We Can Now Reverse Stage 4 Cancer & These Foods Are Spreading It! Dr. William Li (Chronic Disease Expert)

May 19, 2025
Overview

Dr. William Li, a Harvard-trained physician and medical scientist, discusses how the body's natural health defense systems fight diseases like cancer, and how diet and lifestyle choices can either boost or compromise these defenses, offering actionable insights for longevity and well-being.

At a Glance
23 Insights
2h 7m Duration
22 Topics
8 Concepts

Deep Dive Analysis

Understanding the Body's Health Defense Systems

Key Diseases Linked to Diet and Societal Health Trends

How Cancer Forms and the Body's Natural Defenses

Foods and Habits That Compromise Health Defenses

Impact of Stress and Sleep on Immunity and Metabolism

The Alarming Rise of Early-Onset Cancers

Hidden Health Risks of Microplastics in Our Bodies

Reducing Microplastic Exposure and Tea's Health Benefits

Processed Meats and Their Link to Colorectal Cancer

Personal Cancer Journey and Immunotherapy Breakthroughs

Future of Cancer Treatment: AI and Personalized Vaccines

Gut Bacteria's Role in Immunotherapy Success

Evaluating Different Dietary Approaches for Health

Why Japan Excels in Health and Longevity

Understanding Body Fat Types: Visceral vs. Subcutaneous

The Dangers of Visceral Fat and Its Cancer Link

Coffee's Impact on Fat Metabolism and Brown Fat

Practical Approaches to Intermittent Fasting

Diet, Angiogenesis, and Brain Health (Alzheimer's/Dementia)

Food as Medicine: Reintegrating Ancient Wisdom with Science

The Role of Dietary Supplements in Health

Dr. Li's Top Five Health-Supporting Foods

Health Defense Systems

These are the body's hardwired mechanisms, including immunity, angiogenesis, DNA repair, stem cells, and the microbiome, that constantly work to protect us from diseases like cancer. They patrol the body, eliminate microscopic cancers, and maintain overall health.

Microscopic Cancers

Every 24 hours, about 10,000 mistakes are made in DNA replication within the body, leading to microscopic cancers. These are tiny abnormal cells that are usually detected and eliminated by the body's health defense systems before they can develop into clinical tumors.

Angiogenesis

This is the process by which the body grows and maintains its 60,000 miles of blood vessels, which deliver oxygen and nutrients to every organ and tissue. It's a critical health defense system that carefully controls blood vessel growth, preventing them from feeding cancers and ensuring proper circulation to healthy tissues.

Glymphatic System

Described as the brain's 'sewer system,' the glymphatic system is responsible for cleansing and detoxifying the brain. It is tightly shut during the day but opens up during deep REM sleep to drain accumulated toxins, which is essential for brain clarity and function.

Visceral Fat

This is a dangerous type of inflammatory fat that accumulates deep inside the body cavity, packed between organs. Unlike subcutaneous fat, excess visceral fat can compress organs and leak inflammatory substances throughout the body, significantly increasing the risk of chronic diseases and cancers.

Brown Fat

A metabolically active type of fat, distinct from white fat, that is rich in mitochondria and appears brown due to iron oxidation. When activated by cold temperatures or certain foods, brown fat undergoes thermogenesis, burning down harmful white fat (including visceral fat) to generate heat and improve metabolism.

Cancer Stem Cells

These are renewable cells found within tumors that enable cancers to return even after initial treatments. Research indicates that certain natural compounds found in foods can specifically target and kill these resilient cancer stem cells.

Abnormal Angiogenesis in Alzheimer's

In Alzheimer's disease, blood vessels in the brain grow abnormally; they don't provide good blood flow and instead secrete neurotoxins that kill brain cells. These abnormal vessels also secrete precursors that contribute to the buildup of amyloid plaques, linking angiogenesis directly to the disease's progression.

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What are the key diseases most correlated to the food we eat today?

The biggest health crises linked to diet include cardiovascular disease, diabetes and its metabolic consequences, cancer, dementia, and many inflammatory diseases that reduce quality of life.

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Why are cancer cases in young people increasing globally?

The rise in early-onset cancers is likely due to a combination of increased exposure to more toxic environmental harms and factors that compromise our body's natural health defenses, tipping the balance against us.

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What are the hidden health risks of microplastics in our diet?

Microplastics can embed themselves in the body, are associated with inflammation, and have been found in the brain, bloodstream, breast milk, testicles, and human semen. Studies show plastic embedded in carotid arteries increases the risk of fatal heart attack or stroke by fourfold.

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Which type of tea offers the best health benefits?

While green tea is universally healthy, research has shown that Earl Grey tea is particularly potent in supporting the body's angiogenesis defense system. Matcha, a shade-grown and ground green tea leaf, offers 100% polyphenols and dietary fiber, and has been found to kill breast cancer stem cells in the lab.

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What is the link between cured meats and cancer?

Processed meats like salami and bologna are considered carcinogens by the World Health Organization and are highly linked to an increased risk of bowel cancers, particularly colorectal cancer, due to the exposure of the gut to these carcinogens.

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What is the best food diet for long-term health?

Instead of strict, short-term trending diets, a sustainable approach like the Mediterranean style of eating is recommended. This approach is plant-forward, fresh, seasonal, uses healthy cooking oils, and is enjoyable and maintainable for life.

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Why is Japan considered one of the healthiest countries?

Japanese culture emphasizes modesty in eating, often following the 'hara hachi ban mi' principle of stopping when 80% full, which cuts down on caloric intake. They also have a very healthy plant-forward, fresh, and seasonal diet.

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How do I know if I'm overeating, especially if I appear slim?

You might be overeating if your body is accumulating too much visceral fat, even if you appear slim (known as 'skinny fat'). This indicates you're overloading your body's fuel tank with excess calories, which can lead to internal fat buildup.

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Why is visceral fat dangerous and linked to cancer?

Visceral fat grows between organs, pushing on them and, when it outgrows its blood supply, becomes hypoxic and highly inflammatory. This inflammation leaks throughout the body, creating an environment where cancer thrives, increasing the risk of 14 different cancers.

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Is fasting beneficial for fat loss and overall health?

Yes, fasting is beneficial and natural. During sleep, your metabolism shifts to burn fat. Extending this natural fasting period, such as by not eating after dinner and delaying breakfast, helps burn accumulated fat and supports overall metabolic health.

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Should we use food supplements?

Supplements can be helpful for 'topping off' micronutrients if you can't get everything from your food. The primary approach should be to obtain nutrients from a diverse diet, but supplements like Vitamin D, Omega-3s, and specific probiotics can be beneficial.

1. Boost Immune System for Cancer Defense

Strengthen your immune system through diet, exercise, and lifestyle to patrol your body and eliminate microscopic cancers, significantly lowering your overall cancer risk.

2. Manage Chronic Stress Effectively

While some stress can be beneficial, unabated chronic stress lowers your immune system, raises blood pressure, damages DNA, and compromises all health defenses, making you vulnerable to disease.

3. Prioritize Quality Sleep

Aim for 7-9 hours of quality sleep (8 hours is ideal) nightly, as deep sleep allows your brain to detoxify via the glymphatic system and your metabolism to burn fat, repairing and regenerating health defenses.

4. Reduce Microplastic Exposure

Minimize your ingestion of microplastics by replacing plastic cups, plates, and silverware with ceramic or glass, and choosing foods not packaged in plastic.

5. Adopt a Mediterranean/Asian Diet

Follow a sustainable, plant-forward, fresh, and seasonal eating style, like the Mediterranean or Asian diet, which emphasizes healthy cooking oils and diverse ingredients for lifetime health.

6. Practice Hara Hachi Bu

Adopt the Japanese mantra of ‘Hara Hachi Bu’ by stopping eating when you are 80% full, which helps avoid overeating and caloric overload that damages metabolism and accelerates cellular aging.

7. Extend Your Overnight Fast Naturally

Increase your daily fasting window by stopping eating 3 hours before bed and waiting at least an hour after waking before your first meal, naturally achieving 12+ hours of fasting to optimize fat burning.

8. Activate Brown Fat with Cold and Food

Stimulate your body’s brown fat, which burns harmful visceral fat, by sleeping in cooler rooms, taking cold baths, and consuming foods like coffee.

9. Limit Added Sugar and Ultra-Processed Foods

Reduce your intake of added sugar and ultra-processed foods to prevent sustained high blood glucose levels, which wear out your metabolism and lead to a cascade of health problems.

10. Avoid Excess Sodium

Limit excess salt, especially in restaurant foods, as high sodium levels accelerate cellular aging, cause wear and tear on circulation, and compromise blood vessel health defenses.

11. Moderate Alcohol Consumption

Recognize that alcohol is a universal toxin; while the body can recover from small amounts, regular and excessive drinking can devastate health defenses over time.

12. Reduce Processed Meat Intake

Avoid processed meats such as salami and bologna, as they are considered carcinogens and are strongly linked to an increased risk of bowel cancers with regular consumption.

13. Drink Matcha for Enhanced Health

Consume matcha, a shade-grown, ground green tea leaf powder, for its high concentration of polyphenols, dietary fiber, and lab-demonstrated ability to kill breast cancer stem cells.

14. Consume Pomegranate and Cranberries

Eat pomegranates (juice or seeds) and cranberries (juice or dried) to promote the growth of Acromantia mucinophila, a gut bacteria vital for improving the body’s response to cancer immunotherapy.

15. Eat Cooked Tomatoes for Prostate Health

Consume two to three half-cup servings of cooked tomatoes per week; their lycopene cuts off blood supply to tumors and is associated with a 29% lower risk of prostate cancer.

16. Incorporate Dark Chocolate and Beets

Eat dark chocolate, beets, and spinach to stimulate the production of nitric oxide, which widens blood vessels for improved blood flow (especially in the brain) and recruits healthy stem cells.

17. Consume Tree Nuts Regularly

Include tree nuts like walnuts, almonds, macadamias, and pistachios in your diet for their dietary fiber, healthy protein, beneficial fats, and ability to kill some cancer stem cells.

18. Eat Berries for Fiber and Polyphenols

Incorporate berries such as raspberries, blueberries, and strawberries into your diet for their high fiber content (raspberries are particularly rich) and polyphenols that reduce inflammation.

19. Prioritize Leafy Green Vegetables

Include leafy greens like bok choy, kale, chicory, and escarole in your diet, as they are fundamental components of healthy Mediterranean and Asian cuisines.

20. Choose Loose-Leaf Tea

Opt for loose-leaf tea, such as Earl Grey, over tea bags, as tea bags can shed billions of microplastic particles, and Earl Grey has shown potency in supporting blood vessel health.

21. Eat Purple Potatoes

Incorporate purple potatoes into your diet; lab studies at Penn State University have shown their anthocyanins can kill colon cancer stem cells, potentially preventing cancer recurrence.

22. Use Supplements Strategically

Use supplements like Vitamin D and Omega-3 fatty acids to ’top off’ micronutrient intake if you cannot obtain enough from your diet, but always prioritize whole foods.

23. Consider Lactobacillus Reuteri Probiotic

Take a chewable Lactobacillus Reuteri probiotic to lower inflammation, build immunity, promote social hormones, and kill bacteria that cause cavities and gum disease.

Every 24 hours there are 10,000 mistakes that are made in your body. Each of those is a microscopic cancer.

Dr. William Li

The reason that we don't become more sick from all kinds of diseases including cancer is because our body is hardwired with its own health defense systems.

Dr. William Li

The holy grail in the pharmaceutical industry is to find something that can kill cancer stem cells, and we don't have a drug that can do that. Turns out mother nature beat us to the punch.

Dr. William Li

Food has potency just like drugs.

Dr. William Li

Immunotherapy is a medicine that you give a cancer patient that wakes up your own immune system... and her own 80-year-old immune system woke up like a super like an army of super soldiers and went after that cancer.

Dr. William Li

If you have inflammation without even a microscopic cancer... putting inflammation in the environment of a cancer is like pouring gasoline on the embers of a fire.

Dr. William Li

You should love your food to love your health.

Dr. William Li

Lowering Exposure to Microplastics

Dr. William Li
  1. Throw out all plastic cups, plastic plates, and plastic silverware.
  2. Replace plastic items with ceramic or glass alternatives.
  3. When buying food, try to avoid products that are clearly packaged in plastic.

Optimizing Intermittent Fasting (Natural Method)

Dr. William Li
  1. Stop eating after dinner (e.g., 8 PM) and avoid any snacks before bed.
  2. Aim for 8 hours of quality sleep each night.
  3. Upon waking, wait at least one hour before eating breakfast.

Growing Acromantia Mucinophila Bacteria in the Gut

Dr. William Li
  1. Consume pomegranate (juice or seeds).
  2. Eat cranberries (juice or dried).
  3. Drink Concord grape juice or eat Concord grapes.
  4. Incorporate chili peppers into your diet.
  5. Use Chinese black vinegar.
10,000
Microscopic cancers formed in the body Number of DNA replication mistakes made every 24 hours that are not caught and fixed.
40 trillion
Cells in the human body Approximate number of cells in the human body.
1 billion
Cancer cells in a 1-centimeter breast cancer Smallest size of breast cancer detectable by touch, already containing this many cells.
100 million
Blood vessels feeding a 1-centimeter tumor Number of blood vessels coursing into a tumor of this size.
16,000 times
Growth of a microscopic tumor when touched by a single blood vessel Increase in size within just two weeks.
80%
Increase in early onset cancer incidents (1990-2019) Global rise in early onset cancer incidents.
Fourfold (400%)
Risk of fatal heart attack or stroke for men with plastic in carotid artery Increased risk observed in a study of men with microplastics embedded in their blood vessel lining over several years.
1 billion
Microplastic particles shed from a single tea bag Amount of microplastic particles that can be released from a single tea bag, as shown by research.
60,000 miles
Miles of blood vessels in a typical adult Total length of blood vessels in the human body.
400 miles
Miles of blood vessels in the brain Length of blood vessels specifically coursing through the human brain.
29%
Lower risk of prostate cancer for men eating cooked tomatoes Reduction in risk for men who regularly consume cooked tomatoes.
2-3 servings per week
Serving frequency for cooked tomatoes to lower prostate cancer risk Recommended frequency based on population studies.
Half a cup
Typical serving size for cooked tomatoes Standard serving size supported by studies.
14
Cancers linked to excess visceral fat Number of different cancers whose risk is increased by high levels of visceral fat.
3-4 cups
Recommended daily coffee intake to activate brown fat Dose of coffee that can activate brown fat to burn harmful fat.
More than 200
Number of healthy foods studied by Dr. Li Foods identified as beneficial for health defenses and disease prevention.