Clear, Compassionate Nutrition Guidelines You Can Use Today

By Sallyanne, Dietitian & Mindful Eating Coach, with insights from cancer dietitian Jane Freeman
Note: This article is for education and support only. Always follow the advice of your medical team.

When a woman hears “you have breast cancer,” food questions cascade in: Should I cut out sugar? Why am I gaining weight on treatment? Do I need probiotics? Which supplements help—or harm? 

In our Breast Cancer Awareness Month conversation, internationally regarded cancer dietitian Jane Freeman (board certified in Lifestyle Medicine and award-winning author) offered grounded, practical answers. This post distills her guidance into simple, doable steps so you can nourish yourself—without extreme diets, guilt, or added stress.

How common is breast cancer—and what can I influence?

Breast cancer is the most common cancer for Australian women, with around 1 in 7 women diagnosed by age 85. 

While age and family history matter, only a small proportion (about 5–10%) of breast cancers are linked to inherited genes. That means there’s meaningful space for lifestyle factors to support overall health before, during, and after treatment.

Modifiable factors to focus on:

🥦 Plant-rich eating: plenty of vegetables, fruits, legumes, whole grains, nuts, and seeds.

🐾 Physical activity, tailored to your energy and medical advice.

💪🏼 Weight compassion: prioritise muscle strength, energy, and quality of life over the scale number.

🍷 Alcohol reduction (or avoidance if recommended).

💗Big picture: lifestyle factors aren’t a guarantee, and cancer is multifactorial. Instead of blame, think support. What nurtures your body today?

Myth busting: “Does sugar feed cancer?”

This idea is everywhere online—and it’s misleading. All our body cells use glucose for energy. Cancer cells are metabolically agile and will access fuel regardless of you “cutting out sugar.” Over-restriction can backfire by breaking down muscle, undermining strength, immunity, and recovery.

What to do instead

1) Keep carbohydrates on the plate—focus on quality: Vegetables, legumes, whole grains, lower-GI options.

2) Pair carbs with protein and healthy fats to steady energy and appetite.

3) Aim for a plant-rich, minimally processed way of eating that you can sustain—especially during treatment.

Your plate during treatment: the simple framework

Treatment (chemo, surgery, radiotherapy, hormone blockers, sometimes immunotherapy) is taxing. Your nutrition goals are different to “everyday healthy eating.” Now, the priority is fueling recovery, maintaining muscle, and managing side effects—not dieting or chasing a perfect plate.

The “Plant-Rich Plate” model

• ½ plate vegetables (aim for multiple colours).
  
• ¼ plate protein, “dosed” across the day.
  
• ¼ plate smart carbs (whole grains, legumes, starchy veg).
  
• Add healthy fats (olive oil, avocado, nuts, seeds).
  

Protein “dosing” matters

• Include 1 -2 protein-rich foods at each meal (e.g., dairy or soy yoghurt, tofu/tempeh, eggs, fish or chicken, legumes, cheese, milk).
  
• This supports muscle maintenance, healing, and immune function.
  

Fluids & fibre

• Hydration is crucial for fatigue, bowels, and treatment tolerance.
  
• Go steady with fibre (especially if prone to constipation): oats, legumes, whole grains, fruit, veg. Increase gradually if needed and drink fluids to match (in between meals).
  

Side effects & real-life food strategies

Cancer care is not one-size-fits-all. Use these ideas like a toolbox—take what helps this week, and leave the rest.

Nausea, taste changes, metallic taste

• Cool or room-temp foods can be better tolerated.
  
• Simple, bland options (oats, toast, rice, soups) with a protein add-in (milk powder, yoghurt, eggs, tofu, chicken).
  
• Citrus, herbs, acids (lemon, vinegar) can brighten flavours if food tastes flat.
  

Constipation (common with certain drugs)

• Keep fluids up.
  
• Choose fibre-rich carbs (oats, wholegrain toast, brown rice, legumes) as tolerated.
  
• Include prunes, pears, kiwifruit, chia/flax “puddings”.
  
• Gentle movement helps bowels, if approved by your team.
  

Fatigue (very common)

• Convenience is a strategy, not a failure:
  
  • Tinned fish, frozen fish fillets, falafel, rotisserie chicken, pre-cooked lentils/beans.
    
  • Bagged salads, coleslaw kits, microwavable grain pouches.
    
  • Frozen veg mixes—nutritious, fast, and budget-friendly.
    
• Batch and bank: double a soup or curry; freeze portions for low-energy days.
  
• Ask friends to cook vegetable soups or simple plant-rich meals—and give them a preferred recipe to match your taste/tolerance.
  

Appetite swings (e.g., steroids)

• Anchor your day with three structured meals (even if small).
  
• Build meals with volume from veg + protein + fibre to help satiety.
  
• Slow down and chew well to give fullness cues time to register.
  

Hormone therapy, steroids & weight changes: a kinder path

Hormone blockers and steroids can slow metabolism and increase appetite, so some women see weight gain despite best efforts. Jane’s advice is both practical and compassionate:

• Detach health from the scale. Muscle gain and fat loss can cancel out on weight alone—body composition (and how you feel) tells a truer story.
  
• Focus on behaviours, not numbers:
  
  • Plant-rich meals, regular protein “doses,” fibre, fluids.
    
  • Strength-building movement (as cleared by your team).
    
  • Consistent meal rhythm to steady appetite.
    
• Expect ebb and flow—treatment is temporary, your wellbeing is long-term.
  

Mindful eating: calm the stress, support digestion

Cancer treatment is inherently stressful. Mindful eating won’t cure cancer, but it can lower stress, steady appetite, and aid digestion.

Try these cues:

🙏🏼 Pause before eating. Take two slow breaths. Check: What does my body need right now?

🍜 Single-task meals. Park the phone; sit down (think of “stopping the car to refuel”).

🍎 Notice first bites. If taste has changed, adjust temperature, texture, or seasoning.

🥬 Name one win per meal. “I added spinach to my toast.” Small wins compound.

Microbiome support: probiotics vs. plant diversity

The gut microbiome influences immunity and treatment tolerance. While probiotic supplements are popular, diversity from plant foods (fibre and polyphenols) appears especially supportive, as demonstrated in scietific research.

What to prioritise

• Plant diversity goal: aim for a variety across the week (veggies, fruits, whole grains, legumes, nuts, seeds, herbs, spices).
  
• Use frozen and canned options to make variety doable.
  
• If you’re on immunotherapy, discuss any probiotic supplements with your team; for many, food-first fibre is the safer default.
  

Supplements: when “less” is safer

It’s tempting to reach for bottles that promise immune boosts or anti-cancer effects. Jane’s guidance is clear: avoid routine supplements for cancer prevention or treatment unless your team has identified a deficiency or a clinical need. Some supplements can interfere with treatments or be harmful at high doses.

Safer approach

• Food first for nutrients and protective phytonutrients.
  
• Test, don’t guess: ask your doctor about checking vitamin D (and other nutrients if you’re struggling to eat).
  
• Consult your oncology team and pharmacist before starting anything new—especially antioxidants during chemo/radiation.

Make veggies (and fibre) actually happen

Only about 1 in 10 adults reach recommended vegetable intakes in Australia, so we find it hard to achieve. During treatment, “more veg” has to be practical:

1) Two meals a day with veg as a baseline (lunch and dinner; breakfast if you enjoy savoury).

2) Default sides: throw a handful of baby spinach or rocket on plates; keep cherry tomatoes, carrot sticks, or a dark leafy salad ready to go.

3) Upgrade what you already eat:

• Pre-made curry? Add chickpeas + cauliflower + kale.
• Pasta? Add mushrooms + spinach + white beans.
• Toastie? Add baked beans or leftover roasted veg.
  

4) Soups for the winter: lentil-veg, minestrone, pumpkin + red lentil. Freeze portions.

5) Frozen veg drawer = insurance policy: mixed veg, edamame, spinach, stir-fry blends.

Pantry and freezer staples for low-energy days

Stocking these makes “good enough” meals possible when you’re tired:

Protein

• Tinned tuna/salmon/sardines, eggs, Greek yoghurt, cottage cheese, firm tofu/tempeh, falafel, rotisserie chicken (freeze portions), edamame, nut butters.
  

Carbs & grains

• Microwavable brown rice/quinoa, oats, wholegrain pasta, wholemeal wraps, sourdough/wholegrain bread, potatoes/sweet potatoes.
  

Plants & flavour

• Frozen mixed veg, peas, spinach, stir-fry blends; bagged salads & slaws; tinned tomatoes; chickpeas, lentils, kidney beans; salsa, pesto, curry paste; lemon juice, vinegars, herbs/spices.
  

Quick meal ideas

• Protein toast: wholegrain toast + cottage cheese/peanut butter + sliced tomato or fruit.
  
• 5-minute bowl: brown rice pouch + edamame + frozen veg + tinned salmon + soy/tamari.
  
• Soup & toast: lentil/veg soup + wholegrain toast + yoghurt on the side.
  
• Pantry pasta: wholegrain pasta + tinned tomatoes + olives + chickpeas + spinach.
  
• Tray bake: chicken/fish + chopped veg + olive oil/herbs; serve with quinoa.
  

Let people help—tell them how

Loved ones often ask, “What can I do?” Give them a specific recipe that suits your taste and side effects—e.g., a veggie-rich soup, mild curry, or baked salmon with roast veg. People love cooking a new recipe, and you get exactly what you need.

Treatment timelines: why nutrition is a long game

Many women experience a sequence such as chemo → surgery → radiotherapy → hormone blockers (often for 5–10 years, depending on cancer type). Others may need immunotherapy; some with early-stage disease may skip chemo or radiotherapy. 

💗 The point is that nutrition is an ongoing ally, not a 2-week “fix.” Think in seasons, not days: what will help you this phase to feel stronger, steadier, and more you?

Gentle checklist you can start today

1. Eat regularly: 3 meals (and snacks if needed) to steady energy.
   
2. Dose protein: include it at each meal.
   
3. Fill half your plate with plants (fresh, frozen, or canned).
   
4. Hydrate: keep water visible; sip often.
   
5. Keep a “help list” for friends: 3 meals you’d love.
   
6. Restock your safety pantry: grains pouches, tinned fish/beans, frozen veg.
   
7. Practice one mindful cue per day (a 60-second pause before eating).
   
8. Ask your team about any supplements; test levels before you take them.
   
9. Move gently (as cleared) to support bowels, energy, and mood.
   
10. Celebrate small wins—they compound.
    

Final word: progress over perfection

As Jane reminds us, nutrition during breast cancer is about lifting, nourishing, supporting—not restriction or stress. 

Start small. Add an extra veg, a spoon of yoghurt to soup, a handful of chickpeas to dinner. 

Over weeks, these choices rebuild strength, restore confidence, and help you meet each treatment “hurdle” with more in the tank.

Tune into our full conversation on the Eating for You Podcast

FURTHER SUPPORT

If you’d like support personalising these ideas, connect with an experienced cancer dietitian. You can reach Jane here.

And if mindful eating tools would help you navigate appetite, stress, and cravings, I’m here for that too. Visit our Health Hub here.

If you know someone with breast cancer, then please share this post with them x