Prologue │ A Health Revolution Leading to Disease Freedom and Prevention
What is Functional Medicine? Healthy cells are essential for normal bodily functions.

Chapter 1: How to Reset Your Cells: Complete Cellular Health with Nutrition
Is Vitamin Intake the Answer? - Supplements
Why You Need a Personalized Vitamin Supplement - SNPs
5 Essential Supplements for Modern People - Basic Supplements
What Vitamin Do Cells Need Most? - Vitamin C
How much and how much should I take - Vitamin D
Consume the Right Supplements to Prevent Osteoporosis - Vitamin K2
From thyroid hormone production to bacterial growth inhibition - Iodine
Managing Cellular Health with Phytochemicals - Berberine
All About Detoxification - Detox

Chapter 2 The Real Reason You're Not Getting Well: Drug Therapy and the Limitations of Modern Medicine
A cancer diagnosis isn't a death sentence - cancer cells
The main culprit behind South Korea's declining birth rate: environmental hormones.
How to Escape Infertility - Improve Your Habits
Pain: The Body's Danger Signal
What is the natural healing power of humans? - Drug treatment
Is Medication Really Necessary? - Hypertension
Cholesterol is not a risk factor for atherosclerosis! - Hyperlipidemia
Exposure to POPs is More Dangerous Than Obesity - Diabetes
Modern people who eat too much and get sick - Energy metabolism
Daily Exercise vs. Every Other Day Exercise: Which Is Better? - Oxidative Stress
The most reliable insurance for old age - muscles
The Real Reason You're Groaning - Immunity
Four Years Lost to COVID-19 - Vaccination
How to Improve Autonomic Nervous System Function - Nervous System
Don't be fooled by pesticide-free labels! - Food Ingredients

Chapter 3: All Disease Begins in the Gut: How to Maintain Gut Health to Save Your Body
Oil pulling is the start - oral hygiene
Why Food Becomes Poison, Not Nutrients - Digestive Enzymes
Digestion doesn't start in the stomach! - Oral
Helicobacter pylori: What to do - Stomach
A healthy gut keeps the brain alive - the gut-brain axis
What Your Second Brain Does in Your Body - The Enteric Nervous System
3 Solutions to Correct Gut Bacterial Imbalances - Prevention
Traditional Korean Foods Good for Gut Health - Gut Microbiome
How to Normalize the Gut-Brain Axis - Management

Chapter 4: Restoring a Damaged Immune System: Disease-Specific Management Guided by Functional Medicine
Attacked hair follicles and pigment cells - alopecia areata and vitiligo
Attacking Yourself with Immune Disruption - Oral Lichen Planus
When Skin Cells Are Attacked - Psoriasis
Integrative treatment that removes the cause - atopy
Immunity and the Environment: Managing Them Together - Behçet's Disease
Ulcerative colitis, an autoimmune disease affecting the digestive system

Chapter 5: How to Be Healthier Every Day: Health Tips Emphasized by Functional Medicine
Misconceptions and Truths About Salt
What really causes food allergies?
You must know everything before eating it.
What if all pollutants ended up in the ocean?
How to improve digestion
How to kill cancer cells

supplement
About single nucleotide polymorphisms
What are vitamin metabolism gene mutations, SNPs?

A functional medicine revolution that focuses on prevention rather than treatment and correcting the cause rather than the symptoms.
“For the body to function normally, cells must be healthy!”

Why do we need to detoxify our bodies, why do we need to take supplements, why do we need to control our diet?
You can find the answer to how to take care of your health in this book.

_ Ji Young-mi (Vice President of the Korean Society of Oncology)

The core content of 'Doctor Duck', Korea's leading functional medicine channel and chosen by 200,000 subscribers, has finally been published as a book.
Author Kim Deok-su, a physician with 24 years of experience and a functional medicine specialist with 15 years of experience, has achieved 20 million cumulative views by explaining the essential knowledge of functional medicine that people need to know for a healthy life in an easy-to-understand manner at a level that is accessible to the general public.
Why is his content so beloved? It's because he exposes the flaws in modern medicine that no one has addressed, and draws on countless clinical experiences and research cases to guide patients on how to recover their health without medication.
He delves into the root of why modern medicine focuses on alleviating symptoms rather than eliminating the cause of disease, and emphasizes 'cellular reset', which can correct inflammation and imbalance in the body without going to the hospital.

What is a "cellular reset"? All diseases are linked to the health of individual cells.
When cells are healthy, tissues are healthy, and when tissues are healthy, the body's functions in each organ are normalized.
This is why Dr. Duck emphasized ‘cell reset.’
First, our body must be supplied with sufficient essential nutrients.
The book devotes a chapter to discussing supplementation, highlighting the importance of various vitamins and minerals to cellular health.
In particular, it goes beyond vitamin intake according to the recommended amount and provides an understanding of personalized vitamin intake, as well as the mechanisms of action and efficacy of major vitamins in the body, and shows that cellular health can be completed with nutritional supplements.

This book consists of five chapters.
Chapter 1 guides you through the essential nutrients for cellular health, and Chapter 2 examines why, despite the remarkable advances in modern medicine, people are still unable to escape disease.
Chapter 3 explains the relationship between the intestines and the brain and introduces methods for maintaining intestinal health to save your body.
Chapter 4 explains how functional medicine treats various diseases caused by immune system abnormalities.
Chapter 5 clearly summarizes the points to keep in mind when managing your health, as emphasized by functional medicine.


What's the real reason you're so noisy?
Energy overload, nutritional deficiencies, environmental hormones, a damaged immune system, poor eating habits…
Functional medicine preventative solutions you must know before you become ill.

Why am I always tired? Why don't I get better even after going to the hospital? Why do some people get better after taking cold medicine for just three days, while others don't even after a week? If blood pressure and diabetes medications are cures, why do we have to take them for the rest of our lives? Can't we ever be free from chronic fatigue, chronic disease, and accelerated aging? These are questions we've all pondered at least once.


Although human lifespan has increased significantly, with many now living beyond 100 years, our surrounding environment does not support a healthy life until 100.
Modern people live in an environment where they cannot help but become ill due to environmental pollution, destruction of the ecosystem, food contamination, heavy metal poisoning, and increased oxidative stress.
It's not uncommon to get lost in the deluge of health information.


This book examines the characteristics of each disease, from small things like colds and pain to large things like cancer, high blood pressure, hyperlipidemia, and atopy, and emphasizes why functional medicine-based body management is necessary.
Functional medicine is a medical practice that helps people maintain their own barn before they lock the barn door after the horse has bolted.
Therefore, the goal is to inform people that boosting immunity is the key to maintaining good health, that it is not natural to get sick as you age, and that diseases are not meant to be cured, but prevented.

Above all, it emphasizes accurate knowledge of the disease's pathogenesis and diagnostic criteria, and questions the medical common sense we have known so far.
It argues why the diagnostic criteria for high blood pressure are lowering every year, why sodium intake must be unconditionally restricted, and why obesity is a definite cause of diabetes.
Furthermore, he did not spare harsh criticism of the laziness of patients who conveniently rely only on medication.
The human body has the ability to heal itself, and it is said that we can all regain our health through a 'cellular reset'.

For modern people who are interested in health but are not healthy
How to Live Healthy to 100 with Cell Reset

As we move through COVID-19, our perspectives on health and disease have changed significantly.
As public awareness of immunity and vitamins increases, people are exercising hard, eating healthy, and taking supplements regularly to maintain overall health.
Still, my health doesn't seem to improve.
What could be the reason? Is it because of aging? Can't we live in peak condition, regardless of our age? The five reset points highlighted in this book will guide you to a healthier life.


◆ Disease Reset│Normalize your body's functions.

If you have a disease, liberation from it is a priority.
First, you need to check your lifestyle, surroundings, and eating habits.
The goal is to examine what factors triggered the onset of the disease and improve them to normalize the body's functions.
Here, we provide detailed guidance on everything from personalized nutritional supplement intake to disease management, and if necessary, we recommend consulting with a functional medicine specialist.

◆ Immune Reset│We need to restore our damaged immune system.
Could vitamins be the answer to boosting immunity? While everyone knows that vitamins C and D help boost immunity, we don't know exactly what their effects are on the body, nor do we know that dosages vary from person to person. Is it enough to just consume the recommended daily amount suggested by the WHO? We need to understand genetic mutations involved in vitamin metabolism.
You can restore your immune system by taking the right amount of vitamins you are lacking.

◆ Intestinal Reset│If you want to save your body, start with intestinal health.
There is no disease that takes as long and is as difficult to treat as the symptoms of the intestines.
Therefore, the importance of gut health cannot be overemphasized.
First, we need to understand the relationship between the gut and the brain.
We discuss diseases according to the distribution of intestinal microorganisms, the function of the enteric nervous system, and how the intestines affect the development of certain diseases.
This book contains everything you need to know about gut health, from oral hygiene to Helicobacter pylori eradication treatment.


◆ Habit Reset│Avoid things that are toxic to your body as much as possible.
“There is no disease incurable in this world, only habits that cannot be cured.” You need to reflect on your own habits.
It is no exaggeration to say that, as exposure to environmental hormones, heavy metals, and POPs has increased compared to the past, forming habits to reduce them is also a key part of health management.
From detox guides to exercise methods, you can find everything in this book.


◆ Diet Reset│Ultimately, food must change.
From why we need to be especially careful about consuming seafood, to why nurungji soup is bad for your health, to why we need to be careful with peanuts if we have low stomach acid, to guidance on the FODMAP diet and food antigen testing, we examine our bad eating habits and kindly guide you on how to consume nutrients that are not provided by food from a functional medicine perspective.


Dr. Duck has prioritized providing accurate medical information based on 15 years of clinical, research, and treatment data.
That work will continue 'until the day when all citizens are healthy', and this book is the first step.
If you keep them close and practice them one by one, it will be of great benefit to your health.
I recommend this book to readers who want to live healthily and without illness until they are 100 years old.