Risk of Night Work

Night shift will of course keep people awake at work (insomnia), but also provide new problems for health.

Several studies have shown to work in the evening turned out to contribute to bad for your health. Here are some health problems you will face if it still continues to work at night.


The findings by the Danish Cancer Society recently showed night-shift workers have a higher risk of breast and prostate cancer. In fact, women who work more than two nights a week for six years to raise the risk doubled.

Working at night can suppress melatonin production (which is produced by the pineal gland in the brain between the hours of 9 pm to 8 am). Melatonin is a hormone that regulates sleep patterns and helps suppress tumors. Research indicates that low levels of the hormone melatonin can promote tumor growth.


Research in the journal PLoS Medicine shows that women working night shift for 1-2 years had a risk of diabetes increases by up to 5 percent. In fact, those who work more than 20 years in this shift would increase the risk of reaching 60 percent.

Working in an unusual work hours can affect eating and sleeping habits. Changes in sleep patterns that do not normally make the body must fight to control blood sugar.

Heart disease

Recent findings in the British Medical Journal showed that overall, the night shift workers was associated with an increased risk of 23 percent of heart attack, coronary heart disease 24 percent and 5 percent of stroke.

Night shift workers tend not to have a lot of time off, thereby disrupting the body clock and tend to be associated with obesity, blood pressure and high cholesterol levels, and diabetes, all of which are risk factors for stroke.

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