SNPedia is waring about:
"The scientific credentials of Dr. Amy Yasko are strongly questioned by these sources:"
https://www.snpedia.com/index.php/Yasko_Methylation
Er, if you bother to read the rest of the stuff on this page, it describes Yasko's approach, which is actually based on quite a bit of research during her academic research career:
Dr. Amy has a PhD in Microbiology/Immunology
/Infectious Disease from Albany Medical College, along with multiple postdoctoral fellowships including Yale Medical center, Wilmont cancer center URMC, and Pediatric Infectious Disease at URMC.
She has served as a member of the scientific advisory board for NFAM (National Foundation of Alternative Medicine) and the Documenting Hope Project for chronic illness. Dr. Amy worked in biotechnology for 15 years, codeveloping the first low cost DNA synthesizer and co owned a DNA technology company as an inventor on multiple patents involving DNA and RNA technology.
She was a pioneer in nutrigenomics and the body of knowledge has evolved over time as research has fleshed out the theories. As a patient, I have benefited white a bit with this approach, having my genes evaluated and using that knowledge to guide my care. I've used testing to validate the theories and I'm able to use this knowledge to help myself and others.
Quackwatch and Science Based Medicine are not reputable sources of medical information. Quackwatch is run by a psychiatrist with an ax to grind and who has lost defamation lawsuits over his pillorying medical professional helping patients
SBM is run by narrow minded and exceedingly arrogant doctors, one a pediatric oncologist and the other a neurologist, together with an ancient ex-military doctor who use outdated ingornatin to slam many treatments that I've seen in practice help a good number of patients. They are not experts in ME/CFS and related conditions and their overdependence on RCTs which do not take into account individuals genetic or environmental factors, sex, age, or other factors that can confound research. Quite honestly if these two sources are against something, I've found whatever it is might be taking a good look at (using other sources. Unfortunately, theyve dissuaded patients from treatments that can help
If one wants to find answers, it's best ti do ones own investigation, finding and reading go medical journal articles and discussing them with knowledgeable people in the context of one's own characteristics, symptoms, and testing, along with whatever treatments that one is already doing, as there might be synergies or risks involved.
Does cortisol boost the immune system?
It causes your body to produce greater levels of the stress hormone cortisol. In short spurts,
cortisol can boost your immunity by limiting inflammation. But over time, your body can get used to having too much cortisol in your blood. And this opens the door for more inflammation,:
https://health.clevelandclinic.org/what-happens-when-your-immune-system-gets-stressed-out/
Steroids can suppress immune function.
According to the Cleveland Clinic:
Steroids reduce the production of chemicals that cause inflammation. This helps keep tissue damage as low as possible. Steroids also reduce the activity of the immune system by affecting the way white blood cells work.