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    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...