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Writer's pictureErin Benner

For Cancer? That is the question!



Supplements are a frequent topic  in my cancer care community.  As a registered dietitian nutritionist, I often get asked whether vitamin supplements can help prevent cancer recurrence. It’s an understandable question, especially when supplements like vitamin E, C, D, omega-3 fatty acids, beta-carotene, and folate are frequently promoted for their potential health benefits. But the relationship between supplements and cancer care is complex and, at times, controversial.


The Evidence on Supplements for Cancer Prevention


Let's start with the research. Several studies have explored whether vitamin supplements can reduce cancer risk, but the findings are often mixed or inconclusive. For example:


Vitamin E has been studied for its antioxidant properties, which theoretically could help reduce cancer risk by protecting cells from damage. However, large trials, such as the Selenium and Vitamin E Cancer Prevention Trial (SELECT), found that high doses of vitamin E did not prevent prostate cancer and may actually increase the risk of it in some men.


Vitamin C has long been touted for its immune-boosting effects, and while it plays a role in overall health, research has not demonstrated a strong connection between vitamin C supplementation and reduced cancer risk.


Vitamin D shows more promise. Some studies suggest that adequate vitamin D levels may help protect against certain cancers, particularly colorectal cancer. However, taking high doses of vitamin D in supplement form doesn’t automatically translate into cancer prevention, and more research is needed to confirm these findings.


Omega-3 fatty acids from fish oil have been examined for their potential to reduce the risk of cancer, especially breast and colon cancer. While some observational studies suggest a link between higher omega-3 intake and reduced cancer risk, intervention trials haven't consistently supported these findings.


Beta-carotene, a precursor to vitamin A, has been studied extensively, particularly in smokers. Surprisingly, studies found that beta-carotene supplements can actually increase the risk of lung cancer in smokers, emphasizing the potential dangers of high-dose supplementation in certain populations.


Folate is another nutrient with mixed findings. While it’s essential for DNA synthesis and repair, and low folate levels have been linked to increased cancer risk, supplementation—particularly at high doses—has not consistently been shown to reduce cancer risk and may even promote tumor growth in some cases.


Where Does That Leave Us?


Given the inconsistent findings, the general recommendation is to focus on obtaining these nutrients through a well-balanced diet rich in fruits, vegetables, whole grains, and healthy fats rather than relying on supplements for cancer prevention. That being said, there’s no one-size-fits-all approach, and that’s where the emerging field of nutrigenomics comes into play.


The Role of Nutrigenomics Testing


Nutrigenomics is the study of how our genes interact with the foods we eat, including how we metabolize certain nutrients. Genetic variations can influence how efficiently your body absorbs, processes, and utilizes vitamins and other compounds. For example, some people may have a genetic variation that impairs their ability to convert beta-carotene into active vitamin A, meaning they might benefit from a different form of supplementation.


Similarly, your genetic makeup can affect how well your body synthesizes vitamin D or metabolizes folate, which could influence whether you need to supplement these nutrients or adjust your dietary intake.


By undergoing nutrigenomics testing, individuals can receive more personalized recommendations regarding supplement use, potentially reducing the risk of both deficiency and excessive intake. Rather than guessing whether or not to take supplements like vitamin E, C, or omega-3, nutrigenomics provides data that can help guide these decisions based on your unique genetic profile.


In Conclusion


While vitamin supplements hold some promise in cancer prevention, the science is far from settled. Until we have more conclusive evidence, the best approach remains to focus on a nutrient-rich, whole-foods diet. For those interested in a more personalized approach, nutrigenomics testing can offer valuable insights into whether supplementing with specific vitamins might benefit your overall health and cancer risk reduction. Talk to me to find out more about what your individualized needs may require.


Want to know more about Nutrigenomix testing?







Writer's pictureErin Benner

What if I told you that you may need to take in more salt this week? It’s going to be another hot one so today I’m talking about ways to optimize your hydration level so you can feel your best.  Optimal hydration can improve your treatment side effects, mood, physical performance and weight balance.  Your fluid and electrolyte needs are unique.  Learn about electrolytes and water goals in cancer care below.


There’s more to hydration than drinking 8 cups of water a day.  Understanding how much you need to drink and whether it can be helpful to supplement with electrolytes is a key topic in cancer care. 


Many of my clients have significantly decreased their processed food intake as well as eating out less often through working together.  That means a major drop in salt and sodium intake which is usually a really good thing, but on these hot days you may not be getting enough sodium for optimal hydration.


Why is sodium important?  Your body has the ability to absorb fluid in two main ways: passively and actively.  To actively absorb water, sodium and glucose (sugar) are needed.  When this is activated you can hydrate more completely which is important if you are struggling with dehydration or active outside in this hot weather.  


How do you know if you are dehydrated?  Cancer treatment is a risk factor for dehydration.  That’s why you get IV fluid during chemo.  A buildup of medications and chemo increases therapy side effects, so you want to be hydrated enough to flush them out effectively.  Mucositis, nausea, vomiting and diarrhea impact fluid intake and output but replacing these fluids can be challenging.   Also, inflammation from radiation treatment increases fluid requirements because extra fluid is used to protect and soothe the treated tissue.  If you are significantly dehydrated, on exam, your blood pressure may be low.  It can also show up as high sodium (Na) or high creatinine in your blood work.


Beyond treatment, dehydration can worsen lingering side effects like peripheral neuropathy, lymphedema, brain fog, fatigue, and decreased mental wellbeing.  Other risk factors for dehydration include being a “salty sweater”, not having strong thirst signals, advanced age and following a low carbohydrate diet.


If you are mildly dehydrated, just 2% below your optimal level, you may notice having more difficulty paying attention and feeling calm.  I’ve also seen dehydration contributing to the 3pm sticky spot of cravings and tiredness.


The best way to monitor your hydration level throughout the day is by paying attention to your urine colour.  You’ll notice in the morning urine is a dark yellow because you haven’t been drinking much through the night typically, and your body is repairing, recovering and creating waste.  You should notice your urine getting paler through the morning as you rehydrate.  The kidneys are most active for the first half of your awake hours.   Support their job of getting rid of that waste by starting your day with non-caffeinated fluid and continue to take in fluids every 1-2 hours.  A light straw colour is an indication of good hydration.  If your urine is clear it can mean you’re not absorbing the fluid you’re drinking efficiently.  This is a time where electrolytes can give you a boost.


Urine Colour Hydration Scale



Electrolytes can increase your body’s ability to absorb fluid from your diet as well as get that fluid into the cells so they can perform optimally.  The key ones are sodium and potassium but you may also see magnesium and calcium in some electrolyte and rehydration products.  These are all nutrients we can get in adequate amounts from a personalized diet.  But there are situations where supplementing with electrolytes can make a big difference.  During treatment, if you are having a hard time drinking water or you are struggling with GI (gastrointestinal/digestive) side effects including vomiting, diarrhea, high ostomy output, constipation or dry mouth/mucositis, fluid replacement is vital. Oral rehydration solutions used in severe dehydration contain about 600 mg of sodium per 250mL.   For day to day dehydration caused by long activities outdoors or mild/intermittent GI side effects, look for a product or recipe that has at least 300 mg of sodium per cup.  You will probably only need 1-3 cups to optimize your water absorption.  Potassium, magnesium and calcium supplementation need to be discussed with your health care provider.  Cancer can have a big effect your intake of food sources of these electrolytes as well as blood levels and requirements.  Supplementing too much with any of these can make side effects worse and possibly result in hospitalization.


What about sugar?  Zero calorie electrolyte products are everywhere.  To be a true rehydration drink sugar or glucose is needed.  Think of these more as a way to boost your fluid intake by giving your water taste.  A little bit of sodium can increase thirst and therefore increase your overall fluid intake through the day but it won’t be enough to replace high losses.  Speak to your health care team to understand what your requirements are based on your unique situation.


Is 8 cups of water a day really the goal? I’ve seen 8 cups of water a day recommended all over the place.  That’s a very general recommendation but often a reasonable target for most people.  However, for optimal results it's best to calculate your fluid needs based on your age, weight, body composition, daily environment and activity patterns. I usually find people's needs are higher than 8 cups.  


Here are some ways to take action and improve your hydration level this week:


  • Start the day fresh with a clear glass of water

  • Find a water bottle you love and carry it with you

  • Put a visual reminder to have a drink in the place you spend most of your day

  • Measurements on a water bottle can help you track your progress and get you closer to your goal

  • Water isn’t the only fluid: herbal tea, 1-2 cups of coffee, sparkling water, milk, nutritional supplements, soup and yogurt count!

  • Add flavour to keep things interesting: try a slice of lemon or lime, True Lemon crystals, dilute juice 1:5, low calorie electrolyte powders such as Nuun if appropriate for your individualized needs.

  • Keep a pitcher of water with a known volume in the fridge, infuse it with chopped fruit or herbal tea if desired.







Rose Sun Tea


Rose petals contain polyphenols that have anti-inflammatory activity.  It may aid in reducing mucositis pain as well as chemo-induced nausea and vomiting.

Enjoy this slightly sweetened tea chilled on a sunny day.


Ingredients 

¼ cup of dried organic rose petals

2-4 tsp of honey, to taste

1.5 L of water


Instructions

In a glass or BPA free pitcher, add dried rose petals, honey, then water.

Cover and place the pitcher in a sunny spot for 4-6 hours. Stir halfway.

Refrigerate or pour over ice through a tea strainer to enjoy!



 

Homemade-Aid

Make your own sports drink to take with you on an activity lasting more than 2 hours outside such as hiking, golfing, gardening, Dragon Boating or biking


Ingredients

½ cup juice such a grape, cherry, cranberry (if struggling with constipation try apple or pear, if struggling with mouth sensitivity try peach or pear nectar)

3½ cups water

½ tsp salt



 

DIY Oral Rehydration Solution

To replace high losses, an oral rehydration solution may be recommended.  To make your own, use this recipe.


Ingredients

3/8 tsp salt (sodium chloride)

¼ tsp Windsor Salt Free® (potassium chloride)

½ tsp baking soda (sodium bicarbonate)

2 tbsp + 2 tsp sugar

Add tap water to make 1 liter


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Writer's pictureErin Benner


Worried about weight gain and breast cancer? Studies have shown a link between body weight and breast cancer risk. Many women experience weight changes after a breast cancer diagnosis. In my previous post I talked about some of the reasons why. Here are a few simple things you can do right now to boost your body during treatment and reduce treatment-related weight gain.


Women have a variety of different treatment plans depending on the individual and type of breast cancer (ER, PR, HER2 negative or positive, tumor stage stage, genetics, medical conditions, risk factors, etc.). The tips here are general enough for most, however, it is important to discuss your individual concerns with your healthcare provider. There are many benefits to working with a specialized dietitian through cancer treatment. You likely have nutrition services available through your cancer center. Look at your patient directory or speak to your nurse or oncologist. Savour Nutrition offers virtual nutrition support through 1:1 counseling and coaching from Calgary, Canada. I spent the first decade of my dietetics career at Cancer Control Calgary. My practice now focuses on providing continuous care from diagnosis through healing. In this space I can help people feel more clear, confident and in control of their diet while improving treatment outcomes, reducing side effects and recovering from treatment damage so cancer survivors can live a vibrant, empowered life. If you have questions about working with me, reach out through this contact form and tell me about where you are in your journey and where you need guidance.


Weight Gain and Breast Cancer Treatment


Gaining weight through breast cancer treatment can be distressing. It adds to the body dissatisfaction so many women feel after being diagnosed. Often, your body feels completely different than it did before and it can be confusing and overwhelming to put your energy into losing weight.


If you are still going through treatment, either surgery, radiation, chemotherapy or hormone therapy there are some strategies and tools to nourish your body in a way that maintains muscle mass, balanced intake and reduces stress.


Fuel For Repair.


Cancer treatments damage healthy tissues as well as cancerous ones. Your body needs important nutrients to repair this damage to your skin tissue and on a deeper level, your immune system (and all its many, many parts). Trying to get enough of the best foods can be limited by side effects like mouth soreness, taste changes and food aversions. If side effects are making eating challenging, you may need more support. But right now you can start focusing on high protein foods throughout the day.


Getting enough protein can greatly reduce muscle loss and help maintain a balanced body weight. Protein is the single most important nutrient for cell repair. Start including a high protein food like eggs, greek/skyr yogurt, nuts/seeds and their butters, meat including fish, bivalves, chicken, pork and beef, high protein plants such as beans, legumes, soy, sea vegetables and whole grains.


Here is the trick: include a high protein food at each meal and snack.


When my clients start including 1-2 protein choices every time they eat they stabilize their weight, improve their energy levels and often their blood counts. The best protein foods for you are the ones you enjoy. This can look different for everyone. Certain diet restrictions can make it more difficult to achieve your protein target (which is calculated using weight, height, nutrition status and treatment plan).


Balance Your Intake.


Meal schedules hit a rocky patch during treatment. Frequent appointments, wait times, fasting protocols, decreased food availability, food confusion and stress can disrupt regular meal times and force you to eat in foreign settings, making choices that you might not usually make at home. You might be skipping meals then finding yourself ravenously hungry, then going for the first option you have. Which might not always be a nutritious one. You need more nutrition during treatment than before your diagnosis so it’s important to think about how you can accommodate this increased need. Planning ahead for treatment schedules takes the pressure off so you can savour good, nutritious foods when you need them.


Bringing balanced snacks with you to appointments. I always suggest keeping a bag of trail mix in your car and bag. Get my recipe below. UHT milk bottles/boxes, high protein snack bars and meal replacements can also be kept in a bag in the car for nutrition emergencies.


Have a packed lunch on full treatment days. Bring small amounts of a variety of foods because you might not find everything enticing when you go to eat it. Include 3-4 high protein foods, some fruit, veg, dips, a couple of different textures, your favorite food, a treat or “just because” food and some fluids.


The trick that works for most people is to eat a smaller amount but more frequently so you’re not overwhelmed by side effects or meal portions and you can offer your body nutritious foods throughout the day.


Get help with family meals. Many of my clients are the ones responsible for meal planning, preparation and shopping but they don’t have the same time or energy for it during treatment. Make a plan to delegate these tasks. Family and friends can make some of your favorite recipes, bonus points if they can be portioned and frozen for a later day. Finding healthy meal delivery services or ready-prepared dishes can support balanced choices and meals at home.


Reduce Food Stress.


How many times have people given you unsolicited advice about your diet? How many times have you wondered before you put something on your plate whether or not it was safe? Feeling unsure about your food choices can be debilitating. Some of the advice out there is downright dangerous. If you’ve been drastically changing since diagnosis, your diet it's probably contributing more stress than good. Everyone means well; the purpose is to help you through treatment. Start doing that right now by taking a deep breath into your belly and exhaling some of the tension in your stomach. Set your mind at ease, knowing you can make healthful choices without going over the deep end. Your diet does not need to be perfect to be nourishing. And you don’t need to restrict and deprive yourself to cure the cancer.


Brenda had always thought she ate pretty well. Sure, she didn’t really like kale but she figured she was doing the right things. It was rattling to hear she had breast cancer. She started to question all she thought she knew about how to be healthy. “Maybe I should only be eating salads and cut out animal products.” Her husband would often find her in the glow of the refrigerator, stalled and fretting over what was safe to eat. “Shouldn’t I be eating all the superfoods that can cure cancer? I don’t even know what to make for dinner!” she worried. Through our time together she found relief and realized she and her support system were capable of making good meals that Brenda could eat during treatment. Adding nutritious foods to her day to fortify her body so she could focus on healing.


Knowing what to focus on and creating a plan to help you meet your nutrition needs through treatment will help by providing consistent, nourishing foods your body uses to stay strong. When you get enough protein, avoid skipping meals and decrease the stress of food choices you hold on to muscle mass and boost your body’s natural recovery systems.


If you are looking for support, send me a direct email at Erin@savournutrition.com


Savour Nutrition is launching a small group cohort program for women diagnosed with breast cancer wanting to nourish their body and heal their relationship with food. With the best food combinations for you, the right nutrients and powerful strategies you can start feeling better and recognize your best self.

Join the waitlist for more information!



Satisfying Trail Mix Recipe


Store-bought trail mix can be high in calories and sugar. Making your own trail mix let’s you add the most nutritious combinations of nuts, seeds and fruits. Adding a low calorie crunch choice makes the mix even more satisfying while lowering the amount of fat per serving and increasing the fibre!


Satisfaction Formula:

1⁄3 low calorie crunch

1⁄3 protein rich nuts & seeds

1⁄3 sweet dried fruits and chocolate.


1⁄3 cup serving provides about 8g protein, 4g fibre (may vary depending on ingredient combination)


Low Calorie Crunch options

● Whole grain cereal (Shreddies, Chex, Cheerios)

● Whole grain crispy cracker/snack (Crispy Minis Rice Cracker, popcorn, mini triscuits)

● Dry Roasted Beans, Lentils or Legumes (roasted chickpeas or lentils, soy nuts or dry

roasted edamame) *bonus these are also high in protein


Nuts and Seeds

Using at least two types of nut and seed adds interest and texture. Listed from highest to

lowest protein content: pumpkin seeds, peanuts, almond, pistachio, sunflower seed, cashew,

walnut.

*Pumpkin seeds, peanuts and cashews are great sources of Zinc which helps skin healing after surgery and boosts the immune system during chemotherapy.


Dried Fruits and Chocolate

Add some sweetness with dark chocolate chips and/or dried fruit.

Dried or freeze dried blueberries, freeze dried strawberries, dried cherries, dried cranberries, raisins and dried apple are lower sugar, higher fibre, and nutrient dense options.

Tropical fruits like pineapple, banana and mango have much more sugar than fibre. They can be balanced by being in combination with dark chocolate chips and/or dried berries.



→ Next post will be about where to begin with treatment related weight gain.


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