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2009-03-16 11:43:36
By Kenneth Macdonald
BBC Scotland Special Correspondent
The Danish government has begun paying compensation to women who have developed
breast cancer after long spells working nights.
It follows a ruling by a United Nations agency that night shifts probably
increase the risk of developing cancer.
BBC Radio Scotland's The Investigation has been hearing from experts and union
leaders in Scotland who said the UK government should be doing more to tackle
the dangers.
For years there has been growing evidence that night shifts are bad for you.
Among the symptoms: disturbed sleep, fatigue, digestive problems and a greater
risk of accidents at work.
But these are the first government payments to women who have developed breast
cancer after long spells on the night shift.
Ulla Mahnkopf is one of those who has been compensated.
Long hours
She spent 30 years as a flight attendant for the big Scandinavian airline SAS.
Long hours and disturbed working patterns came with the territory.
Then she developed breast cancer.
"It was awful telling my kids that, telling them what we were facing," she told
me.
"It's not just the surgery but all the thoughts - do I survive this? I had
bilateral cancer so not just one breast, two breasts."
At first she did not make the connection between her cancer and night working.
She said: "I had no idea.
"But when you think back now I can see that when I stopped flying it was like
coming out of a shell, I had been living in there because of jet lag and I can
see now I had a totally different life."
"The level of evidence is really no different than it might be for an
industrial chemical
Dr Vincent Cogliano
So far almost 40 Danish women have won compensation.
Not every case was successful: women who had a family history of breast cancer
were among the ones whose claims were rejected.
The Danish authorities acted following a finding by the International Agency
for Research on Cancer (IARC), an arm of the UN's World Health Organisation.
The IARC studies and ranks cancer risks.
Category One risks are known carcinogens such as asbestos. Night working now
sits just one rung below that: a probable cause of cancer.
Dr Vincent Cogliano of the IARC said they reached their conclusion after
looking at a wide number of studies of both humans and animals.
He said there was evidence to support the hypothesis that alterations in sleep
patterns could suppress the production of melatonin in the body.
"Melatonin has some beneficial effects in preventing some of the steps leading
to cancer," he said.
"The level of evidence is really no different than it might be for an
industrial chemical."
Here in the UK unions estimate about 20% of the national workforce is involved
in night shifts.
Margaret Ann Hancock from Edinburgh was like many parents who take on the night
shift: she needed the extra money and had a young family to care for.
When she started work at the former Leith Hospital in the 1980s, her shift
pattern allowed her to take her three children to nursery when she got home,
sleeping just a few hours before picking them up again.
At the time, she said, tiredness and disrupted meals seemed a reasonable price
to pay: "I felt like I battled time continually.
"There's only so much you can get done in a day.
"And because I did split nights, I often wasn't sleeping until the following
day.
"My sleeping patterns, even now, my eating patterns - that side of it is still
with me."
It was during her time at Leith hospital that she developed breast cancer,
undergoing a lumpectomy, radium treatment and chemotherapy.
At the time, she said she would never have dreamt that there could have been a
connection between her disease and her night work.
But now that she knows it is a possibility, as a breast cancer survivor, she
has a clear message for other women who may find themselves in her position:
"You should have a choice whether or not to do nights.
"If I knew then what I know now...you would be better, if there is an
alternative.
"Because if it's risking your health, there's nothing worth that."
Professor Andrew Watterson, an occupational health specialist at Stirling
University, said we are far behind Scandinavia in recognising the dangers.
"I think we can say there is a big public health problem here," he said.
"The evidence has been good over a long period of time about cardiovascular
disease and night work, gastro-intestinal problems and nights.
"Work indicates there may be risks in terms of low birth-weight babies and
longer pregnancies for women.
"We don't tend to identify the damage being done where shift working is
prevalent and I think that's an error. The damage is there but we don't see it
and we don't count it."
At the Health and Safety Executive, chief medical officer Dr John Osmond said
they were aware of the debate and have commissioned their own research.
"The HSE has been very on the ball in this area and has commissioned a very
eminent epidemiologist to examine the risk of working at night and whether
there is any link to breast cancer. This report will be completed in 2011."
But assistant general secretary of the Scottish TUC, Ian Tasker, thinks the UK
is lagging behind.
He fears workers may be missing out on health checks to which they are entitled
under the existing law.
Greater awareness
"I don't think we have enough evidence to say they're not," he said.
"But we have a feeling that perhaps employers are taking the opportunity to
ensure these health checks are not carried out or, if they are, it's very much
a tick-box approach to it."
In the meantime unions are calling for a greater awareness of the dangers of
night shifts.
But for some workers, such as Ulla Mahnkopf, that is already too late.
She said she would have given up her job if she had known the dangers.
"I wouldn't have been flying for that many years, definitely not. Because it's
cancer you can die from. So I would like to stay alive."