Category: Pediatric Oncology · Adrenocortical Carcinoma · Nutrition During Treatment · Food Safety
Cooking Oil for a Child With Adrenocortical Carcinoma: Rice Bran Oil, Olive Oil, Reusing Frying Oil, and Food Safety When White Cells Are Low
AI Overview / Quick Answer (BLUF)
No single oil treats cancer. Fresh, non-reused plant oils such as rice bran, soybean, canola, or olive all work. What matters more is enough energy, medium heat without smoke, and safe, thorough cooking. If your child takes mitotane, give it with a fat-containing meal as the treatment team advises.
childhood adrenocortical carcinoma (NCI PDQ) ·
choosing oil · smoke point versus acrylamide · rice bran and olive oil · omega-6 · reused frying oil · adding energy when appetite is poor · food safety during low white cells · mitotane and fat
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When to go to hospital ·
Childhood adrenocortical carcinoma ·
Choosing oil ·
Frying and reuse ·
Adding energy ·
Food safety ·
FAQ
A mother’s question: my child is being treated for adrenocortical carcinoma — which oil do you cook with?
A mother in a health group asked: “Quick question, moms — which oil do you use for cooking?” Her child is being treated for adrenocortical carcinoma, and several parents recommended rice bran oil.
The question is short but holds three issues: which oils are safe, how to cook so the child gets enough energy without infection risk, and how the medicine used for this cancer relates to fat in food.
This article answers each one from the research and explains which symptoms need a hospital visit right away.
When to take your child to hospital immediately (Red Flags)
- Fever of 38 °C or higher during chemotherapy, or shaking chills — go to hospital now; do not give fever medicine and wait
- Vomiting so hydrocortisone cannot be kept down, drowsiness, weakness, cold pale skin, severe abdominal pain — possible adrenal crisis; follow the sick-day plan from your doctor and go to the emergency department
- Unsteady walking, slurred speech, unusual sleepiness or confusion while on mitotane — contact the treatment team the same day
- No urine for more than 8 hours, dry mouth, repeated vomiting or diarrhea — risk of dehydration; see a doctor
- Severe abdominal pain or diarrhea with fever while white cells are low — possible bowel inflammation; needs urgent assessment
- Eating or drinking very little for more than 24 hours, or steady weight loss — tell the treatment team and dietitian
- Hot-oil burns — keep your child away from the stove; burns in a child with low immunity infect easily and need a doctor
Keep the ward or treatment team’s phone number close, and ask in advance at what temperature your child must come in.
1. Childhood adrenocortical carcinoma: the parts of treatment that touch food
Adrenocortical carcinoma is very rare in children, about 0.2–0.3 cases per million people under 20 (Ilanchezhian 2022),
and is linked to TP53 mutations in Li-Fraumeni syndrome. An international registry of 254 children (Michalkiewicz 2004) found the most common first sign was excess male hormones (84.2%).
Because these tumors often make hormones, appetite, weight, and blood sugar can shift across treatment.
The main treatment is surgery; stages 3–4 add mitotane with etoposide, doxorubicin, and cisplatin chemotherapy. The Children’s Oncology Group ARAR0332 study in 77 children (Rodriguez-Galindo 2021)
reported 5-year event-free survival of 86.2% in stage 1 with surgery alone and 81% in stage 3 with surgery plus medicines, but about one in three children with advanced disease could not finish the planned treatment because of side effects.
That is why nutrition and home care matter so much.
Mitotane and fat in food
Mitotane dissolves in water at only about 0.1 mg/L (Haider 2021), so absorption varies widely, and more than half of patients do not reach the 14 mg/L target even after months of high doses.
Treatment teams therefore usually advise taking it with meals that contain fat and check blood levels regularly. The 2024 international consensus (Riedmeier 2024) recommends levels of 14–20 mg/L.
This is where cooking oil truly connects to treatment, but the amount and timing must follow the treatment team’s instructions.
Side effects that involve food and blood lipids
Mitotane causes adrenal insufficiency in nearly everyone, so hydrocortisone replacement starts early. A review of 493 patients (Bianchini 2021) found abnormal blood lipids (higher LDL and HDL) in 54.2% and lower thyroid hormone in 45.4%.
It also commonly causes nausea and poor appetite. Choosing unsaturated fats over large amounts of animal fat or coconut cream makes sense, but cutting fat so much that your child runs short of energy does not.
2. Choosing oil: what the evidence says and what is still belief
The direct answer: no single oil treats cancer. Many fresh plant oils used the right way are fine. Differences between oils matter less than how you cook and how much your child eats.
A high smoke point does not prevent acrylamide
Acrylamide forms from sugars and the amino acid asparagine in starchy foods such as potatoes when they are fried or baked until deep brown; it does not come from oil smoke.
Mestdagh 2005 found no difference in acrylamide in fried potatoes across several oils.
In short, the type of oil does not determine acrylamide levels. To reduce it, fry only to golden, use medium heat, and serve fried starchy foods less often.
Oil heated until it smokes releases aldehydes such as acrolein (Chiang 2022), so never heat any oil to smoking.
Rice bran oil: good, but not medicine
Refined rice bran oil handles heat well, has similar amounts of monounsaturated and polyunsaturated fat, and contains gamma-oryzanol and tocotrienols.
A meta-analysis of 11 trials in adults (Jolfaie 2016) found it lowered LDL by 6.91 mg/dL and total cholesterol by 12.65 mg/dL, which is a plus if your child takes mitotane, which raises blood lipids.
But no human study shows that it fights cancer or helps children in cancer treatment more than other plant oils.
Omega-6 does not inflame the body the way many believe
A review of 15 randomized trials (Johnson 2012) found that eating linoleic acid, the main omega-6 in plant oils, did not raise blood inflammatory markers such as CRP or cytokines.
Soybean oil, which is high in omega-6, is not forbidden. What truly needs avoiding is oil that has been reused or heated until it smokes.
Olive oil: drizzle after cooking, or use for medium-heat stir-frying
Extra virgin olive oil is not as fragile as many think. Casal 2010 found that all olive oils could be used for frying for 24–27 hours before reaching the degradation limit, versus 15 hours for a vegetable oil blend.
In a simulated kitchen, olive oil also released fewer toxic emissions than soybean or palm oil. Drizzling 1 teaspoon of olive oil into cooked porridge or soup is an easy way to add energy.
Comparing cooking oils for children in cancer treatment
| Oil | Approximate smoke point | Main fat | Strengths and cautions | How to use for your child |
|---|---|---|---|---|
| Rice bran oil (refined) | About 230–250 °C | Similar monounsaturated and polyunsaturated | Contains oryzanol; lowers LDL in adults; no anti-cancer evidence | Stir-fry or fry at medium heat; use once |
| Soybean oil | About 230 °C | Polyunsaturated (omega-6 and omega-3) | Affordable and fine to use, but releases more aldehydes when heated to smoking | Medium-heat stir-frying; do not reuse for deep frying |
| Canola oil | About 200–230 °C | Monounsaturated, with omega-3 | Low in saturated fat | Stir-fry, bake, clean homemade dressings |
| Extra virgin olive oil | About 190–210 °C | Monounsaturated (omega-9) | Contains antioxidants; tolerates frying better than expected; costly | Drizzle 1 teaspoon after cooking, or medium-heat stir-fry |
| Palm oil | About 230 °C | About half saturated | Heat-stable but high in saturated fat | Occasional use; not the main oil if blood lipids are high |
| Coconut oil, coconut cream, butter, lard | About 150–200 °C | Mostly saturated | Energy-dense but raises LDL | Occasional flavoring; cook thoroughly |
Smoke points are approximate and vary with refining and oil age. Reused oil starts smoking at lower temperatures.
How serious are your child’s symptoms during treatment right now?
This check helps you see whether symptoms during cancer treatment, such as fever, poor appetite, vomiting, or fatigue, fit a pattern, how urgent they are, and when not to wait.
Analyze your severity level and get personalized guidance from our Advisory team
Take the Cancer Care Urgency Score (free)
The check sorts symptom urgency only; it is not a diagnostic tool.
3. Stir-frying, frying, and reusing oil: how to use oil safely
In Zhang 2015, frying potatoes for 600 cycles did not raise acrylamide as the oil was reused, but the peroxide value, a marker of rancidity, did rise.
In other words, the problem with reused frying oil is oxidation products and polar compounds. Many countries require discarding oil once polar compounds reach 25%.
- Fry at medium heat, about 160–175 °C; never heat oil until it smokes
- Stir-fry or shallow-fry with a little oil and use it once; do not keep frying oil for your child’s food
- Throw away oil that is dark, sticky, foams heavily, or smells rancid
- Keep oil bottles tightly closed, in a cool place away from sunlight, and use them before the expiry date
- Boil, steam, braise, or bake more often than you fry, and fry starchy foods only to golden
- Keep your child away from the stove while frying, because hot oil burns easily
4. Adding energy when appetite is poor: put fat to work
Fat provides 9 kcal per gram, compared with 4 kcal per gram from carbohydrate or protein. One teaspoon of plant oil (about 5 mL) adds about 40 kcal.
When chemotherapy or mitotane leaves your child eating only small amounts, adding healthy fat to foods they like raises energy without a bigger plate. Fat also helps absorb vitamins A, D, E, and K.
If your child takes mitotane, ask the treatment team which meal to take it with.
5. Safe food when white cells are low: no strict restrictions, but keep it clean
The 2025 international guideline for children with cancer (Phillips 2025) reviewed 8 randomized trials and recommends against strict food restrictions for children on chemotherapy, because they do not reduce infections,
while stressing that families follow their hospital’s food-safety practices. A meta-analysis of 6 studies with 1,116 patients (Sonbol 2019) likewise found no reduction in major infections with restricted diets.
A trial in 42 children aged 3–14 (Gupta 2022) found fever with low white cells in 57% of the restricted-diet group versus 43% on a normal diet, and neutropenic bowel inflammation in 33.33% versus 4.76%.
Over-restricting food may simply make your child eat less without any benefit.
Food-safety basics for children in cancer treatment
| Food group | Do | Avoid | Why |
|---|---|---|---|
| Meat, fish, eggs | Cook through; yolk and white firm | Sushi, raw fish, raw meat salads, soft-boiled or runny eggs | Reduces Salmonella and other germs in raw food |
| Fruit and vegetables | Wash under running water, peel, wash thick-skinned fruit like avocado before cutting | Bruised or moldy fruit, raw sprouts | Reduces germs on the skin |
| Milk and dairy | Choose pasteurized or UHT milk | Raw milk, unpasteurized cheese | Reduces Listeria |
| Leftovers | Refrigerate within 2 hours; reheat until steaming hot throughout | Food left out overnight, reheating many times | Germs multiply quickly at room temperature |
| Eating out | Choose freshly cooked dishes served hot | Buffets, food left standing, ice of unknown quality | Hygiene is hard to control |
| Oils and condiments | Keep bottles closed and cool; use clean spoons | Rancid oil, reused frying oil, moldy condiments | Reduces oxidation products and mold |
If your child’s hospital has specific rules, for example after a bone marrow transplant, follow those rules first.
Comparing nutrition approaches during treatment
| Approach | Who it suits | Evidence | Things to know |
|---|---|---|---|
| Strict restricted diet (neutropenic diet) | Not recommended as a general approach | Does not reduce infections (Phillips 2025, Sonbol 2019) | May reduce how much the child eats |
| Food-safety basics | Every child on chemotherapy | Set as baseline practice by the 2025 guideline | Cook thoroughly, wash hands, refrigerate, follow hospital rules |
| Extra energy from plant oil and protein | Children with poor appetite or weight loss | Fat provides 9 kcal per gram | If blood lipids are high, choose unsaturated fats |
| Pediatric medical nutrition formulas | Persistently low intake | Used after a dietitian’s assessment | Choose a formula by age and other conditions |
| Tube feeding | Marked weight loss, not enough by mouth | Standard care for children in cancer treatment who cannot eat enough | Not a parenting failure; it helps complete treatment |
| Taking mitotane with a fat-containing meal | Children on mitotane | Very poor water solubility, variable absorption (Haider 2021) | Follow the treatment team; check levels of 14–20 mg/L |
| Hydrocortisone replacement and a sick-day plan | Children on mitotane or after adrenal surgery | Teaching parents to raise the dose when ill helps prevent crises (Bizzarri 2023) | Never stop it yourself; ask for the plan for fever or vomiting |
| Herbs, extracts, or high-dose antioxidants | Do not start on your own | No evidence in childhood adrenocortical carcinoma | May interact with chemotherapy or be contaminated; ask the team first |
Generic drug names only. Changes to food, medicines, or supplements should go through the treatment team and dietitian.
Common beliefs versus the evidence
“High-smoke-point oil prevents the carcinogen acrylamide”
The type of oil does not determine acrylamide. It comes from starchy food fried until deep brown. Fry only to golden and never let oil smoke.
“Omega-6 in plant oils triggers inflammation”
Fifteen randomized trials found linoleic acid did not raise blood inflammatory markers. Reused frying oil is what to avoid.
“Food must be completely sterile and fresh produce banned”
The 2025 guideline recommends against strict restrictions. Washed and peeled fruit and vegetables are fine unless your hospital has specific rules.
“Rice bran oil fights cancer”
It lowers LDL in adults, but there is no human evidence that it fights cancer. It is a good oil, not a medicine.
“Children with cancer should avoid fat”
Children in cancer treatment often need more energy while eating less. Healthy fat helps, and mitotane needs fat in the meal to be absorbed.
Frequently Asked Questions (FAQ)
Which cooking oil should I use for a child with adrenocortical carcinoma?
Many fresh plant oils that are not reused work well, such as rice bran, soybean, canola, or olive oil. No study shows that any particular oil treats adrenocortical carcinoma in children. What matters more is enough energy, medium heat so the oil never smokes, thorough and clean cooking, and asking the hospital dietitian how much fat suits your child.
Is rice bran oil really better than other oils?
Rice bran oil handles heat well and contains gamma-oryzanol and vitamin E. A meta-analysis of 11 trials in adults found it lowered LDL cholesterol by about 6.9 mg/dL. But there is no evidence that it fights cancer or helps children in cancer treatment more than other plant oils, so it is a good choice, not the only one.
Does a high-smoke-point oil prevent acrylamide?
Not directly. Acrylamide forms when starchy foods are fried or baked until deep brown or burnt. Studies comparing many oils found no difference in acrylamide in fried potatoes. To reduce it, fry at medium heat only to golden, and boil, steam, or braise more often. Oil heated until it smokes releases aldehydes, which should also be avoided.
Does my child need a strict diet when white cells are low?
A 2025 international guideline that reviewed 8 randomized trials recommends against strict food restrictions for children on chemotherapy, because they do not reduce infections. A trial in 42 children even found more bowel inflammation in the restricted-diet group. What helps is food safety: cook thoroughly, wash hands, refrigerate food, and follow your hospital’s rules.
Can I reuse frying oil?
Best avoided. Reused oil builds up polar compounds and oxidation products. Throw oil away if it is dark, sticky, foams heavily, or smells rancid. For a child in treatment, stir-fry or shallow-fry with a little oil and use it once, and keep oil bottles tightly closed in a cool place away from sunlight.
My child has a poor appetite. How can I add energy with fat safely?
Fat provides 9 kcal per gram, about twice as much as carbohydrate or protein. Adding 1 teaspoon of plant oil to rice porridge, soup, or cooked vegetables adds about 40 kcal without increasing portion size. Offer small, frequent meals with protein and weigh your child weekly. If weight falls or intake stays low, ask the dietitian about pediatric medical nutrition or tube feeding.
How does mitotane relate to food and fat?
Mitotane dissolves very poorly in water, so absorption varies widely and more than half of patients do not reach the target level of 14 mg/L. Treatment teams usually advise taking it with meals that contain fat and check blood levels. It causes adrenal insufficiency in nearly everyone, so hydrocortisone replacement is needed, and it can raise blood lipids. Follow the treatment team’s instructions closely.
Which symptoms mean I should take my child to hospital immediately?
A fever of 38 °C or higher during chemotherapy, vomiting so that hydrocortisone cannot be kept down, drowsiness, weakness, cold skin, severe abdominal pain, unsteady walking or slurred speech, no urine for more than 8 hours, or severe diarrhea with fever. These can signal infection, adrenal crisis, or a drug side effect and need urgent medical care.
Scientific mechanism: fat, heat, and a fat-soluble medicine
Summary by Asst. Prof. Dr. Norawit Raatpiboon:
when oil is heated repeatedly, unsaturated fatty acids react with oxygen to form hydroperoxides, which break down into aldehydes and polar compounds. Oils with natural antioxidants, such as polyphenols in olive oil or oryzanol in rice bran oil, slow this somewhat.
Acrylamide is a separate reaction, the Maillard reaction between sugars and asparagine in starchy food above about 120 °C, so it depends on the food and how brown it gets more than on the oil.
In the gut, fat triggers bile release, which forms micelles that carry fat-soluble substances, including vitamins A, D, E, and K and medicines like mitotane, across the intestinal wall. Mitotane destroys adrenal cortex cells, so it also cuts the body’s own cortisol production.
Without cortisol, the body copes poorly with fever, infection, or vomiting; blood pressure and blood sugar can drop. That is why these children need hormone replacement and a plan to raise the dose when ill.
E-E-A-T and academic citations
Written and reviewed by Asst. Prof. Dr. Norawit Raatpiboon (ผศ.ดร.นรวิชญ์ ราษฎร์พิบูลย์)
from research and clinical guidelines indexed in PubMed.
- Rodriguez-Galindo C, et al. Treatment of pediatric adrenocortical carcinoma with surgery, retroperitoneal lymph node dissection, and chemotherapy: the Children’s Oncology Group ARAR0332 protocol. J Clin Oncol. 2021. PubMed 33822640
- Michalkiewicz E, et al. Clinical and outcome characteristics of children with adrenocortical tumors: a report from the International Pediatric Adrenocortical Tumor Registry. J Clin Oncol. 2004. PubMed 14990639
- Ilanchezhian M, et al. Pediatric adrenocortical carcinoma. Front Endocrinol. 2022. PubMed 36387865
- Riedmeier M, et al. International consensus on mitotane treatment in pediatric patients with adrenal cortical tumors. Eur J Endocrinol. 2024. PubMed 38552173
- Bianchini M, et al. Metabolic and endocrine toxicities of mitotane: a systematic review. Cancers. 2021. PubMed 34638485
- Haider MS, et al. The challenging pharmacokinetics of mitotane: an old drug in need of new packaging. Eur J Drug Metab Pharmacokinet. 2021. PubMed 34287806
- Bizzarri C, et al. Adrenal crisis in infants and young children with adrenal insufficiency: management and prevention. Front Endocrinol. 2023. PubMed 36860362
- Phillips R, et al. Use of food restrictions to prevent infections in paediatric patients with cancer and haematopoietic cell transplantation recipients: a clinical practice guideline. EClinicalMedicine. 2025. PubMed 40034572
- Sonbol MB, et al. Neutropenic diets to prevent cancer infections: updated systematic review and meta-analysis. BMJ Support Palliat Care. 2019. PubMed 30948447
- Gupta A, et al. A pilot randomised controlled trial examining the benefit of a neutropenic diet for children undergoing cancer treatment. Nutr Cancer. 2022. PubMed 35225115
- Mestdagh FJ, et al. Influence of oil type on the amounts of acrylamide generated in a model system and in French fries. J Agric Food Chem. 2005. PubMed 16029013
- Zhang H, et al. Influence of deep-frying using various commercial oils on acrylamide formation in French fries. Food Addit Contam Part A. 2015. PubMed 25953074
- Chiang KM, et al. Particulate matters, aldehydes, and polycyclic aromatic hydrocarbons produced from deep-frying emissions: comparisons of three cooking oils. NPJ Sci Food. 2022. PubMed 35660737
- Casal S, et al. Olive oil stability under deep-frying conditions. Food Chem Toxicol. 2010. PubMed 20678538
- Jolfaie NR, et al. Rice bran oil decreases total and LDL cholesterol in humans: a systematic review and meta-analysis of randomized controlled clinical trials. Horm Metab Res. 2016. PubMed 27311126
- Johnson GH, Fritsche K. Effect of dietary linoleic acid on markers of inflammation in healthy persons: a systematic review of randomized controlled trials. J Acad Nutr Diet. 2012. PubMed 22889633
Medical disclaimer
This article is educational information, not a diagnosis, prescription, or individual medical advice.
Every child in cancer treatment has different food needs and limits. Talk to the treatment team and hospital dietitian before changing diet, using supplements, or adjusting when medicines are taken.
If your child has any of the red flag symptoms, take them to a doctor immediately.