“They found that the strongest signal was coming from serotonin. Peripheral serotonin levels were very similar between those who are acutely active with Covid and those who had Long Covid and much lower than those who had recovered from Covid and did not have persistent symptoms.”

“60 to 70% of the Long Covid patients with that specific people phenotype - that type of pattern of symptoms - got quantifiable, abnormal pain PET scans, which puts the problem, I think, really in the brain.”

“I would word this as a massive public health problem… crisis that most of the world is yawning through and sleepwalking through. I think people are sleepwalking through this because it's too invisible.”

Dr Jim Jackson, research professor of Medicine and Psychiatry at Vanderbilt University Medical Centre, does not believe that Long Covid is all in your mind, but he has found that treating the brain, as if it has a brain injury, can help Long Covid recovery. In this week’s episode Dr Jackson explains his clinical experience of the neurological impact of Long Covid from brain fog to anxiety, PTSD to OCD. He discusses the power of cognitive rehabilitation (which should be viewed as physiotherapy for the brain) and tells us about his book “Clearing the Fog: A practical guide to surviving and thriving with Long Covid”. And he talks us through the power of talking to others within the community: his support groups have been a hugely impactful for sufferers enabling them to learn from each other, learn how to advocate for themselves, and give them hope.