Candy, Sweets and Halloween Treats: Common Side Effects of Pediatric Cancer

Smiling child wearing a backward baseball cap holding two decorated cupcakes with colorful candy toppings indoors.

Cancer treatment often comes with many unfortunate side effects. On special days like Halloween, where candy and treats take center stage, food-related side effects can make a child who is battling cancer feel left out at an already challenging time.

If your child or a child in your community is being treated for cancer, take some time to identify any side effects related to appetite and taste that they may be experiencing. Nausea, dry mouth, and swallowing issues are all common side effects of cancer treatments. With a little forethought, and some simple modifications and tricks you can help make sure that Halloween is a treat for all!

Strange Taste to Foods

Some chemotherapy medications and radiation therapies may cause changes in the way things taste. These taste changes may result in lack-of-taste or a metallic or acidic taste.

  • Acidic foods can help stimulate the taste buds so try offering acidic or fruit flavored candies like Skittles, Starburst, Lemonheads or Sour Patch Kids.

Mouth Sores

Mouth sores are a common challenge for cancer patients which can result in oral discomfort and pain with swallowing. If a child is dealing with mouth sores, but still feels up to eating a little candy, look for creamy candies served at room temperature.

  • Milk chocolate bars, Hershey Kisses and Reese’s Peanut Butter Cups all have mild flavors and textures that may be appealing to children with mouth sores.

Nausea, Loss of Appetite, and Digestive Challenges

Another common side effect of cancer treatment is a loss of appetite, which occurs when you are not feeling hunger cues in the way you normally would. Children may also feel nauseous or have more upsetting digestive symptoms.

  • Prepare to eat treats by eating small meals and frequent snacks throughout the day. Candy on an empty stomach can enhance digestive symptoms.

  • Offering non-food treats such as stickers, small toys, or pencils to trick-or-treaters can help children with any food-related concerns participate and feel included. If your child will be trick-or-treating in your community talk to your neighbors about having some non-candy items on hand.

For more information about managing food-related cancer treatment side-effects visit this nutrition resource page from the Culinary Fights Cancer Foundation

Portrait of Emily Tewksbury, MS, RDN, LD, smiling in front of a backdrop for The Joe Baab Culinary Fights Cancer Foundation.

Contributed by: Emily Tewksbury, MS, RDN, LD. Emily is a registered dietician and owner of Rebalance Nutrition, a nutrition counseling private practice for adolescents and adults. In her role with the Joe Baab Culinary Fights Cancer Foundation, Emily helps create recipes and find creative culinary solutions for cancer patients whose appetites and taste preferences have been impacted by their treatment.

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DISCLAIMER: The resources listed on this site are not meant to replace medical advice or the consultation of your child’s physician or care team. Please consult a trusted medical professional before making any medical care decisions for yourself or your child.

The following trademarks used herein are owned by McDonald’s Corporation and its affiliates; McDonald’s, Ronald McDonald House Charities, Ronald McDonald House Charities Logo, Ronald McDonald House, Ronald McDonald Family Room, and Ronald McDonald Care Mobile.

Ronald McDonald House Charities® of Northeast Ohio, Inc. is recognized as a public charity under Internal Revenue Code section 509(a) and has 501(c)(3) status. Donations to Ronald McDonald House Charities® of Northeast Ohio, Inc. are deductible. Donors should consult their tax advisor for questions regarding deductibility. The Ronald McDonald House Charities® of Northeast Ohio, Inc. EIN is 34-1269123. A copy of the Ronald McDonald House Charities® of Northeast Ohio, Inc. determination letter is available upon request.

©2026 Ronald McDonald House of Northeast Ohio, Inc. All Rights Reserved.

Looking for More?

Search the full resource database.

DISCLAIMER: The resources listed on this site are not meant to replace medical advice or the consultation of your child’s physician or care team. Please consult a trusted medical professional before making any medical care decisions for yourself or your child.

The following trademarks used herein are owned by McDonald’s Corporation and its affiliates; McDonald’s, Ronald McDonald House Charities, Ronald McDonald House Charities Logo, Ronald McDonald House, Ronald McDonald Family Room, and Ronald McDonald Care Mobile.

Ronald McDonald House Charities® of Northeast Ohio, Inc. is recognized as a public charity under Internal Revenue Code section 509(a) and has 501(c)(3) status. Donations to Ronald McDonald House Charities® of Northeast Ohio, Inc. are deductible. Donors should consult their tax advisor for questions regarding deductibility. The Ronald McDonald House Charities® of Northeast Ohio, Inc. EIN is 34-1269123. A copy of the Ronald McDonald House Charities® of Northeast Ohio, Inc. determination letter is available upon request.

©2026 Ronald McDonald House of Northeast Ohio, Inc. All Rights Reserved.

Looking for More?

Search the full resource database.

DISCLAIMER: The resources listed on this site are not meant to replace medical advice or the consultation of your child’s physician or care team. Please consult a trusted medical professional before making any medical care decisions for yourself or your child.

The following trademarks used herein are owned by McDonald’s Corporation and its affiliates; McDonald’s, Ronald McDonald House Charities, Ronald McDonald House Charities Logo, Ronald McDonald House, Ronald McDonald Family Room, and Ronald McDonald Care Mobile.

Ronald McDonald House Charities® of Northeast Ohio, Inc. is recognized as a public charity under Internal Revenue Code section 509(a) and has 501(c)(3) status. Donations to Ronald McDonald House Charities® of Northeast Ohio, Inc. are deductible. Donors should consult their tax advisor for questions regarding deductibility. The Ronald McDonald House Charities® of Northeast Ohio, Inc. EIN is 34-1269123. A copy of the Ronald McDonald House Charities® of Northeast Ohio, Inc. determination letter is available upon request.

©2026 Ronald McDonald House of Northeast Ohio, Inc. All Rights Reserved.