The Secrets of People Who Never Get Sick

1. Blue Zones: Emulate the Lifestyle of the Longest-Lived

Encoded in the world’s Blue Zones are centuries—even millennia—of human experiences.

Blue Zone Defined. Blue Zones are geographical regions where people live measurably longer and healthier lives. These areas, identified by Dan Buettner, include Sardinia (Italy), Okinawa (Japan), Loma Linda (California), Icaria (Greece), and Nicoya Peninsula (Costa Rica). The inhabitants of these zones share common lifestyle characteristics that contribute to their longevity.

Key Lifestyle Factors. These include:

• A plant-based diet rich in beans, vegetables, and fruits
• Regular physical activity integrated into daily life
• Strong social connections and a sense of community
• A sense of purpose or "reason to live" (ikigai)
• Stress reduction techniques

Applying Blue Zone Principles. While you may not be able to move to a Blue Zone, you can adopt their lifestyle habits. This involves prioritizing whole foods, staying active, nurturing relationships, finding purpose, and managing stress. Small changes in these areas can lead to significant improvements in health and longevity.

2. Brewer's Yeast: A Nutritional Powerhouse

Yeast contains almost no fat, starch, or sugar; its excellent protein sticks to your ribs, satisfies the appetite, increases your basal metabolism, and gives you pep to work off unwanted pounds.

Rich in B Vitamins. Brewer's yeast is a single-celled fungus packed with B vitamins, essential for metabolizing carbohydrates, fats, and proteins. These vitamins support healthy hair, skin, nerves, blood cells, hormone production, and immune function. B vitamins also help keep homocysteine levels low, reducing the risk of heart disease.

Protein and Trace Minerals. Brewer's yeast is a good source of protein, offering about 8 grams per two-ounce serving. It also contains trace minerals like selenium, copper, iron, zinc, potassium, magnesium, and chromium, all vital for maintaining optimal health.

Incorporating into Your Diet. Brewer's yeast can be added to various foods, such as cereals, soups, sauces, and baked goods. Nutritional yeast, a less bitter alternative, can be used as a condiment. While brewer's yeast offers numerous benefits, it's important to start with small amounts to avoid digestive discomfort.

3. Caloric Reduction: Eat Less, Live Longer

I get a standing ovation just standing.

The Science of Caloric Restriction. Caloric reduction, or eating fewer calories than usual, has been linked to increased longevity and improved health in various animal studies. Research suggests that it may reduce the incidence of age-related disorders, such as cardiovascular disease and diabetes.

Practical Implementation. While extreme caloric restriction can be challenging, aiming for a 20-30% reduction in calorie intake while maintaining nutrient density can be beneficial. This involves focusing on nutrient-rich foods and avoiding simple sugars and processed foods.

Tips for Caloric Reduction:

• Eat more vegetables and lean protein
• Limit simple sugars and refined flours
• Practice portion control
• Eat larger lunches and smaller dinners

4. Chicken Soup: More Than Just a Comfort Food

It is dark golden in color, intensely flavorful, and, in short, an elixir of the gods.

Ancient Remedy. Chicken soup has been used for centuries as a remedy for colds and other ailments. It was prescribed for colds in ancient Egypt, and continued to be considered a powerful remedy from antiquity through the Middle Ages.

Scientific Basis. Research suggests that chicken soup has anti-inflammatory effects, slowing the growth of white blood cells that stimulate mucus production. Certain spices, such as curry, pepper, and garlic, can help ease a cough by thinning mucus.

Nutritional Benefits. Chicken soup often contains vegetables like onions, carrots, turnips, celery, and parsley, which are rich in vitamins, minerals, and antioxidants. The steam from the soup can also help open up congested noses and chests.

5. Cold Showers: Invigorate Your Body and Mind

The enjoyment comes after the shower is over.

Ancient Practice. Cold showers have been used for centuries in various cultures for their purported health benefits. Hydrotherapy, or using water to treat disease, was common in ancient civilizations.

Reported Benefits. Proponents claim that cold showers improve circulation, strengthen the skin, bolster the immune system, better your mood, and invigorate the body. Some studies suggest that cold water exposure may increase white blood cell count and levels of the antioxidant glutathione.

How to Take a Cold Shower. Start with a short burst of cold water and gradually increase the duration. Focus on breathing deeply and staying relaxed. Avoid jumping in all at once, and consult a doctor if you have any medical conditions.

6. Detoxification: Reduce Your Toxic Load

The fattier, more processed, and more adulterated our diet, the greater amount of it is retained in our bodies.

The Body's Natural Detox System. The body has natural detoxification processes, primarily carried out by the liver and kidneys. These organs filter and eliminate toxins from the bloodstream.

Supporting Detoxification. You can support your body's natural detoxification processes by:

• Eating a diet rich in whole, unprocessed foods
• Limiting exposure to environmental toxins
• Staying hydrated
• Exercising regularly

Detox Diets and Fasts. Some people choose to follow detox diets or fasts to further support detoxification. These often involve limiting consumption to juices or specific foods. However, it's important to approach these practices with caution and consult a healthcare professional.

7. Eating Dirt: Embrace the Hygiene Hypothesis

I think exposing myself to a little bit of ‘sick’ allows my body to create its own defenses against passing germs, dirt, viruses, or whatever.

The Hygiene Hypothesis. This theory suggests that reduced exposure to microorganisms in early childhood may increase the risk of allergic and autoimmune diseases. The idea is that our immune system needs exposure to a variety of microbes to develop properly.

Balancing Cleanliness and Exposure. While cleanliness is important, excessive sterilization may not be beneficial. Allowing children to play outdoors and come into contact with nature can help strengthen their immune systems.

Practical Considerations. It's important to note that eating dirt is not recommended, as modern soil can contain harmful substances. Instead, focus on a balanced approach to hygiene that allows for some exposure to beneficial microbes.

8. Friends: The Social Secret to Health

Having people rely on you is important.

Social Support and Health. Strong social connections have been linked to numerous health benefits, including reduced stress, improved immune function, and increased longevity. Social networks provide a sense of support and belonging, which is especially important for older adults.

Building and Maintaining Friendships. Making an effort to connect with others, whether through volunteering, joining a club, or simply reaching out to old friends, can have a positive impact on your health.

The Contagious Nature of Health. Studies have shown that health behaviors, such as obesity and smoking, can spread through social networks. Surrounding yourself with healthy, supportive people can encourage you to adopt healthier habits.

9. Garlic: The Stinking Rose with Healing Powers

Yeast contains almost no fat, starch, or sugar; its excellent protein sticks to your ribs, satisfies the appetite, increases your basal metabolism, and gives you pep to work off unwanted pounds.

Ancient Remedy. Garlic has been used for medicinal purposes for thousands of years. Ancient civilizations used it to treat a variety of ailments, from fevers to inflammation.

Cardiovascular Benefits. Research suggests that garlic can help lower blood pressure, reduce cholesterol levels, and prevent the formation of atherosclerotic plaque. It also acts as a powerful antioxidant and antibiotic.

Incorporating Garlic into Your Diet. Garlic can be eaten raw or cooked. It can be added to soups, sauces, and other dishes. Garlic supplements are also available, but fresh garlic may be more potent.

10. Germ Avoidance: Prudent Hygiene, Not Obsession

The bad stuff you’re going to pick up is from a person.

Germ Theory. Germ theory states that many diseases are caused by microorganisms. This understanding has led to the development of numerous public health practices, such as vaccination and hand washing.

Practical Strategies. To avoid germs, it's important to wash your hands frequently, especially after being in public places. Avoid touching your face, and try to maintain a safe distance from people who are sick.

Balancing Hygiene and Immunity. While it's important to avoid harmful germs, excessive sterilization can weaken the immune system. A balanced approach to hygiene is key.

11. Good Genes: Nature vs. Nurture

I get a standing ovation just standing.

The Role of Genetics. Genes play a significant role in determining our health and longevity. Certain genetic mutations can increase the risk of developing certain diseases.

Epigenetics. Epigenetics is the study of how environmental factors, such as diet and stress, can influence gene expression. This suggests that we can modify our genetic predispositions through lifestyle choices.

Taking Control of Your Health. While you can't change your genes, you can take steps to mitigate the risks they pose. This involves adopting a healthy lifestyle, including a balanced diet, regular exercise, and stress management techniques.

12. Positive Attitude: The Power of Belief

You have five more days left at this event. You are not going to become sick.

The Mind-Body Connection. The mind-body connection refers to the interaction between our thoughts, emotions, and physical health. Research suggests that positive attitudes and beliefs can have a beneficial impact on our well-being.

The Placebo Effect. The placebo effect is a phenomenon in which a person experiences a positive outcome from a treatment that has no inherent therapeutic value. This highlights the power of belief in healing.

Cultivating a Positive Attitude. You can cultivate a positive attitude by:

• Practicing gratitude
• Engaging in positive self-talk
• Surrounding yourself with supportive people
• Finding meaning and purpose in life

Last updated: April 6, 2025