work causes cancer

Further to this earlier post that health inequalities between rich and poor have widened since Labour came to office in 1997 , American research shows that night-shift workers, and their number is growing by about 3% per year, according to the Bureau of Labor Statistics , are known to be at higher risk for accidents, sleep disorders and psychological stress due to daytime demands, such as family and other obligations, that interfere with sleeping. Now scientific evidence suggests their disrupted circadian rhythms may also cause a kind of biological revolt, raising their likelihood of obesity, cancer, reproductive health problems, mental illness and gastrointestinal disorders.

The evidence for an increased cancer risk is so compelling that, in December, the International Agency for Research on Cancer, a unit of the World Health Organization, declared that shift work is "probably carcinogenic to humans."

*Night-shift workers have a 40% to 50% increased risk of heart disease compared with day workers, various studies have found.
* People who get five hours of sleep, common among night-shift workers, are 50% more likely to be obese than normal sleepers, Columbia University researchers have found. Several dozen other studies have tied sleep loss to weight gain as well.
* Women night-shift workers have higher rates of miscarriage, pre-term birth and low birth-weight babies.
* Night-shift workers show increased rates of breast (by 50%) and colon (by 35%) cancer in numerous, independent studies. And animal studies have shown that exposure to dim light during the night-time can substantially increase tumor development.