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How To Optimize Your Immune System & Fight Viruses with Dr Roger Seheult #206

Oct 5, 2021 2h 4m 17 insights
This week’s episode is all about the immune system and my guest is Dr Roger Seheult. He is a California based medical doctor, who practises as a critical care doctor also specialising in pulmonology and sleep.    Although you might expect an intensive care doctor to be concerned only with emergency medicine and quick fixes, Dr Seheult is really passionate about prevention. And when it comes to understanding inflammation and immunity, I can’t think of a better person to explain the science. Whether you’re worried about coronavirus, you want to avoid other winter bugs, or your goal is fending off chronic disease, I think you will find this conversation really useful.   We begin by discussing the link between inflammation and immunity. We speak in depth about the link between low vitamin D levels and coronavirus, how it might be used as both preventive and treatment, and exactly how much we should all be taking. Vitamin D is produced on exposure to sunlight, which leads us to talk about the importance of light – and dark – at the right times, for our circadian rhythms. This of course impacts on sleep and what Roger has to say about its vital role in immunity might just persuade any night owls out there to turn in early tonight.   From hot and cold therapies to nutritional supplements, food to forest bathing, stress-relief to spirituality, there’s so much useful stuff here. I hope you enjoy this conversation and can use it as a toolkit for feeling your best as we head into the colder months. Show notes available at https://drchatterjee.com/206 Support the podcast and enjoy Ad-Free episodes. Try FREE for 7 days on Apple Podcasts https://apple.co/3oAKmxi. For other podcast platforms go to https://fblm.supercast.com. Follow me on https://www.instagram.com/drchatterjee Follow me on https://www.facebook.com/DrChatterjee Follow me on https://twitter.com/drchatterjeeuk
Actionable Insights

1. Embrace Swiss Cheese Health Model

Adopt a multi-layered approach to health, understanding that combining various protective measures (like diet, sleep, and supplements) offers more robust defense than relying on a single intervention. This strategy ensures comprehensive well-being and resilience against illness.

2. Prioritize Early, Sufficient Sleep

Aim to go to bed early and get at least seven hours of sleep to support your immune system, as slow-wave sleep (predominant early in the night) is crucial for growth hormone secretion and physical/mental restoration. Insufficient sleep can weaken antibody responses and overall immune function.

3. Optimize Vitamin D Levels

Supplement with Vitamin D, especially if you live above the 35th parallel, spend time indoors, are older, or have darker skin, as optimal levels (potentially 50-60 ng/mL) are critical for modulating the immune system and reducing infection risk. Consider getting your levels tested to guide appropriate dosing, up to 4,000 IU daily.

4. Avoid Processed Foods

Eliminate processed foods from your diet, regardless of their meat content, as they are generally detrimental to health and can drive inflammation, which is linked to various chronic diseases and can exacerbate immune responses. Focus on minimally processed options for overall well-being.

5. Engage in Regular Exercise

Incorporate regular physical activity into your routine to strengthen your immune system and reduce the incidence of severe illness. Exercise is a fundamental component of a healthy lifestyle that contributes to overall resilience.

6. Connect with Nature Weekly

Spend time in nature, such as taking a long hike in a forest once a week, to boost your innate immune system through exposure to natural aromatic compounds (phytocytes) and significantly lower stress levels. The benefits of these exposures can last for about seven days.

7. Dedicate a Weekly Rest Day

Set aside one day each week to completely switch off from work, social media, and daily demands, allowing for mental and physical rest and self-reflection. This practice helps reset the body and mind, combating the constant inundation of modern life.

8. Foster Social Connection

Actively build and maintain strong social connections and a sense of belonging within a community or belief structure. Studies show that individuals with robust social support systems tend to experience better health outcomes and greater resilience against stress.

9. Expose Eyes to Morning Light

Get bright natural light exposure first thing in the morning by going outside for at least 20 minutes, perhaps while enjoying a hot drink. This practice helps to advance your circadian rhythm, making it easier to feel sleepy earlier in the evening.

10. Reduce Evening Light Exposure

Dim lights and avoid bright screens (laptops, TVs, phones) late in the evening, ideally turning them off completely, to prevent artificial light from shifting your circadian rhythm. This helps your body naturally prepare for earlier, more restorative sleep.

11. Consume Antioxidant-Rich Berries

Regularly eat a variety of berries like raspberries, blueberries, and strawberries, as they are packed with antioxidants. These compounds help reduce oxidative stress in the body, which is crucial for maintaining a healthy immune system and fighting infections.

12. Supplement NAC in Winter

Consider supplementing with N-acetylcysteine (NAC) at 600 milligrams twice daily during the winter season. Research suggests NAC can help reduce the severity of flu symptoms by recharging the body’s antioxidant systems, even if it doesn’t prevent infection.

13. Practice Home Hydrotherapy for Illness

For early symptoms of illness, apply hot, wet towels to the body for about 20 minutes until sweating, followed by a cold, wet towel with friction over the chest. This method, historically used to enhance the innate immune system, can help increase interferon secretion and potentially reduce symptom severity.

14. Take Regular Contrast Showers

Incorporate contrast showers into your routine as an immune tonic, alternating five minutes of hot water with one minute of cold water, repeated three times. Use water as hot as tolerable and cold water in the 50-60°F range to stimulate the immune system.

15. Take Fat-Soluble Vitamins with Food

Always take fat-soluble vitamins, such as Vitamin D and K2, alongside a meal containing some fat. This ensures proper absorption by stimulating the body’s digestive mechanisms, like bile production.

16. Avoid High Fructose Corn Syrup

Consciously avoid consuming products containing high fructose corn syrup, as it has been shown to inactivate vitamin D and its downstream effects. This is a specific dietary choice to protect vitamin D efficacy.

17. Be Authentic in Interactions

Strive to be authentic and open in your interactions with others, allowing your true self to be seen. This approach fosters deeper human connections, which can lead to better personal well-being and potentially improved health outcomes.