How Might Carbonation Contribute to Obesity?

Carbonation makes drinks seem less sweet than they really are, and could increase consumption of sugar and food, neuroscientists report in the September issue of Gastroenterology. It might be therefore be best for weight-loss plans to avoid carbonated beverages. Addition of carbon dioxide (CO2) to water (carbonation) makes it effervescent

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Which Patients With Barrett’s Esophagus Will Develop Esophageal Cancer?

Researchers have found markers to identify patients with Barrett’s esophagus (BE) at greatest risk of developing esophageal adenocarcinoma. These are described in the August issue of Clinical Gastroenterology and Hepatology. In patients with BE, part of the normal stratified squamous epithelium of the lower esophagus is replaced with metaplastic columnar

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Molecular Mechanisms of Roux-en-Y Gastric Bypass

Many of the beneficial effects of Roux-en-Y gastric bypass (RYGB), including improved glucose homeostasis, require the actions of melanocortin-4 receptors (MC4Rs) on autonomic neurons, according to the March issue of Gastroenterology. Fasting glycemia often improves within days of RYGB (see below figure), which produces greater improvements in glucose homeostasis than

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How Common is Portal Hypertension in Patients With NAFLD?

Patients with nonalcoholic fatty liver disease (NAFLD) are at risk for portal hypertension and esophageal varices, according to the September issue of Clinical Gastroenterology and Hepatology. The study also shows that factors such as advanced liver disease, type 2 diabetes, and obesity can be used to identify patients most likely

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Does Menopause Affect Outcomes from Roux-en-Y Gastric Bypass Surgery?

Estradiol increases body weight loss and satiation effects of Roux-en-Y gastric bypass (RYGB) in ovariectomized rats, according to the August issue of Gastroenterology. Approximately ~85% of bariatric surgery procedures are performed on women, but little is known about the effects of menopause or reproductive hormones, such as estrogen, on outcomes.

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Does the Western Diet Promote Endotoxemia and Inflammation?

A high-fat diet can cause endotoxemia, which promotes the systemic inflammation and metabolic disorders associated with obesity, according to a human study published in the May issue of Gastroenterology. Chronic endotoxemia (the presence of endotoxins such as lipopolysaccharide in blood) occurs with obesity, yet little is known about the source

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What Causes Weight Gain After Gastric Bypass?

A surgical complication, rather than eating habits, can cause patients to regain lost weight after gastric bypass surgery, reports Barham K. Abu Dayyeh et al. in the March issue of Clinical Gastroenterology and Hepatology. The authors correlated increased diameter of the gastrojejunal stoma with long-term weight gain after this common

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