Mast cell activation syndrome (MCAS) affects more than 15% of the U.S. population but evades most practitioners’ radar. Just five years ago, it wasn’t even on my radar, despite already having 20 years of experience as a clinician at that time. The more I dug (similar to leaky gut and post-COVID syndrome), the more I found my patients were suffering from this disorder.
Greta Hysjulien Jeffrey, DAc, LAc
Greta Jeffrey is a licensed acupuncturist in Minneapolis, Minn. She received her Master of Acupuncture from Northwestern Health Sciences University in 2013 and her Doctor of Acupuncture from Pacific College of Health and Science (San Diego) in 2018. Greta is an assistant professor and the clinic co-chair in the College of Acupuncture and Chinese Medicine at Northwestern Health Sciences University. She also advises the American Society of Acupuncturists (ASA) Student Committee in its advocacy efforts; and serves as president of the NHSU College of Acupuncture and Chinese Medicine's faculty senate.