Tag Archive bmi

Britain’s obese in denial about their weight

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In one of the first studies of its kind to examine British perceptions of obesity, fewer than 10 per cent of those who are clinically obese accept they have a serious weight problem. In a 2012 survey of around 2000 adults, only 11 per cent of obese women accurately acknowledged they were “obese,” with most describing themselves as “very overweight” or “just right.” And among men, only seven per cent correctly described themselves as being “obese” and another 16 per cent as “very overweight.” Approximately 10 per cent of people in the survey knew the BMI threshold for obesity and those who did were more likely to define themselves as “obese.” Researchers suggest that as bigger sizes become the new “normal,” people are less likely to recognise the health problems associated with their weight. Professor Jane Wardle, co-author and director of the Cancer Research UK Health Behaviour Centre at UCL, said: “It’s a real worry that people don’t recognise that their weight places them in the obese category, because it means they aren’t aware they are at increased risk of a number of health problems including cancer. …

Mortality risk of overweight, obesity similar for blacks, whites

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For the study, researchers led by Alpa V. Patel, Ph.D., analyzed data from the Cancer Prevention Study II (CPS-II), a large, prospective study. …

NSAIDs may lower breast cancer recurrence rate in overweight, obese women

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“Our studies suggest that limiting inflammatory signaling may be an effective, less toxic approach to altering the cancer-promoting effects of obesity and improving patient response to hormone therapy,” said Linda A. deGraffenried, PhD, associate professor of nutritional sciences at The University of Texas in Austin. The study found that women whose body mass index (BMI) was greater than 30 and had estrogen receptor alpha (ERα)-positive breast cancer had a 52 percent lower rate of recurrence and a 28-month delay in time to recurrence if they were taking aspirin or other NSAIDs. “These results suggest that NSAIDs may improve response to hormone therapy, thereby allowing more women to remain on hormone therapy rather than needing to change to chemotherapy and deal with the associated side effects and complications,” said deGraffenried. …

Body mass index associated with breast cancer, regardless of body shape — ScienceDaily

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source : http://www.sciencedaily.com/releases/2014/04/140416090805.htm

Colon cancer researchers target stem cells, discover viable new therapeutic path

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"This is the first step toward clinically applying the principles of cancer stem cell biology to control cancer growth and advance the development of durable cures," says principal investigator Dr. John Dick about the findings published online today in Nature Medicine…

Obese expectant mothers at increased risk of preterm birth

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Women who are obese during pregnancy may be at increased risk of giving birth too early, a new study from Sweden suggests. In the study, obese women were more likely than normal-weight women to give birth to extremely premature babies those born between 22 and 27 weeks of pregnancy. (Pregnancy typically lasts 40 weeks.) In addition, the more obese a woman was, the greater her risk of preterm birth was, the study found. For women with severe obesity defined as having a body mass index (BMI) between 35 and 39.9 the risk doubled, and for women with extreme obesity (a BMI of 40 or higher), the risk was triple that faced by normal-weight women (those with a BMI between 18.5 and 24.9). Although these increases in risk were considerable, very few babies are born this prematurely. Most obese women in the study did not give birth to extremely premature babies. In the study, extremely premature birth occurred in 0.17 percent of normal-weight women, 0.21 percent of overweight women, 0.27 percent of mildly obese women, 0.35 percent of severely obese women and 0.52 percent of extremely obese women. Still, “considering the high morbidity and mortality among extremely preterm infants, even small absolute differences in risks will have consequences for infant health and survival,” the researchers wrote in the June 12 issue of the Journal of the American Medical Association. The study found an association, and cannot prove a cause-effect link between obesity and premature birth. However, the findings agree with the results of previous studies that have also shown such a link. Obesity is known to increase the risk of “medically indicated” premature birth that is, premature birth that is deliberately initiated by doctors, with a cesarean section or by inducing labor. This is because obesity increases the risk of medical disorders in pregnancy, such as preeclampsia and gestational diabetes. However, the new study also found a link between severe obesity and spontaneous extremely premature birth. The study examined information from more than 1.5 million births in Sweden between 1992 and 2010. Overall, about 5 percent of babies were born prematurely (before 37 weeks of pregnancy), including 4.36 percent who were moderately premature (between 32 and 36 weeks), 0.47 percent who were very premature (between 28 and 31 weeks) and 0.23 percent who were extremely premature. The findings still need to be confirmed in other populations, the researchers said. Because obesity in pregnancy can increase the risk of health problems for the mother and the baby, experts recommend that obese women limit their weight in pregnancy. The Institute of Medicine recommends normal-weight women gain 25 to 35 lbs. during pregnancy, overweight women gain 15 to 25 lbs. and obese women gain 11 to 20 lbs. Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.source : http://www.foxnews.com/health/2013/06/11/obese-expectant-mothers-at-increased-risk-preterm-birth/

How not to gain too much pregnancy weight

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For many women, the extra calories that are vital for a healthy pregnancy often become a green light to indulge and give into cravings. In fact, more than 30 percent of women who have a normal weight before becoming pregnant gain more than the recommended amount during pregnancy, according to the Centers of Disease Control and Prevention’s Pregnancy Risk Assessment Monitoring System. If you’re overweight or obese before getting pregnant, or you gain too much weight during pregnancy, you and your baby’s health could be compromised. For starters, there’s an increased risk of high blood pressure, gestational diabetes and preeclampsia. There’s also a greater chance that you could have a miscarriage, a stillborn baby, deliver early or be required to have a cesarean section. Your baby could also develop birth defects and detecting them with an ultrasound can be tricky if you’re obese, according to Dr. Alyssa Dweck, a board-certified obstetrician and gynecologist and co-author of V is for Vagina. During labor and delivery, there’s also a higher chance for blood clots, C-section infection, and difficulty administering anesthesia. You might also have a larger baby, and studies show overweight women also have problems breastfeeding. Plus, losing weight after delivery could be tough too. Several rat studies also indicate that babies born to overweight moms might actually have permanent changes in their brain structures and genetic preferences that could put them at risk for cardiovascular disease, high blood pressure, and diabetes. “It is possible that we’re creating a generation of kids who are more likely to be obese, and as they grow up and have children, it creates more and more of a genetic problem,” said Melinda Johnson, a registered dietitian and spokesperson for the Academy of Nutrition and Dietetics. Babies born to overweight mothers are also more likely to be overweight themselves, but it’s not clear if it’s because they have the same eating habits as their moms or if it’s just plain genetics, according to Johnson. Regardless, “pregnancy is a great time for future mothers to start learning better habits, because we definitely know those habits play a huge role in the health of their children,” she said. If you’re planning to get pregnant or you already are, find out what you can do to have a healthy weight.   Know the guidelines Even if you’re already overweight, weight loss should never be your goal during pregnancy, according to Dweck.  Instead, follow the Institute of Medicine’s guidelines for pregnancy weight gain, which are based on your body mass index (BMI). So if your BMI is normal, aim to gain 25 to 35 pounds; if you’re overweight stay within 15 to 25 pounds, and if you’re obese, 11 to 20 pounds. Take your vitamins To make sure you’re getting the right amount of nutrients, look for a prenatal vitamin with 1 milligram of folic acid, iron and docosahexaenoic acid (DHA). A good prenatal should also have 1200 milligrams of calcium and 600 to 1,000 milligrams of vitamin D. Eat a balanced diet It’s important to eat regular meals throughout the day to keep your blood sugar steady and your energy levels up. Johnson recommended eating every two to four hours depending on how hungry you are.  It’s OK to give into your cravings, but try to put the focus on eating lots of fruits and vegetables, whole grains, lean proteins, and low-fat dairy. Instead of eating foods loaded with saturated fats, opt for those with heart healthy fats like salmon, avocado, nuts and seeds. Drink plenty of water and nix soda, juice and sugary drinks. “Those are empty calories; they’re never going to make you feel full,” Dweck said. Talk to an expert If you’re worried about your weight or your diet, talk to your doctor or a registered dietitian about nutrition and exercise – ideally before you get pregnant.  Pregnancy is not the time to start an exercise program, Dweck said. Don’t look at the scale Is the number on the scale creeping higher every week despite your best efforts? Don’t fret, said Johnson, who noted that your weight doesn’t matter if you’re making healthy choices, paying attention to portion sizes and exercising. “If women follow that advice, they can save themselves a lot of stress,” she said.Julie Revelant is a freelance writer specializing in parenting, health, food and women's issues and a mom. Learn more about Julie at revelantwriting.com.source : http://www.foxnews.com/health/2013/05/19/how-not-to-gain-too-much-pregnancy-weight/