What is the 'Method to Keep Working with the Best Brain' Taught by a Former Oxford Medical Researcher? A Book to Remove the 'Bad Habit' That Shortens Your Brain's Life! 'Toudoku-nou' Releases April 15
Diamond, Inc. will release 'Toudoku-nou' (Sugar-Poisoned Brain) by Dr. Kenju Shimomura on April 15, 2026. The book explains how excessive sugar intake destroys cognitive functions and offers practical diet and exercise advice to maintain brain health.
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The book 'Toudoku-nou' (Sugar-Poisoned Brain) by Kenju Shimomura, an active internal medicine physician and chief professor at Fukushima Medical University's School of Medicine who previously worked at the prestigious Oxford University in the UK, will be published by Diamond, Inc. on April 15.
'Toudoku-nou: What You Need to Know to Keep a Sharp Mind Forever' Written by Kenju Shimomura, Published by Diamond, Inc.
■ 'Let's take a break with something sweet...' This habit might be shortening your brain's life!?
Thorough elucidation of the 'mechanism by which sugar destroys cognitive function', which has been attracting attention in the medical community in recent years.
'I forget things more often for some reason.' 'I can't keep my concentration.' 'I feel my thinking has become dull.'
Have you felt such discomfort recently? It could be a dangerous sign that your 'brain life has started to shorten'.
In recent years, with medical advances, the average life expectancy of people has increased significantly, leading to what is called the 'era of 100-year life'. On the other hand, an extremely serious reality that cannot be overlooked is that the number of people developing 'dementia' is endless. According to a report by the Ministry of Health, Labour and Welfare, the number of dementia cases will reach 7 million in 2025, corresponding to 1 in 5 elderly people.
One of the unknown factors causing this 'collapse of cognitive function' is 'sugar'. The fact that consuming too much sugar breaks down the mechanism of insulin secretion in the body, increasing the risk of developing Alzheimer's disease and others, has been gaining attention in the medical world in recent years. For this reason, there is a movement to call Alzheimer's disease 'Type 3 Diabetes'. Moreover, while the effects can begin as early as in one's 20s for some people, they are difficult to notice in the early stages and are often missed in health checkups. On the other hand, sugar is also an important nutrient essential for life activities. Therefore, we must understand how to properly control it, rather than 'cutting out sugar'.
This book, 'Toudoku-nou', based on research results from around the world, scientifically unravels the relationship between sugar and the brain, and presents practical ways to interact with sugar without compromising health. The author, Dr. Kenju Shimomura, conducted research at Oxford University in the UK and is currently active as a physician. He is internationally recognized in the field of sugar and brain research, having contributed to the discovery of a treatment for neonatal diabetes. Dr. Shimomura carefully explains how to choose meals to protect the brain and exercise habits that can be incorporated into daily life in a way that can be understood without specialized knowledge. By reviewing daily life, he provides concrete guidelines for preventing cognitive decline and maintaining a 'sharp mind forever'.
For business professionals in their prime, dementia is by no means a problem of the distant future. Especially for those who have witnessed changes in people close to them, they must have felt anxious, wondering, 'Am I going to be okay?'. This book will surely be of help to those harboring such anxieties.
■ Table of Contents
Introduction - The Cruel Future that Visits '1 in 5' Japanese People
Chapter 1 - What is Actually 'Meaningless' for the Brain
Chapter 2 - What Does it Mean for the Brain to 'Break'?
Chapter 3 - Why is the Brain 'Poisoned' by Sugar?
Chapter 4 - 'Genes' that Increase the Risk of Dementia
Chapter 5 - 'Eating Methods' to Avoid Being Poisoned by Sugar
Chapter 6 - 'Exercise' to Avoid Being Poisoned by Sugar
Conclusion - Lives That Couldn't Be Saved, and Lives That Were Saved
■ 'Toudoku-nou: What You Need to Know to Keep a Sharp Mind Forever'
Author: Kenju Shimomura
Price: 1,650 yen (tax included)
Release Date: April 15, 2026
Publisher: Diamond, Inc.
Format: B6 variant size, 256 pages
URL: https://www.amazon.co.jp/dp/4478121753
■ Author Profile: Kenju Shimomura
Graduated from Fukushima Medical University. Vice-President of the university, Chief Professor of the Department of Patho-control Pharmacology, School of Medicine. A basic medical researcher who is also an active practicing physician. Academic Councilor of the Tohoku Branch of the Japan Diabetes Society. Board-certified physician of the Japanese Society of Internal Medicine. MD, PhD. Born in Maebashi City, Gunma Prefecture. In 2004, he attempted to secure a job at Oxford University in the UK from the university medical school where he was working in Japan, successfully realizing his tenacious job-hunting efforts. As an official researcher at Oxford University, he received guidance for 8 years from Professor Frances Ashcroft, a world-leading physiologist. During that time, he contributed to a world-class achievement: the discovery of a treatment for neonatal diabetes. A paper reporting effective cases of treating cranial nerve symptoms of DEND syndrome, the most severe form of neonatal diabetes, was selected as an Editorial paper by 'Neurology', the journal of the American Academy of Neurology. In recognition of his contributions, in 2006 and 2010 at Oxford
'Toudoku-nou: What You Need to Know to Keep a Sharp Mind Forever' Written by Kenju Shimomura, Published by Diamond, Inc.
■ 'Let's take a break with something sweet...' This habit might be shortening your brain's life!?
Thorough elucidation of the 'mechanism by which sugar destroys cognitive function', which has been attracting attention in the medical community in recent years.
'I forget things more often for some reason.' 'I can't keep my concentration.' 'I feel my thinking has become dull.'
Have you felt such discomfort recently? It could be a dangerous sign that your 'brain life has started to shorten'.
In recent years, with medical advances, the average life expectancy of people has increased significantly, leading to what is called the 'era of 100-year life'. On the other hand, an extremely serious reality that cannot be overlooked is that the number of people developing 'dementia' is endless. According to a report by the Ministry of Health, Labour and Welfare, the number of dementia cases will reach 7 million in 2025, corresponding to 1 in 5 elderly people.
One of the unknown factors causing this 'collapse of cognitive function' is 'sugar'. The fact that consuming too much sugar breaks down the mechanism of insulin secretion in the body, increasing the risk of developing Alzheimer's disease and others, has been gaining attention in the medical world in recent years. For this reason, there is a movement to call Alzheimer's disease 'Type 3 Diabetes'. Moreover, while the effects can begin as early as in one's 20s for some people, they are difficult to notice in the early stages and are often missed in health checkups. On the other hand, sugar is also an important nutrient essential for life activities. Therefore, we must understand how to properly control it, rather than 'cutting out sugar'.
This book, 'Toudoku-nou', based on research results from around the world, scientifically unravels the relationship between sugar and the brain, and presents practical ways to interact with sugar without compromising health. The author, Dr. Kenju Shimomura, conducted research at Oxford University in the UK and is currently active as a physician. He is internationally recognized in the field of sugar and brain research, having contributed to the discovery of a treatment for neonatal diabetes. Dr. Shimomura carefully explains how to choose meals to protect the brain and exercise habits that can be incorporated into daily life in a way that can be understood without specialized knowledge. By reviewing daily life, he provides concrete guidelines for preventing cognitive decline and maintaining a 'sharp mind forever'.
For business professionals in their prime, dementia is by no means a problem of the distant future. Especially for those who have witnessed changes in people close to them, they must have felt anxious, wondering, 'Am I going to be okay?'. This book will surely be of help to those harboring such anxieties.
■ Table of Contents
Introduction - The Cruel Future that Visits '1 in 5' Japanese People
Chapter 1 - What is Actually 'Meaningless' for the Brain
Chapter 2 - What Does it Mean for the Brain to 'Break'?
Chapter 3 - Why is the Brain 'Poisoned' by Sugar?
Chapter 4 - 'Genes' that Increase the Risk of Dementia
Chapter 5 - 'Eating Methods' to Avoid Being Poisoned by Sugar
Chapter 6 - 'Exercise' to Avoid Being Poisoned by Sugar
Conclusion - Lives That Couldn't Be Saved, and Lives That Were Saved
■ 'Toudoku-nou: What You Need to Know to Keep a Sharp Mind Forever'
Author: Kenju Shimomura
Price: 1,650 yen (tax included)
Release Date: April 15, 2026
Publisher: Diamond, Inc.
Format: B6 variant size, 256 pages
URL: https://www.amazon.co.jp/dp/4478121753
■ Author Profile: Kenju Shimomura
Graduated from Fukushima Medical University. Vice-President of the university, Chief Professor of the Department of Patho-control Pharmacology, School of Medicine. A basic medical researcher who is also an active practicing physician. Academic Councilor of the Tohoku Branch of the Japan Diabetes Society. Board-certified physician of the Japanese Society of Internal Medicine. MD, PhD. Born in Maebashi City, Gunma Prefecture. In 2004, he attempted to secure a job at Oxford University in the UK from the university medical school where he was working in Japan, successfully realizing his tenacious job-hunting efforts. As an official researcher at Oxford University, he received guidance for 8 years from Professor Frances Ashcroft, a world-leading physiologist. During that time, he contributed to a world-class achievement: the discovery of a treatment for neonatal diabetes. A paper reporting effective cases of treating cranial nerve symptoms of DEND syndrome, the most severe form of neonatal diabetes, was selected as an Editorial paper by 'Neurology', the journal of the American Academy of Neurology. In recognition of his contributions, in 2006 and 2010 at Oxford