Health & FitMorning people may have a lower risk of breast cancer, says study

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Sleep traits could be a risk factor for breast cancer, new research suggests. Women who said they preferred to get out of bed early were found to have a lower risk of breast cancer than those who stay up late.

However, experts cautioned that other breast cancer risk factors such as alcohol consumption and being overweight have a greater impact than sleep and said there was no reason to change your sleep patterns.

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Your individual breast cancer risk may be higher or lower , depending on a number of factors, including family history, reproductive history (such as Many studies have shown that women who have two or more alcoholic drinks each day have a higher risk of developing breast cancer .

A low -fat diet rich in fruits, vegetables and grains may lower women’s risk of dying of breast cancer , according to the results of a The study authors said the dietary-modification group used a diet similar to one called DASH — for Dietary Approaches to Stop Hypertension — which is designed to prevent

One out of 100 women who considered themselves morning people developed breast cancer, compared with two in 100 women who described themselves as evening people, according to the study, which was published Wednesday in the BMJ.

The study also found that sleeping more than the average seven to eight hours per night was found to have a slightly increased risk of breast cancer. It also found there was little link with insomnia.

Researchers used information from more than 400,000 women in two large data banks -- around 180,000 women from UK Biobank study and more than 220,000 women from the Breast Cancer Association Consortium study. Participants' preference for waking early or late was included in the data.

"It is important to note that these data do not suggest in any way that modifying sleep habits could eventually lead to a decrease in the risk of breast cancer," Luca Magnani, senior research fellow in the department of Surgery & Cancer at Imperial College London told the Science Media Centre.

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Women whose body clocks mean they are “ morning people ” have a lower risk of developing breast cancer , say UK researchers. It adds the findings are important as they may affect every woman’s risk . Experts said the study presented at the NCRI Cancer Conference in Glasgow added to a

A new and yet to be published study has found that women who are naturally early risers were found to have a lower risk of developing breast cancer than “ Cancer risks associated with a person’s body clock and sleep patterns have been reported in previous research and the UK researchers wanted to

"What they suggest is that it appears that the risk of breast cancer is associated with a genetic (thus not modifiable) trait that is in itself associated with a "morning" or "night" preference -- what we call 'larks' and 'owls'."

According to 2016 figures from the charity Cancer Research UK, breast cancer is the most common type of cancer in the UK. In the US, the American Cancer Society estimates that more than 260,000 cases of invasive breast cancer will be diagnosed in women in 2019.

Dr. Dipender Gill, a Wellcome Trust clinical research fellow at Imperial College London, said the paper is a "useful progress in the field." The study findings add to previous research suggesting a link between sleep-related behaviors and risk of negative health outcomes, he said in an email to CNN.

But the study doesn't shed light on what process causes sleep traits to affect breast cancer risk. "It may be that certain factors that affect sleep-related behaviors also affect breast cancer risk through a separate mechanism," explained Gill.

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One in 100 women who considered themselves morning people developed breast cancer (CNN) Women who are naturally early risers were found to have lower risk of developing breast cancer than The American Cancer Society says 45% of cancer deaths in the United States are linked to

A study found a woman who traditionally wakes up early in the morning has up to a 48 percent lower risk of developing breast cancer based on data from participants in England. In addition, women who slept longer than seven to eight hours had a 20 percent increased risk per additional hour slept.

In this case, improving sleeping patterns would not necessarily reduce the risk of breast cancer, he said. "There is still some way to go before we fully understand the implications of sleeping patterns on health."

The study was first presented in November 2018 at the NCRI Cancer Conference in Glasgow.

Read: Sleep: Do you get enough?

Genes, sleep and health

Co-author Caroline Relton, professor of epigenetic epidemiology at the University of Bristol, in the UK, said that sleep had systemic and far-reaching consequences on people's health.

"The message is that perhaps people don't fully appreciate that sleep is really important and does have health benefits beyond not feeling physically tired and being cognitively alert and so forth," said Relton, who is also director of the Bristol Population Health Science Institute.

"The main lifestyle risk factors that we know are clearly associated with breast cancer are alcohol intake and obesity or high Body Mass Index," said Relton.

"Sleep is likely to be an important risk factor for breast cancer, but it isn't as large as other well-established risk factors like BMI or alcohol," said lead author Dr. Rebecca Richmond, last year. Richmond is currently a research fellow at the MRC Integrative Epidemiology Unit at the University of Bristol.

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In women specifically.

One in 100 women who label themselves as morning people developed breast cancer , while two in every 100 women who aren't morning people develop it. New research conducted in the UK found that women who wake up earlier in the morning have a lower risk of developing breast cancer .

The study found that a preference for mornings reduced the risk of breast cancer by 40 per cent compared with being an evening type. It also found that women who slept longer than the recommended seven to eight hours had a 20 per cent increased risk of the disease per additional

Our genes are now known to influence whether we're early risers or not and our "chronotype" -- or time of day preference -- affects not only your sleep patterns but your hormone levels and core body temperature. However, it's not entirely innate. Lifestyle factors, including diet, daily activities and exposure to artificial light, influence your chronotype.

In an editorial linked to the study, Eva Schernhammer, a professor from the University of Vienna said the findings identified "a need for future research exploring how the stresses on our biological clock can be reduced."

It's the people with the biggest mismatch between their chronotype and daily activities that are most at risk, she said.

Schernhammer cited observational studies that suggested that unlike night owls, early risers that work night shifts have an increased risk of type 2 diabetes. This provided "additional support for the biological importance of circadian misalignment," she said.