World-first evidence suggests that meditation alters cancer survivors’ cells

For the first time, scientists have found clear biological evidence that 

meditation and support groups can affect us on a cellular level. 

We’re often told that being happy, meditating and mindfulness can 
benefit our health. We all have that one friend of a friend who says 
they cured their terminal illness by quitting their job and taking up 
surfing - but until now there’s been very little scientific evidence to 
back up these claims.

Now researchers in Canada have found the first evidence to suggest 
that support groups that encourage meditation and yoga can actually
alter the cellular activity of cancer survivors.

Their study, which was published in the journal Cancer last week, is 
one of the first to suggest that a mind-body connection really does exist.


The team found that the telomeres - the protein caps at the end of 

our chromosomes that determine how quickly a cell ages - stayed 
the same length in cancer survivors who meditated or took part in 
support groups over a three-month period.

On the other hand, the telomeres of cancer survivors who didn’t 
participate in these groups shortened during the three-month study.

Scientists still don’t know for sure whether telomeres are involved in 
regulating disease, but there is early evidence that suggests shortened 
telomeres are associated with the likelihood of surviving several diseases, including breast cancer, as well as cellular ageing. And longer telomeres 
are generally thought to help protect us from disease.

"We already know that psychosocial interventions like mindfulness meditation 
will help you feel better mentally, but now for the first time we have evidence 
that they can also influence key aspects of your biology," said Linda E. Carlson, 
a psychosocial research and the lead investigator at the Tom Baker Cancer Centre, in a press release. She conducted the study alongside scientists from 
the University of Calgary.

"It was surprising that we could see any difference in telomere length at all 
over the three-month period studied," said Carlson. "Further research is 
needed to better quantify these potential health benefits, but this is an 
exciting discovery that provides encouraging news."

As part of the research, 88 breast cancer survivors who had completed their treatment more than three months ago were monitored. The average age of 
the participants was 55, and to be eligible to participate in the study they all
had to have experienced significant levels of emotional distress.

They were separated into three groups  - one was asked to attend eight 
weekly, 90-minute group sessions that provided instructions on mindfulness meditation and gentle yoga. These participants were asked to practice 
meditation and yoga at home for 45 minutes daily.

The second group met up for 90 minutes each week for the three months,
and were encouraged to talk openly about their concerns and feelings.

The third control group simply attended one six-hour stress management 
seminar.

Before and after the study, all participants had their blood analysed and 
their telomere length measured.

Both groups who attended the support groups had maintained their telomere length over the three-month period, while the telomeres of the third group 
had shortened. The two groups who'd attended the regular meetings also 
reported lower stress levels and better moods.

Although this is pretty exciting research, it’s still not known whether these 
benefits will be long-term or what's causing this biological effect. Further 
research is now needed to find out whether these results are replicable 
across a larger number of participants, and what they mean for our health 
long-term.

But it’s a pretty huge first step towards understanding more about how our 
mental state affects our health. And it's part of a growing body of research 
out there - a separate group of Italian scientists published in PLOS ONE a 
few weeks ago also showed that mindfulness training can change the 
structure of our brains.

Of course for many believers in meditation, this discovery probably isn't 
that exciting. Research back in the '80s had suggested that cancer patients 
who join support groups are more likely to survive. But as we like to say, 
peer review or it didn't happen. 

We’re (sceptically) excited.

Fiona Macdonald 8 Nov 2014. Source: EurekAlert