Anuradhaa subramanian, Researcher

Contraceptive pill can reduce the risk of type 2 diabetes by over a quarter in women with polycystic ovary syndrome (PCOS), revealed a study led by the University of Birmingham.The research findings published in the journal Diabetes Care also show that women with PCOS have twice the risk of developing type 2 diabetes or pre-diabetes (dysglycemia) - highlighting the urgent need to find treatments to reduce this risk.In addition to the risk of type 2 diabetes, PCOS - which affects 10 per cent of women worldwide - is also associated with a number of other conditions in the long term, such as endometrial cancer, cardiovascular disease, and non-alcohol related fatty liver disease (NAFLD).Symptoms of PCOS include irregular periods or no periods at all, which can lead to fertility issues, and many suffer from unwanted hair growth (known as 'hirsutism') on the face or body, hair loss on the scalp, and oily skin or acne. These symptoms are caused by high levels of hormones called androgens in the blood of women with PCOS.Women with PCOS also often struggle with weight gain and the cells in their body are often less responsive to insulin - the hormone that allows the body to absorb glucose (blood sugar) into the cells for energy. This reduced response to insulin can lead to elevated blood glucose levels and can cause the body to make more insulin, which in turn causes the body to make more androgens. The androgens further increase insulin levels - driving a vicious circle.The University of Birmingham-led team of scientists carried out two studies to firstly identify the risk of developing type 2 diabetes and pre-diabetes in women with PCOS, and secondly to investigate the impact of the use of combined oral contraceptives, often referred to as 'the pill', on the risk of type 2 diabetes and pre-diabetes in women with PCOS. The pill is often given to women with PCOS to improve the regularity of menstrual bleeds.Using UK patient GP records of 64,051 women with PCOS and 123,545 matched control women without PCOS, they first carried out a large population-based cohort study to analyse the risk of type 2 diabetes and pre-diabetes. They found that women with PCOS were twice at risk of type 2 diabetes or pre-diabetes, compared to those without PCOS. They also identified hirsutism (excessive hair growth) - a clinical sign of high androgen levels - as a significant risk factor for type 2 diabetes and pre-diabetes among women with PCOS.To investigate the impact of the pill on type 2 diabetes or pre-diabetes, the researchers - including experts at the RCSI University of Medicine and Health Sciences - then carried out a further nested case-control study of 4,814 women with PCOS. The scientists found that the use of combined oral contraceptives reduced the odds of developing type 2 diabetes and pre-diabetes in women with PCOS by 26 per cent.The researchers behind the study are now planning to carry out a clinical trial to further evidence their findings in the hope it will lead to changes in global healthcare policy.Co-senior author Professor Wiebke Arlt, Director of the University of Birmingham's Institute of Metabolism and Systems Research, said: "We knew from previous, smaller studies, that women with PCOS have an increased risk of type 2 diabetes. However, what is important about our research is that we have been able to provide new evidence from a very large population-based study to show for the very first time that we have a potential treatment option - combined oral contraceptives - to prevent this very serious health risk."Joint first author Dr Michael O'Reilly, Health Research Board Emerging Clinician Scientist and Clinical Associate Professor at RCSI University of Medicine and Health Sciences, added: "We hypothesise that the pill reduces the risk of diabetes by dampening the action of androgens. How does this work? The pill contains oestrogens which increase a protein in the blood called sex hormone-binding globin (SHBG). SHBG binds androgens and, thereby, renders them inactive. Thus, if the pill is taken, SHBG increases. This decreases the amount of unbound, active androgens, lowering their impact on insulin and diabetes risk."Joint first author Anuradhaa Subramanian, also of the University of Birmingham, added, "With one in 10 women living with PCOS, which is a life-long metabolic disorder, it is incredibly important that we find ways of reducing its associated health risks."Co-senior author Krish Nirantharakumar, Professor in Health Data Science and Public Health at the University of Birmingham's Institute of Applied Health Research, added: "Importantly, our data highlight that normal-weight women with PCOS were also at increased risk of type 2 diabetes and pre-diabetes. This parallels our previous finding of increased NAFLD risk in normal-weight women with PCOS, further challenging the notion that PCOS-related metabolic complications are only relevant in the context of obesity. These data suggest that, rather than obesity in isolation, PCOS-specific factors, including androgen excess, underpin the increased metabolic risk."The study was supported by funding from Health Data Research UK, Wellcome Trust, the Health Research Board, and the National Institute for Health Research Birmingham Biomedical Research Centre which is based at the University of Birmingham and University Hospitals Birmingham NHS Foundation Trust.The research was also carried out in collaboration with the University of Colombo in Sri Lanka, and McGill University in Canada.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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