Snacking Late At Night Increases Risk Of Breast Cancer And Diabetes, Study Suggests

Snacking At Night May Increase Your Risk Of Cancer And Diabetes

Eating a late dinner or snacking at night may increase a person's risk of breast cancer and diabetes, according to a new study.

The research found that increasing the amount of time spent fasting overnight reduces blood sugar levels and in turn, reduces the risk of both diseases.

A total of 2,212 female participants recorded their eating and sleeping patterns for a year under the study, which was conducted by scientists at the University of California.

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Upon analysing their data, the researchers found that for every three hours of extra fasting per night, participants were 20% less likely to suffer from high blood sugar.

It is thought high or unstable blood sugar levels may be linked to an increased risk of cancer and diabetes.

"Increasing the duration of overnight fasting could be a novel strategy to reduce the risk of developing breast cancer," Catherine Marinac, lead author of the latest paper said in a statement.

"This is a simple dietary change that we believe most women can understand and adopt. It may have a big impact on public health without requiring complicated counting of calories or nutrients."

The research is published in the journal Cancer Epidemiology, Biomarkers & Prevention.

Previous research has suggested that women who work on night shifts - who are more likely to eat at night - have an increased risk of breast cancer.

Researchers from Queen's University in Canada found that women who had worked for 30 or more years on the night shift had a doubled risk for developing breast cancer compared with women who worked 29 or fewer years during nights.

Co-author of the University of California study, Ruth Patterson, said: "The dietary advice for cancer prevention usually focuses on limiting consumption of red meat, alcohol and refined grains while increasing plant-based foods.

"New evidence suggests that when and how often people eat can also play a role in cancer risk."

Lifestyle Risk Factors For Cancer
Smoking(01 of11)
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It's no surprise smoking is the number one thing to avoid in order to prevent cancer. It's responsible for 30 per cent of all cancer deaths, and smoking can increase the risk of lung cancer, for example, by nine times. (credit:Hemera Technologies via Getty Images)
Secondhand Smoke(02 of11)
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Even if you don't smoke, you can be affected by those around you. People who are near smoking are 1.4 times more likely to get lung cancer than others. (credit:CMSP via Getty Images)
Excess Body Weight(03 of11)
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Not having a healthy body weight (defined generally as a BMI of lower than 25) can increase your risk for a variety of cancers, including esophageal, uterine, liver, kidney, pancreatic, breast and colorectal cancer. (credit:bowie15 via Getty Images)
How You Eat(04 of11)
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It's a big yes for veggies and fruit, as well as fibre, but red and processed meat is what you want to avoid. While eating lots of fibre, for example, can help reduce colorectal cancer risk, eating the meats can increase it. (credit:Maximilian Stock Ltd. via Getty Images)
Drinking(05 of11)
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Drinking any type of alcohol — at all — increases your risk for head/neck, esophageal, colorectal, breast and liver cancer (and potentially pancreatic too). You can decrease the risk by keeping your alcohol use confined to one drink a day for women, and two for men. (credit:Roy Mehta via Getty Images)
Physical Activity(06 of11)
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Getting at least 30 minutes of physical activity every day is what you should be aiming for. Otherwise, you're at risk for colorectal cancer and could be setting yourself up for lung, uterine and breast cancer. (credit:Brent Winebrenner via Getty Images)
How Much You Sit(07 of11)
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We've heard about many ways in which sitting is bad for your health, but this could be the scariest one. Sitting too much (which is different from having physical activity) can increase your risk for colorectal, uterine, ovarian and prostate cancer. (credit:Science Photo Library via Getty Images)
UV Radiation(08 of11)
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Viruses(09 of11)
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Hepatitis B and HPV both increase the risk for cancer, but there are vaccines that can help prevent them. (credit:Martin Botvidsson via Getty Images)
Radon(10 of11)
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The presence of radon gas is associated with an increased risk for lung cancer — test your home to see if it's there. (credit:Zirafek via Getty Images)
Hormones(11 of11)
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This one is a double-edged sword. For women taking HRT post-menopause, it can increase the risk of breast, uterine and ovarian cancer, but may help decrease the risk for colorectal cancer. Birth control pills, meanwhile, have been associated with an increased risk for breast, cervical and liver cancer, but a decreased risk for uterine and ovarian cancer. If you're concerned, talk to your doctor about options. (credit:Stephan Zabel via Getty Images)