Metabolic Health, Insulin, and Breast Cancer: Why Oncologists Should Care About Insulin

Studies investigating the potential link between adult pre-menopausal obesity [as measured by body mass index (BMI)] and triple-negative breast cancer have been inconsistent. Recent studies show that BMI is not an exact measure of metabolic health; individuals can be obese (BMI> 30 kg/m2) and metabolically healthy or lean (BMI
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research

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Obesity is characterized by an excess of adipose tissue, due to adipocyte hypertrophy and hyperplasia. Adipose tissue is an endocrine organ producing many bioactive molecules, called adipokines. During obesity, dysfunctional adipocytes alter adipokine secretion, contributing to pathophysiology of obesity-associated diseases, including metabolic syndrome, type 2-diabetes, cardiovascular diseases and many types of malignancies. Circulating adiponectin levels are inversely correlated with BMI, thus adiponectin concentrations are lower in obese than normal-weight subjects. Many clinical investigations highlight that low adipon...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Dan Hu1†, Meijin Zhang2†, Hejun Zhang1, Yan Xia1, Jinxiu Lin2, Xiongwei Zheng1, Feng Peng2* and Wenquan Niu3* 1Department of Pathology, Fujian Cancer Hospital &Fujian Medical University Cancer Hospital, Fuzhou, China 2Department of Cardiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, China 3Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China Background and Objectives: Growing evidence indicates that metabolic syndrome confers a differential risk for the development and progression of many types of cancer, especially in the digestive tr...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Conclusions: Bariatric surgery appears to be capable of partially reversing the obesity-related epigenome. The identification of potential epigenetic biomarkers predictive for the success of bariatric surgery may open new doors to personalized therapy for severe obesity. Introduction Obesity is currently a huge healthcare problem, worldwide, and is a risk factor for several diseases such as type 2 diabetes (T2D), cardiovascular disease and cancer (1). As the prevalence of obesity reaches pandemic proportions, this metabolic disease is estimated to become the biggest cause of mortality in the near future (2). In fact,...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Ryan R. Kelly1,2†, Lindsay T. McDonald1,2†, Nathaniel R. Jensen1,2, Sara J. Sidles1,2 and Amanda C. LaRue1,2* 1Research Services, Ralph H. Johnson VA Medical Center, Charleston, SC, United States 2Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States The significant biochemical and physiological effects of psychological stress are beginning to be recognized as exacerbating common diseases, including osteoporosis. This review discusses the current evidence for psychological stress-associated mental health disorders as risk factors for os...
Source: Frontiers in Psychiatry - Category: Psychiatry Source Type: research
Breast cancer is the most prevalent cancer in the U.S., affecting almost 85 of every 100,000 Americans, according to recent data from the World Health Organization’s International Agency for Research on Cancer (IARC). Around the globe, 627,000 people are projected to die from breast cancer this year alone. The silver lining is that with early detection and proper care, breast cancer is among the most treatable forms of the disease. In the U.S., breast cancer deaths dropped by 40% between 1989 and 2015, thanks to better screening and access to care — but a large body of research suggests that widespread adoption...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized breast cancer news Source Type: news
AbstractPurpose of reviewObesity contributes to an estimated forty-percent, or 630,000 cases, of malignant neoplasms diagnosed in the United States, and higher body mass index (BMI) has been associated with at least seventeen types of solid tumors, including 9% of all breast cancer cases. In this review, we discuss the impact of obesity and consequences of obesity, including the metabolic syndrome and type 2 diabetes mellitus, on breast cancer risk and recurrence.Recent findingsRecent work has identified multiple molecular mechanisms that may underlie the association between obesity and breast cancer. In particular, insuli...
Source: Current Surgery Reports - Category: Surgery Source Type: research
By now, most people have been to a holiday party or two. Lots of food, lots of eggnog and other carb laden alcoholic beverages, and lots of grazing all day long on all the boxes of candy friends and business acquaintances sent to us. It's easy to gain the five pounds most people gain during the holidays, and in the process, raise your blood sugar or glucose levels too high. That's your body letting you know you have prediabetes (higher than normal but still below diabetes levels) or diabetes, and unless you take action soon, your body won't like it. Diabetes silently sneaks up on you and if untreated, slowly weakens your ...
Source: Healthy Living - The Huffington Post - Category: Consumer Health News Source Type: news
Abstract The aim of the research was to examine the expression level of microRNA221/222 (miR-221/222) in the serum of patients with type 2 diabetes mellitus (T2DM) who are also diagnosed with post-menopausal breast cancer. We aimed to evaluate the differences in microRNA expression in patients with T2DM alone, patients with post-menopausal breast cancer alone, and patients with both T2DM and post-menopausal breast cancer. We selected 20 cases from a healthy control group, 30 cases from the group of patients with T2DM and obesity, 30 cases from the group of the patients with post-menopausal breast cancer, and 30 ca...
Source: Genetics and Molecular Research - Category: Genetics & Stem Cells Authors: Tags: Genet Mol Res Source Type: research
ConclusionThis large and long-term cohort study showed that women with the top fifth highest average fibre intake during adolescence and early adulthood were around 25% less likely to develop premenopausal breast cancer decades later than those in the bottom fifth.This raises the suggestion that young women might be able to significantly lower their risk of breast cancer – the most common cancer in the UK – simply through eating more high-fibre foods such as fruits and vegetables.However, it’s worth noting a few points before accepting these promising results at face value. Total dieta...
Source: NHS News Feed - Category: Consumer Health News Tags: Cancer Food/diet Source Type: news
Obese postmenopausal women have an increased breast cancer risk, the principal mechanism for which is elevated estrogen production by adipose tissue; also, regardless of menstrual status and tumor estrogen dependence, obesity is associated with biologically aggressive breast cancers. Type 2 diabetes has a complex relationship with breast cancer risk and outcome; coexisting obesity may be a major factor, but insulin itself induces adipose aromatase activity and estrogen production and also directly stimulates breast cancer cell growth and invasion. Adipose tissue inflammation occurs frequently in obesity and type 2 diabetes...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Review Source Type: research
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