Eating disorder behaviors and weight concerns are common in women over 50

ScienceDaily (June 21, 2012) — Eating disorders are commonly seen as an issue faced by teenagers and young women, but a new study reveals that age is no barrier to disordered eating. In women aged 50 and over, 3.5% report binge eating, nearly 8% report purging, and more than 70% are trying to lose weight. The study published in the International Journal of Eating Disorders revealed that 62% of women claimed that their weight or shape negatively impacted on their life.

See Also:Health & MedicineDiet and Weight LossMenopauseObesityMind & BrainEating DisordersGender DifferenceDieting and Weight ControlLiving WellReferenceEating disorderBulimia nervosaMenopauseOverweight

The researchers, led by Dr Cynthia Bulik, Director of the University of North Carolina Eating Disorders Program, reached 1,849 women from across the USA participating in the Gender and Body Image Study (GABI) with a survey titled, 'Body Image in Women 50 and Over -- Tell Us What You Think and Feel.'

"We know very little about how women aged 50 and above feel about their bodies," said Bulik. "An unfortunate assumption is that they 'grow out of' body dissatisfaction and eating disorders, but no one has really bothered to ask. Since most research focuses on younger women, our goal was to capture the concerns of women in this age range to inform future research and service planning."

The average age of the participants was 59, while 92% were white. More than a quarter, 27%, were obese, 29% were overweight, 42% were normal weight and 2% were underweight.

Results revealed that eating disorder symptoms were common. About 8% of women reported purging in the last five years and 3.5% reported binge eating in the last month. These behaviors were most prevalent in women in their early 50s, but also occurred in women over 75.

When it came to weight issues, 36% of the women reported spending at least half their time in the last five years dieting, 41% checked their body daily and 40% weighed themselves a couple of times a week or more.

62% of women claimed that their weight or shape negatively impacted their life, 79% said that it affected their self-perception and 64% said that they thought about it daily.

The women reported resorting to a variety of unhealthy methods to change their body, including diet pills (7.5%), excessive exercise (7%), diuretics (2.5%), laxatives (2%) and vomiting (1%).

Two-thirds, 66%, were unhappy with their overall appearance and this was highest when it came to their stomach, 84%, and shape, 73%.

"The bottom line is that eating disorders and weight and shape concerns don't discriminate on the basis of age," concluded Bulik. "Healthcare providers should remain alert for eating disorder symptoms and weight and shape concerns that may adversely influence women's physical and psychological wellbeing as they mature."

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Binge eating may lead to addiction-like behaviors

ScienceDaily (Apr. 24, 2012) — A history of binge eating -- consuming large amounts of food in a short period of time -- may make an individual more likely to show other addiction-like behaviors, including substance abuse, according to Penn State College of Medicine researchers. In the short term, this finding may shed light on the factors that promote substance abuse, addiction, and relapse. In the long term, may help clinicians treat individuals suffering from this devastating disease.

See Also:Health & MedicineControlled SubstancesNutritionDiet and Weight LossMind & BrainAddictionCocaineNutrition ResearchLiving WellReferenceSubstance abuseBulimia nervosaDrug addictionDetox

"Drug addiction persists as a major problem in the United States," said Patricia Sue Grigson, Ph.D., professor, Department of Neural and Behavioral Sciences. "Likewise, excessive food intake, like binge eating, has become problematic. Substance-abuse and binge eating are both characterized by a loss of control over consumption. Given the common characteristics of these two types of disorders, it is not surprising that the co-occurrence of eating disorders and substance abuse disorders is high. It is unknown, however, whether loss of control in one disorder predisposes an individual to loss of control in another."

Grigson and her colleagues found a link between bingeing on fat and the development of cocaine-seeking and -taking behaviors in rats, suggesting that conditions promoting excessive behavior toward one substance can increase the probability of excessive behavior toward another. They report their results in Behavioral Neuroscience.

The researchers used rats to test whether a history of binge eating on fat would augment addiction-like behavior toward cocaine by giving four groups of rats four different diets: normal rat chow; continuous ad lib access to an optional source of dietary fat; one hour of access to optional dietary fat daily; and one hour of access to dietary fat on Mondays, Wednesdays, and Fridays. All four groups also had unrestricted access to nutritionally complete chow and water. The researchers then assessed the cocaine-seeking and -taking behaviors.

"Fat bingeing behaviors developed in the rats with access to dietary fat on Mondays, Wednesdays, and Fridays -- the group with the most restricted access to the optional fat," Grigson said.

This group tended to take more cocaine late in training, continued to try to get cocaine when signaled it was not available, and worked harder for cocaine as work requirements increased.

"While the underlying mechanisms are not known, one point is clear from behavioral data: A history of bingeing on fat changed the brain, physiology, or both in a manner that made these rats more likely to seek and take a drug when tested more than a month later," Grigson said. "We must identify these predisposing neurophysiological changes."

While the consumption of fat in and of itself did not increase the likelihood of subsequent addiction-like behavior for cocaine, the irregular binge-type manner in which the fat was eaten proved critical. Rats that had continuous access to fat consumed more fat than any other group, but were three times less likely to exhibit addiction-like behavior for cocaine than the group with access only on Mondays, Wednesdays and Fridays.

"Indeed, while about 20 percent of those rats and humans exposed to cocaine will develop addiction-like behavior for the drug under normal circumstances, in our study, the probability of addiction to cocaine increased to approximately 50 (percent) for subjects with a history of having binged on fat," Grigson said.

Future studies will look more closely at how bingeing can lead to addiction-like behaviors -- whether bingeing on sugar or a mixture of sugar and fat also promotes cocaine or heroin addiction, for example, and whether bingeing on a drug, in turn, increases the likelihood of bingeing on fat.

To hear Grigson discuss her findings in more detail on the 'Sound Research' podcast, go to http://goo.gl/zdwP5 online.

Other researchers are Matthew D. Puhl, Angie M. Cason, Department of Neural and Behavioral Sciences, Penn State College of Medicine; Rebecca L. Corwin and Francis H.E. Wojnicki, Department of Nutritional Sciences, Penn State.

The National Institute on Drug Abuse funded this research.

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