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<pre><pre>Working in night shifts is NOT linked to an increased risk of breast cancer

Women who work night shifts do not have a greater risk of breast cancer according to a large scientific analysis.

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For decades it has been suggested that the burning of midnight oil could increase the risk of the deadly disease.

But researchers have now destroyed the fears, after finding no evidence of a greater risk of breast cancer among female night shift workers.

Charities have said that the findings & # 39; the hundreds of thousands of women & # 39; need to reassure that & # 39; work overnight.

For decades it has been suggested that the burning of midnight oil could increase the risk of the deadly disease. But researchers have now destroyed the fears

The study comes at the heels of an overview by the International Agency for Cancer Research on the link between shift work and cancer.

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The body, part of the World Health Organization, concluded in 2007 that shifts that disrupt the sleep cycle & # 39; probably carcinogen & # 39; goods.

A possible link between exposure to electric light & night and an increased risk of breast cancer was first proposed more than 30 years ago.

It was feared that shift work could disrupt the body's internal clock, suppress the levels of the sleep hormone melatonin, and increase estrogen levels.

However, the evidence was inconclusive and recent research has suggested that there can be no impact on the risk of breast cancer.

Scientists from the Institute of Cancer Research in London followed more than 100,000 women over the course of a decade.

The study, considered the largest of its kind, found that 50 of the women developed breast cancer.

However, no evidence was found that women who regularly work night shifts are more at risk of contracting the deadly disease.

WHY KNOW SCIENTISTS THAT NIGHT LOSS CAUSES CANCER?

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The study comes at the heels of an overview by the International Agency for Cancer Research on the link between shift work and cancer.

The body, part of the World Health Organization, concluded in 2007 that shifts that disrupt the sleep cycle & # 39; probably carcinogen & # 39; goods.

A possible link between exposure to electric light & night and an increased risk of breast cancer was first proposed more than 30 years ago.

It was feared that shift work could disrupt the body's internal clock, suppress the levels of the sleep hormone melatonin, and increase estrogen levels.

However, the evidence was inconclusive and recent research has suggested that there can be no impact on the risk of breast cancer.

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The link remained true regardless of the different types of work they did with night shifts, and the age at which they started such work.

Volunteers were initially asked about their work habits in the past 10 years, including how often they performed night shifts.

Almost one fifth of the women – around 17.5% – indicated that they had performed night shifts at some point during their studies.

Data were also collected on known risk factors, including obesity, physical activity levels, alcohol use and HRT use.

The researchers, led by Dr. Michael Jones and professor Anthony Swerdlow, asked the participants the same questions six years later.

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Baroness Delyth Morgan, chief executive of Breast Cancer Care and Breast Cancer Now, welcomed the results.

She said: & We hope these findings will reassure the hundreds of thousands of women who work night shifts.

& # 39; This question has been widely discussed in recent decades and has understandable cause for concern.

& # 39; And it is encouraging that the evidence now suggests that night shift does not affect breast cancer risk. & # 39;

Baroness Morgan added that she is now waiting for the IARC to revise the worldwide evidence to get & # 39; even more clarity about the problem & # 39 ;.

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Dr. Jones said he was happy & # 39; to see more evidence suggesting that night shifts are not related to a higher risk of breast cancer & # 39 ;.

But he added that the effects of a person's body that & # 39; are disturbed over very long periods of time & # 39; still a mystery.

The results of the study were published in the British Journal of Cancer.

Breast cancer is the most common cancer in the UK, with around 55,000 women and 350 men diagnosed each year.

Maintaining a healthy weight, staying physically active and drinking less alcohol can all lower the risk of the disease.

WHAT IS BREAST CANCER, HOW MANY PEOPLE DO IT AND WHAT ARE THE SYMPTOMS?

Breast cancer is one of the most common forms of cancer in the world. Every year in the UK there are more than 55,000 new cases and the disease claims the lives of 11,500 women. In the US, it kills 266,000 people every year and kills 40,000. But what causes it and how can it be treated?

What is breast cancer?

Breast cancer develops from a cancer cell that develops in the lining of a canal or lobulus in one of the breasts.

When breast cancer has spread into the surrounding breast tissue, it becomes an & # 39; invasive & # 39; called breast cancer. Some people are diagnosed with & # 39; carcinoma in situ & # 39; where no cancer cells have grown beyond the canal or lobule.

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Most cases develop in women older than 50, but younger women are sometimes affected. Breast cancer can occur in men, although this is rare.

The cancer cells are classified from the first phase, which means slow growth, to phase four, which is the most aggressive.

What causes breast cancer?

A cancerous tumor starts with an abnormal cell. The precise reason why a cell becomes cancerous is unclear. It is thought that something damages or changes certain genes in the cell. This makes the cell abnormal and multiplies & # 39; out of control & # 39 ;.

Although breast cancer can occur for no apparent reason, there are some risk factors that can increase the chance of developing breast cancer, such as genetics.

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What are the symptoms of breast cancer?

The usual first symptom is a painless lump in the breast, although most breast lumps are not cancerous and are fluid-filled cysts that are benign.

The first place that breast cancer usually spreads to is the lymph nodes in the armpit. If this happens, you will develop a swelling or lump in an armpit.

How is breast cancer diagnosed?

  • First assessment: a doctor examines the breasts and armpits. They can perform tests such as a mammography, a special x-ray of the breast tissue that may indicate the possibility of tumors.
  • Biopsy: A biopsy is when a small piece of tissue is removed from a part of the body. The sample is then examined for abnormal cells under the microscope. The sample can confirm or exclude cancer.

If it is confirmed that you have breast cancer, further tests may be needed to assess if it has spread. For example a blood test, an ultrasound scan of the liver or a chest x-ray.

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How is breast cancer treated?

Treatment options that can be considered include surgery, chemotherapy, radiotherapy and hormone treatment. A combination of two or more of these treatments is often used.

  • Surgery: breast-conserving surgery or removal of the affected breast depending on the size of the tumor.
  • Radiotherapy: a treatment that uses high-energy rays aimed at cancerous tissue. This kills cancer cells, or prevents cancer cells from multiplying. It is mainly used in addition to surgery.
  • Chemotherapy: a treatment for cancer through the use of anti-cancer drugs that kill cancer cells, or to prevent them from multiplying
  • Hormone treatments: Some types of breast cancer are influenced by the & # 39; female & # 39; hormone estrogen, which can stimulate cancer cells to divide and multiply. Treatments that lower the levels of these hormones, or make them not work, are often used in people with breast cancer.

How successful is the treatment?

The outlook is best for those who are diagnosed when the cancer is still small and has not spread. Surgical removal of a tumor at an early stage can then give a good chance of a cure.

The routine mammography offered to women between the ages of 50 and 70 means that more breast cancers are diagnosed and treated at an early stage.

For more information, visit breastcancercare.org.uk or www.cancerhelp.org.uk

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