high, around 60 to 80% of the most you can lift once (your one-rep maximum). Beginners can start with lighter loads and build up.
  • Functional exercises: Movements that mimic daily life, such as squats, lunges and stair climbing, to improve mobility and balance.
  • Aerobic exercise: Walking or cycling alongside resistance training supports heart health and overall fitness.

Consistent training helps maintain and even rebuild muscle mass, strength and function, which is key to staying strong, independent and well in the years ahead.

• • •

A note before we go

Sarcopenia is not just a part of getting older. It is the result of a shift that begins in our 30s and accelerates over the decades, and it can be influenced far more than most of us realise.

The small, daily things we do (what we eat, how we move, how we rest) all matter. Protein at every meal. A few resistance sessions a week. A walk after dinner. These are the little acts of care that add up to strength, mobility and independence in our later decades.

Because when it comes to our muscles, it is never too late to start looking after them.

If you have any questions or would love to chat through what might be right for you, please contact our dietitian at dietitian@sallyanncreed.co.za. We would love to hear from you.

References

Volpi E, Nazemi R, Fujita S. Muscle tissue changes with aging. Current Opinion in Clinical Nutrition and Metabolic Care. 2004;7(4):405-410.

Wroblewski AP, Amati F, Smiley MA, et al. Chronic exercise preserves lean muscle mass in masters athletes. The Physician and Sportsmedicine. 2011;39(3):172-178.

Calvani R, Picca A, Coelho-Júnior HJ, Tosato M, Marzetti E, Landi F. Diet for the prevention and management of sarcopenia. Metabolism. 2023;146:155637.

Malmstrom TK, Morley JE. SARC-F: a simple questionnaire to rapidly diagnose sarcopenia. Journal of the American Medical Directors Association. 2013;14(8):531-532.

This blog is for educational and informational purposes only, and should not be considered medical advice. The information shared here is not intended to diagnose, treat, cure or prevent any disease. Please consult your doctor or a qualified healthcare professional before making any changes to your diet, lifestyle or supplement routine.