Fascinating and perhaps important video from MedCram today.
Can Hot/Cold Therapy Boost Immunity?
If you want to try using saunas/hot baths to activate your immune system (simulate a fever),
be careful. Hot temperatures can have bad effects on your circulatory system. For instance, if your heart cannot maintain your blood pressure as blood vessels near your skin dilate, you could lose consciousness. There could be other problems, too. As Dr. Seuhult says,
consult your physician.
Two countries have a culture of saunas/hot baths, Japan and Finland. Neither is doing badlly with Covid19 so far.
This is all very interesting since it ties together a lot of features of the disease. Covid19 gets an upper hand by suppressing the innate immune system. Children have robust innate immune systems, so they do not get severe disease from it. The disease progresses fairly slowly, in contrast to the flu which comes on quite suddenly. In most people first Covid19 has to suppress the innate immune system. After that it can cause havoc.
The hopeful part is that both increasing
and decreasing core body temperatures help activate the innate immune system. Seuhult goes through a number of papers on research done on the effects of Finnish style saunas and related phenomena. It
seems like temporarily vaccinating the innate immune system which is what the BCG vaccine (for tuberculosis) also
seems to do. There's a previous MedCram video discussing the BCG vaccine.