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300 + 140 = Healthy!

2023.08.21
Photo Credit: Angele J @ Pexels.com

Do you like to drink milk and eat other dairy products such as cheese or yoghurt? In the UK, where I lived for over 25 years, dairy products were a big part of my daily diet and they are still very popular. Less than 20% of the UK’s population is lactose intolerant, whereas in Japan it’s almost three quarters of the population. For these people, digesting dairy products can be very difficult and troublesome. Both lactose and alcohol intolerance are quite common in Asian countries, reflecting the history of agriculture and food production, and resulting in some small but significant genetic differences between various cultural populations. However, regarding what we eat, the belief that fresh fruit and vegetables are good for our health is widely shared by humans across the globe. 

Even widely-held beliefs can be inaccurate, so just over 20 years ago researchers from Yokohama City University and the National Cancer Center set out to conduct a 20-year-long collaborative study to scientifically verify this idea in relation to the Japanese population. Although past studies in the United States and Europe have shown that eating lots of fruit and vegetables leads to a longer, healthier life, it was the first time such a study had been conducted in Japan. The results have recently been published and they show that people who eat lots of fruits and vegetables are at a lower risk of death compared to those who rarely eat them. 

So how much should we eat each day? One of the recommendations that came out of this research is that people should ideally eat at least 300 grams of vegetables and 140 grams of fruit every day. This is because the study also shows that mortality does not decrease in proportion to the amount of fruit and vegetable intake. Just the right amount each day is enough to maintain a healthier body. With the ever-increasing prices of fresh produce, it may be an economic choice to buy cheaper, processed food, but can you put a price on your health? 

If you’re interested in the statistics of this study, read on. Approximately 95,000 people aged 40 to 69 living in Tokyo and 10 other prefectures nationwide took part in the study. During the 20-year period about 25% of the participants died. Vegetables: risk of death for those who ate lots of vegetables was seven to eight percent lower compared to those with the lowest vegetable consumption. Fruit: Compared to participants who ate the least amount of fruit, those with high fruit consumption had an eight to nine percent lower risk of death, particularly from cardiovascular diseases. Unfortunately, no connection between eating a lot of fruit and mortality from cancer and respiratory diseases was found.

{Link to Science Japan summary of study [https://sj.jst.go.jp/news/202211/n1101-01k.html]}

Questions:

Q1. What percent of Japan’s population is lactose intolerant? 
Q2. Which Japanese university was involved in the 20-year study? 
Q3. How many prefectures made up the population of participants in the studyå?

Scroll down ↓ for the answers















Answers:
A1. Almost 75% 
A2. Yokohama City University 
A3. 11. Tokyo + 10 more

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