Food order and blood sugar: how to eat rice with less spike
Updated: 4 hours ago
The short answer
You can keep eating rice and still cut the blood sugar spike from a meal by about half. Eat the vegetables first, the protein with them or right after, and the rice last, with the same food and the same amount. The order changes how fast the sugar reaches your blood, not how much sugar is in the meal.
What we cover
Same meals, smaller spikes. In a Japanese study, 19 adults with type 2 diabetes wore a glucose sensor and ate the same meals with the vegetables first or the rice or bread first. The average spike after meals was 46 percent lower with the vegetables first, while the day's average blood sugar stayed about the same. Primary source
Your stomach sets the pace. In 12 people with type 2 diabetes, half the rice left the stomach in about 30 minutes when it was eaten first, and in about 83 minutes when fish came first. Eating fish or meat first also raised GLP-1, the hormone that drugs like Ozempic copy. Primary source
Mixed meals. In 16 adults with type 2 diabetes, the peak rise was about 75 mg/dL with bread and juice first, 58 mg/dL with everything eaten together, and 35 mg/dL with bread and juice last. Primary source
Prediabetes and the crash. In 15 adults with prediabetes, a salad first cut the blood sugar peak by a little over 40 percent. Eating the carbs first produced a rise at 1 hour and a drop to the lowest point at 3 hours. Primary source
No waiting required in one study. Young women without diabetes who ate a whole meal of vegetables, fish and white rice in 10 minutes still had lower blood sugar than when they ate the rice first. Primary source
What happens over 2 years. In a randomized trial of 101 adults with type 2 diabetes in Japan, a vegetables-first rule lowered A1C more than a traditional exchange-list meal plan, with A1C lower at 6 months and still lower at 2 years. That group also ate more green vegetables and less fruit, so the rule changed more than the order. In a 16-week prediabetes trial, A1C and weight changed about the same with or without food-order coaching. Primary source
Timestamps
0:00 Eat rice without the spike
0:44 The one small trick
1:31 Why the order changes the spike
2:53 The GLP-1 connection
3:48 What to eat first
4:42 Do you have to wait?
5:16 Curry, stir-fry and other mixed meals
6:41 The sugar crash
7:45 How it beat a diabetes meal plan
10:29 Two cautions: kidney disease and insulin
11:18 Speed, not amount
12:02 The one thing to do at your next meal
References
Imai S, Fukui M, Ozasa N, et al. Eating vegetables before carbohydrates improves postprandial glucose excursions. Diabet Med. 2013;30(3):370-372. https://doi.org/10.1111/dme.12073
Vegetables first reduced the peak rise after the same meal, while average daily glucose stayed about the same. Evidence type: randomized crossover study.
Imai S, Matsuda M, Hasegawa G, et al. A simple meal plan of 'eating vegetables before carbohydrate' was more effective for achieving glycemic control than an exchange-based meal plan in Japanese patients with type 2 diabetes. Asia Pac J Clin Nutr. 2011;20(2):161-168. https://pubmed.ncbi.nlm.nih.gov/21669583/
A vegetables-first meal plan lowered A1c more than an exchange-list plan over two years; other food choices also changed. Evidence type: randomized trial.
Kuwata H, Iwasaki M, Shimizu S, et al. Meal sequence and glucose excursion, gastric emptying and incretin secretion in type 2 diabetes. Diabetologia. 2016;59(3):453-461. https://doi.org/10.1007/s00125-015-3841-z
Eating fish or meat before rice delayed gastric emptying and raised GLP-1 in a small study. Evidence type: randomized crossover study.
Shukla AP, Andono J, Touhamy SH, et al. Carbohydrate-last meal pattern lowers postprandial glucose and insulin excursions in type 2 diabetes. BMJ Open Diabetes Res Care. 2017;5(1):e000440. https://doi.org/10.1136/bmjdrc-2017-000440
Carbohydrates last produced a smaller glucose peak than carbohydrates first or a mixed meal. Evidence type: randomized crossover study.
Imai S, Kajiyama S, Kitta K, et al. Eating vegetables first regardless of eating speed has a significant reducing effect on postprandial blood glucose and insulin in young healthy women. Nutrients. 2023;15(5):1174. https://doi.org/10.3390/nu15051174
Vegetables first lowered post-meal glucose even when healthy young women ate the whole meal within ten minutes. Evidence type: crossover study.
Shukla AP, Dickison M, Coughlin N, et al. The impact of food order on postprandial glycaemic excursions in prediabetes. Diabetes Obes Metab. 2019;21(2):377-381. https://doi.org/10.1111/dom.13503
A salad-first meal reduced the glucose peak in 15 adults with prediabetes. Evidence type: randomized crossover study.
Shukla AP, Karan A, Hootman KC, et al. A randomized controlled pilot study of the food order behavioral intervention in prediabetes. Nutrients. 2023;15(20):4452. https://doi.org/10.3390/nu15204452
Food-order coaching did not produce a clear extra A1c or weight benefit over 16 weeks. Evidence type: randomized pilot trial.
One study explained in plain language every week, with sources attached, plus the free metabolic health guide: https://guides.selfprinciple.org/metabolic
This content is for educational purposes only and is not medical advice. Always consult your healthcare provider for individual care. The views expressed are Dr. Sean Hashmi's own and do not represent his employer.
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