This article is for health education purposes only and is intended for informational reference; it does not constitute medical advice. If you have any health concerns, please consult a professional doctor.

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Mid-Autumn Festival hasn't arrived yet, but the mooncakes are already here: one box on the coffee table, one box from the company, and another box brought back from visiting relatives. A single small mooncake can pack as many calories as two bowls of rice—but if you really don't take a single bite, the holiday feels like too much of a loss.

First, let's look at the numbers. A review of studies across multiple holiday seasons found that from the year-end holidays through New Year, adults gain an average of 0.4 to 0.9 kilograms, and this weight often never comes off for the rest of the year[1]. Although Mid-Autumn Festival lasts only a few days, the principle is the same—the problem isn't any single mooncake, but "having them every day, eating them casually, and sitting down right after."

So can you still eat mooncakes? Yes. Remember four things:

First, cut them into small pieces and eat only a quarter at a time. This isn't a matter of willpower; it's a physiological response: in experiments, when the same meal was served, those given the largest portion ate about 30% more energy than those given a small portion, and they barely noticed[2]. Put a whole mooncake in front of you, and most people will finish it; cut it into small pieces, put it back in the box, and move it far from the sofa, and intake naturally goes down.

Second, drink water or weak tea first, then eat the mooncake. A randomized study of middle-aged and older adults found that drinking 500 milliliters of water before each of the three meals, along with the same low-calorie diet, led to about 2 kilograms more weight loss on average after 12 weeks compared with the group that didn't drink water[5]. Don't pair sweet drinks with mooncakes—sugary beverages are themselves extra calories; replacing them with plain water or unsweetened tea saves real intake.

Third, chew slowly and make each meal last at least 20 minutes. An analysis pooling 23 studies showed that fast eaters had about 2.15 times the odds of obesity compared with slow eaters, and their BMI was on average about 1.78 higher[4]. It takes about 20 minutes for the brain to receive the "full" signal; if you eat fast, you've often already overeaten by the time the signal arrives. Mooncakes are dense in oil and sugar, making them even more suited to small bites and slow savoring.

Fourth, don't sit down right after eating—walk for 15 minutes. A crossover trial in older adults found that walking 15 minutes after each of the three meals controlled post-meal blood sugar better than a single 45-minute walk, especially the segment after dinner[3]; a systematic review also confirmed that breaking up prolonged sitting and brief bouts of standing and activity can reduce post-meal blood sugar fluctuations[6]. Taking a walk downstairs while the family admires the moon is just right.

One-sentence action advice: This Mid-Autumn Festival, choose small portions of mooncake, cut them into quarters, pair them with plain water rather than sweet drinks, eat slowly, and walk for 15 minutes after meals—enjoy the holiday, and keep the weight numbers from looking bad.

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Disclaimer: This article is for health education purposes only and is intended for informational reference; it does not constitute medical advice. If you have any health concerns, please consult a professional doctor. People who need to control their diet, such as those with diabetes or high blood lipids, should follow their doctor's advice regarding holiday meal arrangements.

Conflict of interest statement: The content of this article is based on publicly published medical literature, and the author has no relevant conflicts of interest.

References

  1. Effect of the Holiday Season on Weight Gain: A Narrative Review. J Obes. 2017;2017:2085136. PMID:28744374
  2. Portion size of food affects energy intake in normal-weight and overweight men and women. Am J Clin Nutr. 2002;76(6):1207-1213. PMID:12450884
  3. Three 15-min bouts of moderate postmeal walking significantly improves 24-h glycemic control in older people at risk for impaired glucose tolerance. Diabetes Care. 2013;36(10):3262-3268. PMID:23761134
  4. Association between eating rate and obesity: a systematic review and meta-analysis. Int J Obes (Lond). 2015;39(11):1589-1596. PMID:26100137
  5. Water consumption increases weight loss during a hypocaloric diet intervention in middle-aged and older adults. Obesity (Silver Spring). 2010;18(2):300-307. PMID:19661958
  6. The Acute Effects of Interrupting Prolonged Sitting Time in Adults with Standing and Light-Intensity Walking on Biomarkers of Cardiometabolic Health in Adults: A Systematic Review and Meta-analysis. Sports Med. 2022;52(8):1765-1787. PMID:35147898

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