People often claim that eating certain foods first, such as carbohydrates last, helps manage weight or blood sugar. Evidence suggests food order can indirectly affect weight loss and more directly affect blood glucose, but understanding its limits provides needed insight.
What is Meant by Carbohydrate?
First, carbohydrates (carbs) are often discussed as a distinct food category, which can be misleading. Lettuce, broccoli and other low-starch vegetables are generally not considered “carbs,” yet derive most of their calories from carbohydrate while providing little per serving. In contrast, beans and lentils are starch-rich, starch being chains of glucose molecules, while also providing substantial fiber and protein. Potatoes, corn and peas are also starch-rich. Grains are similarly starch-rich and may be refined into white bread, white rice and pasta. Fruits are carbohydrate-rich, primarily from sugars, while fruit juice removes most fiber, providing a more concentrated source of readily consumed carbohydrate.
Thus, carbohydrate concentration exists along a spectrum, with considerable differences in fiber, processing and food structure.
With this distinction in mind, research has examined whether eating low-starch vegetables and protein-rich foods before concentrated carbohydrate sources affects weight management and post-meal glucose.
Could Food Order Help with Weight Loss?
Although energy balance remains fundamental to weight loss, food sequence may affect satiation. Shukla et al. (2017) found greater secretion of GLP-1, an intestinal hormone that stimulates glucose-dependent insulin secretion, slows gastric emptying, and promotes satiation, when chicken and vegetables were eaten before bread and juice rather than after.
Rolls et al. (2004) similarly found that women served a large, low-energy-density salad before an unrestricted pasta meal consumed 12% fewer total calories than when no salad was served. In contrast, higher-energy-density salads increased total meal energy intake.
Together, these findings suggest food order can promote satiation and reduce energy intake, potentially supporting weight-loss efforts.
Food Order and Blood Glucose
To study the effect of food order on glucose control, Shukla et al. (2015) gave adults with type 2 diabetes the same 628-calorie meal on two occasions. It contained grilled chicken, lettuce and tomato salad, broccoli with butter, ciabatta bread and orange juice. When chicken and low-starch vegetables were eaten first, followed 15 minutes later by bread and juice, post-meal glucose was approximately 29% lower at 30 minutes, 37% lower at 60 minutes and 17% lower at 120 minutes than when bread and juice were eaten first. Insulin responses were also lower.
Shukla et al. (2017) expanded on this research by comparing three arrangements of a similar meal: bread and orange juice first, chicken and vegetables first, or all foods consumed together as a sandwich with orange juice. Eating chicken and vegetables first reduced total post-meal glucose exposure by 53% compared with bread and juice first and by 44% compared with consuming everything together.
The foods and calories remained the same, demonstrating that sequence alone can affect post-meal glucose, particularly for those with impaired glucose regulation.
Summary and Conclusion
Food order does not circumvent energy balance, and evidence that sequencing foods independently produces meaningful long-term weight loss remains limited. However, beginning meals with low-starch, low-energy-density vegetables and protein-rich foods may promote earlier satiation and reduce energy intake.
The evidence is clearer for blood glucose. Even when foods and calories remain the same, consuming low-starch vegetables and protein-rich foods before concentrated carbohydrate sources can substantially reduce post-meal glucose.
Food type, quantity, processing, fiber and order can all influence the body’s response to a meal. Registered dietitians can help translate these nuances into sustainable eating habits aligned with individual health and weight-management goals while supporting a healthy relationship with food.
About the Author
Patrick Traynor, PhD, MPH, RD, CSOWM, CPT, is a registered dietitian and founder of MNT Scientific, LLC (MNTScientific.com), an insurance-based nutrition practice serving South Lake Tahoe, CA; Minden, NV; and Ashland, OR. He holds the Interdisciplinary Specialist Certification in Obesity and Weight Management (CSOWM) from the Commission on Dietetic Registration. Virtual appointments are available via telehealth. For inquiries or appointments, visit MNTScientific.com, call (530) 429-7363, or email info@mntscientific.com.
References
Rolls, B. J., Roe, L. S., & Meengs, J. S. (2004). Salad and satiety: Energy density and portion size of a first-course salad affect energy intake at lunch. Journal of the American Dietetic Association, 104(10), 1570–1576. https://doi.org/10.1016/j.jada.2004.07.001
Shukla, A. P., Andono, J., Touhamy, S. H., Casper, A., Iliescu, R. G., Mauer, E., Zhu, Y. S., Ludwig, D. S., & Aronne, L. J. (2017). Carbohydrate-last meal pattern lowers postprandial glucose and insulin excursions in type 2 diabetes. BMJ Open Diabetes Research & Care, 5(1), e000440. https://doi.org/10.1136/bmjdrc-2017-000440
Shukla, A. P., Iliescu, R. G., Thomas, C. E., & Aronne, L. J. (2015). Food order has a significant impact on postprandial glucose and insulin levels. Diabetes Care, 38(7), e98–e99. https://doi.org/10.2337/dc15-0429
