Food Sensitivities and Food Allergies: How False Perceptions Can Disrupt Nourishment and Exacerbate Eating Disorders 

Thrive • May 10, 2022

By Thrive Waco Registered Dietitians Courtney Anderson M.S., RD, LD, CLC, and Sheridan Faye Glaske, M.S., RDN, LD

The diet industry has put its twist on the topic of food allergies in an effort to leverage yet another misleading strategy for unhealthy weight loss, and subsequently encouraging dangerous elimination diets unsupported by clinical evidence. With this latest tactic by diet culture , more and more individuals are misled and mistakenly believe they are food allergic. Research suggests that nearly 19% of U.S. adults believe they have a food allergy, but only 11% percent of U.S. adults are actually diagnosed with one. While food allergies are real and can be dangerous, the implications of eliminating foods from one’s diet without professional guidance can also be detrimental. For individuals struggling with eating disorders , the fad of food allergies can be especially disruptive to their relationship with food, providing them with a fashionable, yet extremely hazardous, excuse to neglect to nourish their bodies. 

FOOD ALLERGIES: POTENTIALLY LIFE-THREATENING REACTIONS

A food allergy occurs when the body’s immune system mistakenly attacks a usually harmless protein found in food. 

The most common food allergies include:

  • Peanuts
  • Tree nuts
  • Wheat
  • Soy
  • Eggs
  • Milk
  • Fish
  • Shellfish

Symptoms of food allergies include:

  • Hives
  • Itching
  • Swelling
  • Wheezing
  • Dizziness
  • Trouble breathing and swallowing

Food allergies are serious and if symptoms are severe enough, anaphylaxis can occur, which can be life-threatening. 

FOOD SENSITIVITIES: TRENDY, BUT DISRUPTIVE TO NOURISHMENT

As the topic of food allergies has garnered more mainstream attention, the practice of self-diagnosing food sensitivities — a milder food intolerance — has also become popular. While specific foods can in fact cause digestive upset for some, the self-diagnosis of food sensitivities isn’t supported by consistent clinical findings and is not recommended by experts.  

In extreme cases, the false perception of food sensitivities may encourage affected individuals to unnecessarily eliminate a wide variety of foods from their diet. When a person experiencing gastrointestinal issues mistakenly attributes their symptoms to a food sensitivity, they may overlook the underlying causes of their digestive struggles. To make matters worse, their limited dietary intake may begin to negatively affect their well-being.

FOOD ALLERGIES, FOOD SENSITIVITIES, AND EATING DISORDERS

For those struggling with eating disorders, falsely  believing they have food allergies or food sensitivities can be arguably more dangerous than food allergies themselves. 

These uncomfortable gastrointestinal symptoms include:

  • Constipation
  • Diarrhea
  • Bloating
  • Acid reflux
  • Nausea

Attributing their gastrointestinal symptoms to food allergies or sensitivities may provide them with what they believe to be a simpler and perceivably more socially acceptable explanation. However, this is risky for many reasons. Before exploring any food allergies or sensitivities, a person struggling with an eating disorder should undergo dietary assessment, nutritional rehabilitation, and weight restoration guided by an experienced and multidisciplinary treatment team that takes all aspects of well-being into consideration. Most often, once an individual eats a wide variety of foods adequately and consistently for a sustained period, any digestive symptoms diminish and eventually disappear. 

TREATING TRUE FOOD ALLERGIES AND SENSITIVITIES

Using different tests to identify food allergies and their severity, only qualified allergists can accurately diagnose food allergies. Although trendy, at-home tests aren’t effective or accurate ways to identify food allergies and sensitivities.

Treating true food allergies requires individuals to abstain from eating the food to which they’re allergic. However, when this is the case for those with eating disorders, close planning and monitoring by a registered dietitian is necessary to ensure the avoidance doesn’t lead to any nutrient deficiencies. 

It’s important to distinguish between a food allergy and a mild sensitivity. For those with sensitivities to foods such as dairy, dietitians often encourage eating small doses of lactose-containing foods. By treating food sensitivities this way, it’s possible to decrease one’s symptoms, prevent complete intolerance, and avoid any unnecessary elimination of nutrients.

FOOD FREEDOM AT THRIVE

Thrive offers integrated eating disorder treatment as well as outpatient nutritional support that emphasizes adequacy, balance, and choice so that individuals can develop a more peaceful, intuitive, and autonomous relationship with food. Reach out to learn more. 

About the Authors

Thrive Waco Registered Dietitian Courtney Anderson M.S., RD, LD, CLC

Courtney is a Registered Dietitian Nutritionist and Certified Lactation Counselor passionate about helping clients use food as a tool for health and joyful living. Her practice is built around the marriage of medical nutrition therapy with the principles of Intuitive Eating.

She began studying nutrition science because of her fascination with food and the body. In her practice, she hopes to educate and empower others to harness the awesome benefits of the food around them, and to provide them valuable skills to apply nutrition principles in their everyday life.

By marrying her experience of disordered eating with her knowledge of medical nutrition therapy and her skills as an adjunct lecturer at the university level, she has been able to create a holistic approach to health and wellness for clients that focuses on education and practicing new skills that not only improve her clients’ health but also their relationship with food and body.

Thrive Waco Registered Dietitian Sheridan Faye Glaske, M.S., RDN, LD

With both a bachelor’s degree in exercise physiology and a master’s degree in nutrition sciences from Baylor University, Sheridan Glaske wears her Baylor Bear pride proudly. Throughout her career in health and wellness, she has served as an exercise physiologist, a lifetime fitness adjunct lecturer at Baylor University, and a certified yoga and barre instructor. She recently completed the 1200-hour Wellness Workdays Dietetic Internship program and has joined Thrive Wellness Waco as a registered dietitian. At Thrive, she offers her experience, expertise, and passion for complete well-being to individuals recovering from eating disorders, disordered eating behaviors, and perinatal mental health concerns.

As a former fad-dieter who valued being thin over being healthy and happy, Sheridan struggled with an undiagnosed eating disorder. Her education and experience have taught her that as a society, disordered eating and exercise habits are normalized while the emotional, psychological, and social aspects of health are neglected.

In a world where diet culture is deceiving and dangerous, it can be difficult to determine who to turn to and which resources to trust. Sheridan finds great fulfillment in supporting others through sharing sound advice and evidence-based practices that challenge the unrealistic ideals of diet culture. She advocates for the Health At Every Size (HAES) movement and promotes that one does not need to be a specific size or weight to be healthy. Sheridan wants her clients to know that they are not alone and to believe deep down that they are worthy of receiving support.

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November 11, 2025
Are you looking for a meaningful way to give back this holiday season? Thrive Wellness is excited to continue our 6th Annual Giving Tree Program in collaboration with Perenn Bakery this winter. This year, Thrive Wellness Reno and Perenn Bakery are proud to partner with Ronald McDonald House Charities® of Northern Nevada. The organization supports families with children receiving treatment at area hospitals, providing comfort, hope, and a home-away-from-home during challenging times. Ronald McDonald House Charities offers essential services, removes barriers, strengthens families, and promotes healing when children need healthcare the most. How It Works Simply take one (or a few) tags from the Giving Tree, each listing an item you can purchase and donate for residents of the Ronald McDonald House. Then, drop off your item(s) at one of our designated donation locations by Friday, December 19. Items Needed: Restaurant gift cards Walmart or Target gift cards Games, puzzles, and coloring books Toys (Barbie, Hot Wheels, Lego sets, craft sets, magnet blocks, baby dolls, action figures, journals, infant toys, etc.) Children's books (picture, chapter, and graphic novels) Toiletry sets (for adults) Lotion/self-care gift sets (for adults) Sweatshirts/hoodies (adults, XS-XXL) Scarves, gloves, fuzzy socks, pajamas (all sizes) Infant diapers, onesies, and baby bottles Bulk individually wrapped snacks (granola bars, chips, etc.) Please ensure all donations are new, in original packaging, and unwrapped. Donation Drop-Off Locations Please deliver donations by Friday, December 19, to one of the following sites: Thrive Wellness 491 Court St., Reno, NV 89501 201 W Liberty St., Suite 201, Reno, NV 89501 Perenn Grocery 7600 Rancharrah Pkwy, Suite 130, Reno, NV 89511 Perenn Rancharrah 7750 Rancharrah Pkwy, Suite 110, Reno, NV 89511 Perenn Midtown 20 St. Lawrence Ave, Reno, NV 89509 Claio Rotisserie 3886 Mayberry Dr., Suite D, Reno, NV 89519 Why We Give Back Through our Giving Tree program, we’re honoring one of our core values at Thrive Wellness: staying rooted in community. This annual tradition allows us to give back to those who need support most during the holiday season. We invite you to join us by taking a tag at any Thrive or Perenn location and helping spread kindness throughout our community. There’s no better way to embrace the holiday spirit than by supporting local families with thoughtful, heartfelt donations. We are deeply grateful for your generosity and continued support. Thank you for helping us make a difference!
September 22, 2025
Eating disorders are one of the most serious mental health concerns facing today’s adolescents. They can affect every aspect of a young person’s life, including their physical health, school performance, relationships, self-esteem, and more. According to the National Institute of Mental Health, about 2.7% of adolescents in the U.S. will experience an eating disorder in their lifetime, and many more engage in disordered eating behaviors that may not meet full diagnostic criteria. The good news is that providers are in an influential position to notice early warning signs, open conversations, and connect families to support before these patterns of behavior become too engrained. Why Early Intervention Matters The earlier an eating disorder is identified and treated, the better the treatment outcomes. Research shows that getting support quickly after the disorder’s onset is linked to faster recovery, lower relapse rates, and healthier long-term development (Treasure & Russell, 2011). Waiting too long to seek help can mean medical complications, deeply ingrained behaviors, and a more difficult path to healing. For many adolescents, a caring provider who notices the signs and advocates for treatment can make all the difference in recovery and can even save lives. Recognizing Early Warning Signs Adolescents may not always disclose their struggles directly, so providers should keep an eye out for a range of indicators: Physical signs: noticeable weight changes, menstrual irregularities, digestive issues, dizziness, or fatigue. Behavioral patterns: skipping meals, restrictive eating, excessive exercise, frequent dieting, eating in secret, or leaving for the bathroom after meals. Emotional and cognitive signs: preoccupation with weight or body shape, food rituals, heightened anxiety around eating, or perfectionistic tendencies. It’s important to remember that eating disorders don’t always “look” a certain way. Teens can be distressed about food and body image even if their weight appears to be within a “normal” range. Screening Tools and Assessments Using free screening tools available online can be an effective way to gauge a patient’s needs and gain further insight on treatment options for a possible eating disorder. Here are 4 free screening resources we recommend you use before making a referral for a higher level of care. EDE-Q (Eating Disorder Examination Questionnaire) : helps assess eating attitudes and behaviors. Nine Item Avoidant/Restrictive Food Intake disorder screen (NIAS) : helps to assess the signs of ARFID in children. Eat 26 Screening Tool : a screening measure to help you determine attitudes towards food and eating. BEDS-7 (Binge Eating Disorder Screener) : for situations where binge eating is suspected. When possible, gathering input from parents, teachers, or coaches can also help, as teens may minimize their experiences out of fear or shame. The Role of Primary Care and Pediatric Providers Routine checkups are often where eating disorders first come to light. Providers treating children, teen, and adolescents can: Incorporate simple questions about eating habits and body image into wellness visits. Track growth charts and weight trends while pairing them with questions about mood, anxiety, and behavior. Foster trust by creating a safe, nonjudgmental space where adolescents feel comfortable sharing sensitive information and know there will be no weight stigma. Coordinating Multidisciplinary Care Supporting a young person with an eating disorder works best when care is collaborative . In order to treat the whole person, there are usually multiple members of a treatment team needed, including: Medical support: monitoring vital signs, lab work, and physical health. Therapeutic care: evidence-based approaches such as family-based therapy (FBT) and cognitive-behavioral therapy (CBT) help address thoughts and behaviors. Nutritional guidance: dietitians provide education, meal support, and reassurance. Family involvement: engaging caregivers empowers them to support recovery in everyday life. Addressing Barriers and Stigma Many families face challenges in seeking help, whether due to stigma, lack of awareness, or limited access to specialists. To help, providers can: Normalize conversations about body image and mental health as part of overall well-being. Use culturally sensitive approaches that honor diverse experiences with food, body, and health. Connect families to community organizations, online resources, or telehealth when in-person specialty care is limited. Eating disorders in adolescents are serious, but with early recognition and timely support, recovery is possible. Providers are often the first to notice changes and can play a vital role in opening doors to crucial support. By blending professional expertise with empathy and collaboration, providers can guide adolescents and their families toward lasting recovery and a healthier future. References National Institute of Mental Health. (2023). Eating Disorders . Treasure, J., & Russell, G. (2011). The case for early intervention in anorexia nervosa: theoretical exploration of maintaining factors. The British journal of psychiatry : the journal of mental science, 199(1) , 5–7.
By Julia Actis, LCSW September 11, 2025
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