You may have heard that protein is a crucial part of a healthy diet, offering satiety and fullness at meals. But did you know that protein also serves as the building blocks of the body, providing essential amino acids to boost immunity and build lean muscle?

During cancer treatment, the importance of protein becomes even more critical. Dietitians often recommend aiming for 1.2-1.5 grams of protein per kilogram of body weight to support your body's needs. However, achieving optimal protein intake can be challenging, especially since up to 64% of cancer patients experience some degree of weight loss (1).

In this blog, we'll dive into the significance of protein during cancer treatment and provide a detailed guide on selecting the best protein powders to help meet your nutritional needs. We'll share practical tips on incorporating these protein powders into your diet and offer recommendations on the most effective products. Let's explore how to support your health and well-being during treatment with the right protein choices.

Cancer treatment is tough on the body. Common side effects from medications and therapies, including taste changes, nausea, and food aversions, often lead to muscle breakdown and weight loss. From the onset of treatment, targeting your protein needs can provide the strength and immunity your body requires to endure the challenges ahead.

Research shows that a high protein intake optimises protein anabolism. Muscle wasting in patients is linked to higher incidences of surgical complications, increased treatment toxicity, more hospital admissions and poor prognosis. As a preventative measure to limit the impact on nutrition and reduce deterioration, incorporating high-protein supplements like protein powders can offer a convenient and nourishing option, giving you a 'great bang for your buck' meal.

There are so many options, which one is best for me and my treatment?

With so many protein powder options available, you might wonder, "Which one is best for me and my treatment?" It's crucial to consider your current lifestyle, activity level, work situation, and the type of cancer you have. For instance, the nutritional needs and treatment impacts for breast cancer can differ from those for small cell lung cancer.

When undergoing treatment, it's generally suggested to avoid protein powders with added probiotics and concentrated sources of branched-chain amino acids (BCAAs).
Chemotherapy and radiotherapy can affect the composition of your intestinal microbiota, leading to a condition known as dysbiosis, which impacts the biochemistry of the gastrointestinal (GI) tract. While probiotics can positively influence the GI tract, research remains inconclusive, and the safe, efficient use of probiotics during cancer treatment has not been definitively established.

Additionally, studies have indicated that high levels of BCAAs might influence tumour growth and progression. This happens because the body reprograms BCAA metabolism, using them as fuel. One of the essential amino acids in particular, glutamine, is produced from BCAA catabolism and can 'fuel' tumour cells in various cancers.

Given these factors, when assessing protein powders, it's best to choose options with minimal ingredients and few additives. But what about sugars? As we discussed in a previous blog, the idea that sugar directly feeds cancer is an oversimplification. Sugar provides fuel for all cells, and it's essential to prioritise the well-being of healthy cells.

Focus on protein powders that are simple and clean, free from unnecessary additives, and tailored to your specific needs during treatment. This careful selection can help support your health and well-being through the challenges of cancer treatment.

The low down on protein powders for cancer treatment:

Choosing the right protein powder during cancer treatment can be a daunting task. Here's a comprehensive guide to help you understand the options and make an informed choice.

Whey Protein: Isolate vs. Concentrate

Whey Protein Isolate (WPI) and Whey Protein Concentrate (WPC) both originate from whey, a high-protein by-product of cheese production. The key difference is in the processing:

• Whey Protein Concentrate is less refined, contains low levels of lactose, complete amino acids, fat-soluble vitamins, and has an 80% protein content, making it easier to absorb.

• Whey Protein Isolate has undergone further processing to reduce lactose, carbohydrates, and fat, resulting in a higher protein content of about 90%. It also contains complete amino acids and is generally more expensive due to its higher quality.

On average, a 30g serving of whey protein provides 24-28g of protein.

• Bulk Nutrients WPI: Contains whey protein isolate, flavouring, and sweetener (sucralose) $43 per kg

• Bulk Nutrients WPC: $35 per kg

• True Protein WPI 90: $75 per kg

• True Protein WPC 80: $63 per kg

Note: While some suggest avoiding whey protein during treatment due to inconclusive research, those intolerant to dairy should avoid whey protein to prevent inflammation.

Plant-Based Proteins: Pea Protein Isolate

Pea Protein Isolate is a natural vegetable protein derived from peas and is an excellent plant-based protein source for vegans and vegetarians. It provides a balanced amino acid profile and high protein concentration, typically around 85%. It is free from lactose and soy, making it ideal for those with intolerances. Some plant proteins are blended with rice protein isolate for a more comprehensive protein profile. The texture is thicker compared to whey protein. On average, a 30g serving of plant protein provides 22-24g of protein.

• Bulk Nutrients Pea Protein: $33 per kg

• Bulk Nutrients Earth Protein (Vegan): $38 per kg

Note: Some plant proteins contain added probiotics. Bulk Nutrients' products do not. Always check ingredients when choosing. For breast cancer patients, plant-based protein powders without added ingredients and made up of a mix of different protein sources are recommended.

By understanding the differences and benefits of these protein powders, you can select the best option to support your nutritional needs during cancer treatment.

Easy tips to Boost Protein in your Diet

Increasing your protein intake doesn't have to be complicated. Here are some simple and delicious tips to help you create a nourishing, 'bang for your buck' drink:

• Add Protein Powder: Mix your protein powder with full-cream milk for a rich and creamy boost. If you're lactose intolerant, opt for your favourite plant-based milk instead. Try these flavour combinations for a tasty treat:

  • Frozen banana and peanut butter

  • Raspberries and yogurt

  • Ice cream and your favourite topping

• Alternative to Protein Powder: If protein powder isn't your thing, consider Sustagen® or similar, a versatile nutritional supplement. You can find Sustagen® at chemists (around $29), as well as Woolworths or Coles. It comes in powdered form or as ready-made drinks in a 3-pack (around $6.70).

  These easy tips can help you incorporate more protein into your diet, supporting your nutritional needs during cancer treatment and beyond.

  Navigating Protein powders during cancer treatment can be overwhelming, but it doesn't have to be. By understanding your unique nutritional needs and considering the effects of your treatment, you can make informed choices that support your health and well-being.

Whether you opt for whey protein isolate, whey protein concentrate, or a plant-based option like pea protein isolate, the key is to choose a product that aligns with your dietary preferences and medical guidance. Remember to avoid powders with added probiotics and high concentrations of BCAAs, and always check the ingredients for any potential allergens or unnecessary additives.

For those looking for an alternative to protein powders, products like Sustagen over a convenient and nourishing option. By incorporating these supplements into your diet, you can ensure you're getting the essential nutrients your body needs to maintain strength and immunity throughout your treatment journey.

Ultimately, the best protein powder is one that fits seamlessly into your lifestyle, meets your nutritional requirements, and helps you feel your best. Stay proactive about your health, consult with your healthcare team, and choose products that will support your recovery and overall well-being. And remember you can always discuss your concerns and queries with a Dietitian.

Disclaimer: Feel Better Nutrition is not affiliated with nor sponsored by any food brands. It is up to the individual to choose the best product for their own body, alongside the guidance of their dietitian.

References:

1. Dingemans AM, van Walree N, Schramel F, et al. High Protein Oral Nutritional Supplements Enable the Majority of Cancer Patients to Meet Protein Intake Recommendations during Systemic Anti-Cancer Treatment: A Randomised Controlled Parallel-Group Study. Nutrients. 2023;15(24):5030.

Looking for recipe inspiration for high protein smoothies? Try our Soothing Smoothies Recipe e-book!

10 dietitian-approved smoothies to help you move through chemo with more ease, less side effects, and more energy!