It's more than 30 years since mainstream medicine acknowledged the existence of myalgic encephalomyelitis (ME) or chronic fatigue syndrome (CFS) – a condition characterised by debilitating fatigue, brain fog, sleeping problems, dizziness and pain.
asserted
medicine → acknowledge → fatigue
In that time, there has been mounting scientific evidence ME/CFS – which affects more than 400,000 people in the UK – is a genuine ailment rooted in physical causes that can lead to a wide array of symptoms.
asserted
that → mount → symptoms
Yet arguments have continued to rage over whether it's a 'real' illness (in the 1980s it was dubbed 'yuppie flu' as it seemed to mainly affect young professionals) or 'all in the mind'.
asserted
it → continue → mind
That scepticism is partly due to the variety of non-specific symptoms associated with the condition.
asserted
scepticism → associate → condition
But now scientists at the University of East Anglia have uncovered some of the strongest evidence yet that CFS is a physiological – rather than psychological – illness that may be due to changes in someone's DNA.
uncertain
that → uncover → DNA
What's more, they claim those changes might also explain chronic fatigue symptoms seen in at least four other common diseases – long Covid (which affects between 1.8 million and two million people), multiple sclerosis (MS), rheumatoid arthritis and post-traumatic stress disorder (PTSD).
uncertain
which → claim → people
For years, Emma Slack, 35, endured prejudice and disbelief – before finally having her debilitating tiredness, brain fog and sleep problems diagnosed as CFS
The study, reported earlier this month in the Journal of Translational Medicine, raises hopes a single therapy might be formulated to treat chronic fatigue in all five conditions – a total of around 5.7 million Britons.
uncertain
therapy → endure → Britons
Scientists studied the genetic make-up of people with all five illnesses and found they shared a common trait – a genetic 'switch' seemingly causing severe fatigue.
asserted
they → study → fatigue
Research lead Professor Dmitry Pshezhetskiy, who specialises in treating ME/CFS, told Good Health: 'The thing that links all these conditions is that patients frequently report remarkably similar symptoms – overwhelming fatigue, brain fog, poor concentration, disturbed sleep and a dramatic reduction in everyday functioning.'
asserted
patients → specialise → functioning
He and his team found similar 'epigenetic' changes in patients with these conditions.
asserted
He → find → conditions
Epigenetics is where environmental factors such as stress and diet can switch genes on or off, so parts of our bodies' systems behave differently.
asserted
parts → switch → systems
Although different genes were implicated in each condition, the result was the same in that the epigenetic switch that was tripped affected energy production – which could lead to chronic exhaustion.
uncertain
which → implicate → exhaustion
Those epigenetic changes may also disrupt the ways in which our bodies regulate metabolism, react to infection and respond to stress, he adds.
uncertain
he → disrupt → stress
'One of the most significant aspects of this discovery is that it provides objective, blood-based biological proof of disease,' he told Good Health.
asserted
he → provide → Health
Other studies in recent years have also highlighted physical causes that could explain symptoms of ME/CFS.
uncertain
that → highlight → CFS
For example, an Australian study last year found ME/CFS was linked to simultaneous disruptions in the way sufferers' bodies generate energy and regulate their immune systems, reported the journal Cell.
asserted
journal → find → systems
Other studies have suggested chronic fatigue can be caused by the immune system being over-reactive, treating normal stress as an infection, and causing exhausting, flu-like symptoms.
uncertain
system → suggest → symptoms
For patients with CFS such as Emma Slack, a mother-of-one from Newcastle, evidence of a distinct genetic cause also promises to help dispel the scepticism and dismissiveness that persistently confronts them.
asserted
that → promise → them
For years, Emma, 35, endured prejudice and disbelief – before finally having her debilitating tiredness, brain fog and sleep problems diagnosed as CFS.
asserted
tiredness → endure → CFS
Doctors initially blamed anxiety and sent her for counselling.
asserted
Doctors → blame → counselling
She says others have implied she is lazy and ought to start running (previously doctors told ME/CFS patients to exercise, regardless of how they felt after doing it – but in 2021, the National Institute for Health and Care Excellence did a U-turn on this advice).
asserted
Institute → say → advice
Emma's symptoms emerged in 2008, when she was 17.
asserted
she → emerge → 2008
'I became unwell with a viral illness that was suspected to be glandular fever,' she says.
asserted
she → become → illness
'I felt fluey with muscle aches and was so nauseous that I could not eat and I had fainting attacks.
uncertain
I → feel → attacks
Before contracting her viral illness, Emma had been very active, a keen dancer and runner.
asserted
Emma → contract → illness
'There are still times when I need help just to get up the stairs.
asserted
I → be → stairs
Often a flare-up means I'm in bed for a day or two.
asserted
I → mean → day
My brain function goes and I can't even answer simple questions'
asserted
I → go → questions
But she never recovered her energy levels and has since suffered with ongoing symptoms of fatigue, brain fog and sleep problems, which worsen if she does too much.
asserted
she → recover → much
Over the years, her symptoms fluctuated.
asserted
symptoms → fluctuate → years
Although Emma was able to study, eventually getting a PhD in epidemiology, her illness meant she frequently had to go part-time and work from home.
asserted
she → study → home
'For years, I did not know what was wrong with me,' she recalls.
asserted
she → know → me
'While on work placements for my degree I started to suffer badly.
asserted
I → start → degree
I went to the doctors and I was misdiagnosed as having anxiety.
asserted
I → go → anxiety
Emma consulted a counsellor: 'They told me that the symptoms were just down to "my inner child being stubborn, and that I needed to tell them that I was OK".
asserted
I → consult → them
She was told to push herself harder – but 'it just made my symptoms so much worse'.
asserted
symptoms → tell → herself
Then she was finally referred to a specialist and in 2017 was diagnosed with ME/CFS.
asserted
she → refer → CFS
'It was a huge relief to have a diagnosis that finally made sense,' she says.
asserted
she → have → sense
'However, this brought the realisation that there was nothing anyone in medicine could really do for me.
uncertain
anyone → bring → me
Meanwhile, the medical scepticism she experienced continued.
asserted
she → experience → ?
…and 21 more, not listed.