• Welcome to Phoenix Rising!

    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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  1. SWAlexander

    A Gas Exchange Disease? Huge CDC Exercise Study Puts New Slant on ME/CFS

    Excerpt: A Gas Exchange Disease? The big problem this big study found concerned gas exchange – the ability to perfuse oxygen into the muscles and remove carbon dioxide from the blood. The ME/CFS patients did reach their anaerobic threshold at lower levels of ventilation, at lower levels of...
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