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Night-shift work may be a cancer risk
Although scientists are still unable to identify all the environment causes of breast cancer, the evidence is getting
clearer that women who work in the night shift may be at higher risk than others. The theory, that the disruption of circadian (24 hours cycle) rhythm could be a culprit, puts shift-work on a par with ultraviolet radiation or anabolic steroids, as a suspected carcinogen. However, it does not say it is a definite cause of cancer, like cigarette-smoking.
Another study found that rats exposed to high levels of electric light were more likely to get mammary cancer than rats exposed to lower levels. The idea is that artificial light disrupts the body’s circadian rhythm, which governs sleep and wakefulness. The disruption affects the production of hormones such as melatonin, which in turn triggers cancer.
The theory may also explain why women in northern latitudes tend to get ovarian cancer more often. The light at night may be changing nature in ways we do not understand yet.
A third study has found that women living in urban areas are significantly more susceptible to the disease than those living in the countryside.
Stress can double the chances of developing breast cancer, while being thin increases the risk of the disease in the years leading up to middle age.
Vitamin D may extend your life
Doctors have said for years that Vitamin D, also called Sunshine Vitamin, is good for your bones and cuts the risk of cancer and diabetes. Now, a new study has revealed that taking it everyday might extend your life too. A study by a team of international researchers has found that taking a daily dose of Vitamin D lowers the risk of mortality. Their findings have been reported in the Archives of Internal Medicine journal.
They came to the conclusion after analysing 18 trials involving Vitamin D supplements on nearly 57, 000 patients.
However, according to them, getting enough Vitamin D in one’s diet is not enough; one should also spend 10 minutes in the sun during peak hours daily, to produce the recommended level of Vitamin D.
Braiding hair can cause baldness in women
According to researchers hairstyles which tightly braid the hair at the top of the head can lead to permanent bald patches. Hair-dressing styles, which pull the hair, are to blame, particularly if combined with hair straightening chemicals.
Braiding is very common. Most of the traditional hairstyles involve braiding the hair in a long, tapering, rope-like appearance.
They found that nearly 1 in 7 children and 33% women suffered from ‘traction alopecia’, a type of hair loss directly linked to the hair being constantly under tension. The problem was even more common if chemical ‘relaxers’ had been used to straighten the hair.