Research shows that weight bias is widespread among dietitians in British Columbia, with 90% displaying mild to moderate negative views about weight and 78% unconsciously favoring thin people. According to Gram Research analysis of this cross-sectional study of 42 registered dietitians, weight bias increased with years of professional experience, suggesting that systemic factors in healthcare may reinforce these biases over time. These findings highlight the need for targeted training to help nutrition professionals recognize and overcome weight bias.
A new study from British Columbia looked at whether dietitians, the health professionals who help people with nutrition, have biases against people with larger bodies. Researchers surveyed 42 registered dietitians and found that most of them held some negative views about weight. According to Gram Research analysis, about 9 out of 10 dietitians showed mild to moderate weight bias, and nearly 8 out of 10 had an unconscious preference for thin people. The study also found that dietitians with more years of experience tended to have stronger weight biases. These findings suggest that the healthcare system may need to train dietitians to recognize and overcome these biases so they can provide better care to all their patients.
Key Statistics
A 2026 cross-sectional study of 42 registered dietitians in British Columbia found that 90.5% displayed mild to moderate fat phobia, with a mean Fat Phobia Scale score of 3.06 out of a possible range.
According to research reviewed by Gram, 78.3% of the 42 dietitians studied showed an unconscious preference for thin people on the Implicit Association Test, a validated measure of implicit bias.
A 2026 study of 42 British Columbia dietitians found a significant positive correlation between years of practice and weight bias scores, with more experienced dietitians showing stronger biases than those newer to the profession.
Research from 2026 involving 42 registered dietitians showed that those with moderate thin preference had a median of 13 years of practice experience, compared to 2.5 years for those with no weight preference, indicating bias increases with career length.
The Quick Take
- What they studied: Whether dietitians in British Columbia hold negative beliefs about people with larger bodies, and whether their personal characteristics affect these beliefs.
- Who participated: 42 registered dietitians working in hospitals across three health authorities in British Columbia. These are licensed nutrition professionals who work in the healthcare system.
- Key finding: About 90% of dietitians showed mild to moderate negative views about weight, and 78% unconsciously favored thin people. Dietitians with more experience had stronger weight biases than those newer to the profession.
- What it means for you: If you see a dietitian for nutrition help, they may have unconscious biases that could affect the quality of care they provide. This research suggests the healthcare system should provide training to help dietitians recognize and address these biases. However, this study was small and only looked at one region, so more research is needed.
The Research Details
Researchers sent an online survey to 252 dietitians working in hospitals in British Columbia. The survey included two validated tools that measure weight bias. The first tool, called the Fat Phobia Scale, asks questions about beliefs and feelings toward people with larger bodies. The second tool, called the Implicit Association Test, measures unconscious preferences by asking people to quickly match words and images. This type of test can reveal biases people don’t realize they have. Only 42 dietitians completed the survey, which is a relatively small response rate. The researchers then analyzed the results using statistical methods to look for patterns and connections between the survey responses and the dietitians’ background information.
This research approach is important because it uses validated tools that have been tested and proven to measure weight bias accurately. The Implicit Association Test is particularly valuable because it measures unconscious biases that people might not admit to or even realize they have. Understanding whether healthcare professionals hold these biases matters because research shows that bias can affect the quality of care patients receive. If dietitians unconsciously favor thin people, they might provide different advice or show less empathy to patients with larger bodies.
This study has some important limitations to consider. The response rate was low, with only 42 out of 252 dietitians completing the survey. This means the results may not represent all dietitians in the region. The study only looked at one province in Canada, so the findings may not apply to other areas. The researchers used validated, well-established tools for measuring bias, which is a strength. However, the small sample size means the results should be viewed as preliminary findings that need confirmation from larger studies.
What the Results Show
The study found that weight bias is common among dietitians in British Columbia. About 90% of the dietitians surveyed showed mild to moderate fat phobia, meaning they held some negative views about people with larger bodies. The average score on the Fat Phobia Scale was 3.06 out of a possible range, indicating mild to moderate bias. The Implicit Association Test revealed that 78% of dietitians had an unconscious preference for thin people over people with larger bodies. This means that even if dietitians consciously believe they should treat all patients equally, their automatic, unconscious reactions favor thin people. These findings suggest that weight bias is deeply ingrained in the profession, affecting most of the dietitians studied.
An important secondary finding was the relationship between years of experience and weight bias. Dietitians who had been practicing longer showed stronger weight biases than those newer to the profession. Specifically, dietitians with no weight preference or strong fat preference had worked in the field for an average of 2.5 years, while those with moderate thin preference had worked for an average of 13 years. This suggests that weight bias may increase over time in the profession, possibly due to repeated exposure to diet culture messages or burnout. The study also found that demographic characteristics like age and gender were not significantly associated with weight bias levels.
This study adds to a growing body of research showing that weight bias exists among healthcare professionals. Previous studies have found similar biases among doctors, nurses, and other healthcare workers. What makes this study unique is its focus specifically on dietitians, who are nutrition specialists. The findings align with concerns raised by patient advocacy groups and researchers who argue that weight bias in healthcare can harm patients by reducing trust, discouraging people from seeking care, and leading to lower quality treatment. This research supports the idea that weight bias is a systemic problem in healthcare that requires targeted interventions.
The study has several important limitations. First, the sample size is small (42 dietitians), which means the results may not accurately represent all dietitians in British Columbia or other regions. Second, the response rate was low (about 17%), which raises questions about whether the dietitians who responded are different from those who didn’t. Third, the study only included dietitians in hospitals in one Canadian province, so the findings may not apply to dietitians in other settings or countries. Fourth, the study is descriptive and cannot prove that weight bias causes poor patient outcomes, only that it exists. Finally, the Implicit Association Test, while validated, has been criticized by some researchers as not perfectly measuring unconscious bias.
The Bottom Line
Healthcare organizations should implement training programs to help dietitians recognize and address their weight biases. This training should be evidence-based and include education about how bias affects patient care. Dietitians should be encouraged to reflect on their own beliefs about weight and body size. Organizations should also consider implementing policies that promote inclusive, respectful care for patients of all body sizes. These recommendations are supported by the research findings but should be implemented thoughtfully, as this is a preliminary study with a small sample size.
Patients with larger bodies who work with dietitians should be aware that their healthcare provider may hold unconscious biases. Healthcare administrators and policy makers should care about these findings because they suggest a need for systemic change in how dietitians are trained and supported. Other healthcare professionals should also consider whether similar biases exist in their fields. Dietitians themselves should care about this research as an opportunity to improve their practice and provide better care to all patients. People interested in healthcare equity and reducing discrimination in medicine should pay attention to these findings.
Implementing bias training and seeing changes in dietitian attitudes and patient care would likely take several months to a year or more. Individual dietitians who complete training might show changes in their awareness and behavior relatively quickly, but systemic change across healthcare organizations would take longer. Patients may not notice immediate differences, but over time, if organizations implement these interventions, the quality of care for people with larger bodies should improve.
Frequently Asked Questions
Do dietitians have weight bias?
Research shows that weight bias is common among dietitians. A 2026 study of 42 registered dietitians in British Columbia found that 90% had mild to moderate negative views about weight, and 78% unconsciously favored thin people over people with larger bodies.
How does a dietitian’s experience level affect their weight bias?
According to a 2026 study of 42 dietitians, weight bias increased with years of professional experience. Dietitians with 13 years of experience showed stronger biases than those with 2.5 years of experience, suggesting that bias may develop or strengthen over a career.
What is the Implicit Association Test and why does it matter?
The Implicit Association Test measures unconscious biases by asking people to quickly match words and images. It matters because it reveals automatic preferences people may not realize they have. In this study, 78% of dietitians showed unconscious preference for thin people, even if they consciously believe in treating all patients equally.
Can weight bias in healthcare actually harm patients?
Research suggests that healthcare provider bias can reduce patient trust, discourage people from seeking care, and lead to lower quality treatment. While this study doesn’t directly measure patient harm, it identifies a problem that research shows can negatively affect health outcomes.
What can be done to reduce weight bias among dietitians?
The study suggests that healthcare organizations should implement evidence-based training programs to help dietitians recognize and address their weight biases. This could include education about how bias affects patient care and policies promoting inclusive, respectful treatment of patients of all body sizes.
Want to Apply This Research?
- Users could track their experiences with healthcare providers by rating whether they felt respected and received unbiased nutrition advice. They could note specific comments or behaviors that felt judgmental and track changes over time as they work with different providers.
- Users could use the app to find and connect with weight-neutral or Health at Every Size (HAES) aligned dietitians in their area. The app could provide a checklist of questions to ask potential dietitians about their approach to weight and body diversity, helping users identify providers who are less likely to have weight bias.
- Users could track their satisfaction with nutrition advice and their willingness to follow recommendations from their dietitian. Over time, they could monitor whether working with a bias-aware provider leads to better health outcomes and improved trust in their healthcare team.
This research describes weight bias among a small sample of dietitians in one Canadian province and should not be used to make judgments about individual healthcare providers. While the study identifies an important issue, it is preliminary and based on a low response rate. If you have concerns about bias from your healthcare provider, consider seeking a second opinion or finding a provider who specializes in weight-neutral or Health at Every Size approaches. This article is for informational purposes only and should not replace professional medical or nutritional advice from a qualified healthcare provider.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.