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4 Do’s and Don’ts When Eating in Japan

Sue standing in Nishiki Market, Kyoto JapanI had a wonderful trip to Japan, travelling through Tokyo, Kyoto, Osaka and Kobe! Of course as a dietitian, I spent most of my time on the food scene. When it comes to food and eating, here are 4 do’s and don’ts I discovered on my trip.

DO explore the local food markets

Each of the big cities have busy food markets with many signature local delights. At the Nishiki Market in Kyoto, I tried premium matcha ice cream (delicious!) and Takoyaki (deep fried octopus balls – overrated, in my opinion). And in Tokyo’s Tsukiji Market, I lined up for tamagoyaki (Japanese omelet on a stick – totally worth the wait!) and strawberry daifuku (a pretty dessert made of mochi but a little too sweet for me).

DON’T eat on the go

Eating while walking is a big no-no. At the food markets, signs are actually posted asking patrons to eat their food inside or just outside of the store. Eating on local trains is also discouraged. However, eating and drinking are allowed on long distance Shinkansen bullet trains. I also noticed no public garbage cans on the streets, in hotel lobbys or even in the train stations. The unspoken rule is to simply carry all of your trash with you. All of these efforts help to keep the city super clean.

A sign posted outside the market.

 

 

 

 

 

DON’T expect too many fruits or veggies

I researched quite a bit for my trip to Japan, but honestly, nobody mentioned the lack of fruits and veggies at meals. My typical fare consisted of sushi, ramen, udon noodles and sukiyaki – lots of delicious starch with fish or meat – but veggies were notably absent. A couple of times, I treated myself to a seven course chef’s choice meal (“omakase”) and was delighted to finally see some veggies, albeit half an asparagus spear or a single baby corn as a garnish.

Sue holding a small spear of asparagus with a plate of grilled scallops

 

 

 

 

 

DO visit the convenience stores

On practically every corner of the city, there’s at least one convenience store. Whether it’s a Family Mart, Lawson’s or 7-11, these stores carry a variety of healthy, affordable options – including sliced fruit in pouches and mini broccoli edamame salads. I fell in love with the ham and lettuce sandwiches (emphasis on the lettuce!) and the red bean buns which were perfect snacks. There was also Greek yogurt and high protein milk to help me reach my daily calcium goals.

Are you planning a trip to Japan soon? Let me know in the comments and I’d be thrilled to suggest some fun food workshops and delicious restaurant options!

 

Ask a Dietitian: Can Kiwis Help with Constipation?

Headshot of Sue and a bowl of kiwis in the backgroundYes! You’ve heard of the saying, “An apple a day keeps the doctor away!” But, if you experience constipation, the advice can be changed to “Two kiwis a day keeps the doctor away!”

The research study

Research published in the American Journal of Gastroenterology studied two groups of adults with either functional constipation or IBS-C (Irritable Bowel Syndrome – constipation predominant). The adults were randomly assigned to eat 2 green kiwis every day or 7.5 grams of psyllium powder every day for 4 weeks. Psyllium is a type of soluble fibre known to help alleviate constipation as well as reduce blood cholesterol levels. The amount of fibre from the kiwis and psyllium was the same – 6 grams.

After this 4 week period, both groups returned to their usual diets for 4 weeks. Then, the groups switched around and ate the other test food – in other words, the group that started off eating kiwis now ate psyllium every day for 4 weeks, and vice versa.

The results

Both kiwis and psyllium improved constipation. When eating kiwis, the participants experienced an increase of over 1.5 “complete spontaneous bowel movements” (CSBM) per week. As a reference, an increase of 1 or more CSBM per week is considered clinically relevant for improving constipation. Furthermore, kiwi eating participants reported less bloating and straining after eating kiwis when compared to psyllium.

How do kiwis work?

There are a couple of reasons why kiwis have this beneficial effect. For starters, the fibre in kiwis has a higher swelling and water holding capacity than other fruits. In fact, the swelling ability of kiwi fibre is more than 6 times higher than apple fibre! Since kiwis can help retain more water in the small intestines, this helps to increase bulk and soften the stools as well as increase stool frequency.

In addition, kiwis contain a special enzyme called actinidin which seems to speed up the digestion of proteins and keeps things moving in the gut for more regular bowel movements.

The bottom line

Kiwis (green or gold) can be a helpful food to help ease constipation. If your constipation is persistent, please contact a registered dietitian for specialized advice.

 

References:

Eltorki M, Leong R & Ratcliffe EM, 2022. Kiwifruit and kiwifruit extracts for treatment of constipation: a systematic review and meta-analysis. Can J Gastroenterology & Hepatology 2022, Oct 6:2022:7596920; doi: 10.1155/2022/7596920.

Gearry R, Fukudo  Shin, Giovanni B et al., 2023. Consumption of 2 green kiwifruits daily improves constipation and abdominal comfort—results of an international multicenter randomized controlled trial. The American Journal of Gastroenterology 118(6):p 105. doi: 10.14309/ajg.0000000000002124.

Wilkinson-Smith V, Dellschaft N, Ansell J et al., 2019. Mechanisms underlying effects of kiwifruit on intestinal function shown by MRI in healthy volunteers. Alimentary Pharmacology & Therapeutics, 2019 Jan 31;49(6):759-768. doi: 10.1111/apt.15127