Ketogenic diet vs fasting
Dr. Palmer compared some aspects of the ketogenic diet to the fasted state and I wondered how the two compare. Does a prolonged (4/5 day) fast have a supercharged effect compared to a few weeks or months of keto? There's probably no data directly comparing the two, but maybe Dr. Palmer can give a rough estimate.
Morning/Afternoon Light & Contact Lenses with UV Protection
Can we still obtain the benefits of recommended morning and afternoon light while wearing contact lenses? Dr. Huberman, you have mentioned that we still stand to gain from the benefits of sunlight with contact lenses. As I have understood from your podcast, we are particularly interested in UVB light in the morning/afternoon (recently in Episode 68). It seems to me that modern contact lenses, particularly those that offer UV protection, would prohibit the entry of UVB (e.g. shortwave light) and thus the regulatory benefits that you have mentioned (e.g. regulate the pineal’s gland release of melatonin. According to a study provided by the NIH (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105637/), “When compared to contact lenses without UV blocker such as Air Optix Night & Day (lotrafilcon A, Alcon, Texas, USA), they offer 10-fold more protection for UVA and 17-fold for UVB reaching 96% and 100% blocking of UVA (Fig. 1C) and UVB (Fig. 1D)” Thank you for considering this question.
Sauna effects on hair and scalp
I have been using sauna more frequently. Some online sources (not from scientific literature) suggest a lot of heat (from sauna or other sources) may be bad for the condition of existing hair and/or hair follicles. Suggestions to ameliorate include wrapping a cloth soaked in cold water around the head while in a dry sauna. It seems pretty obvious that excessive heat can damage existing hair. Given how heat seems to be good for other parts of the body, is ambient sauna heat it also damaging to the scalp and hair follicles themselves? And would wearing a cold wrap around the head reduce the overall beneficial effects of the sauna in shielding the head from the heat? Also - I just want to thank you. I have been dealing with a lot of health issues the last few years, and I can't express enough how the information you share on your podcast has helped me address many of the issues in meaningful ways and really improve my life quality.