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Jess Lewis

Jess Lewis, PhD(c), is an engineer-turned-functional medicine practitioner specializing in Mast Cell Activation Syndrome (MCAS) and Long Covid recovery. After a health collapse triggered by mold and viral exposure left her mostly bedbound, Jess leveraged her background in molecular biology and systems engineering to map her own path to healing.


Her signature approach blends evidence-based functional medicine, nutrition psychology, and nervous system regulation to address the root causes of chronic illness and create lasting recovery. Now pursuing her PhD with a focus on MCAS, Jess leads Mast Cell Collective, where she helps clients navigate complex conditions with clarity, compassion, and proven frameworks.


Connect with Jess:

By visiting her website at jesslewis.com or on Threads and Instagram @jesslewis.

https://jesslewis.com

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