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以下文章內容僅供參考,文章中所提到的任何資料會因人而異。


肥胖會得癌症?

台北醫學大學藥學系畢業、三本著作、活力藥師網站長,健康兩點靈、57健康同學會、新聞哇哇哇、幸福照過來、陶子掏心話來賓

看到肥胖會得癌症這個標題,大家一定嚇一跳吧,我也是看到這篇新聞:女重度肥胖,手術防子宮內膜癌。新聞提到美國加州大學聖地牙哥分校團隊發表於《婦科腫瘤學》的研究指出,BMI值大於40的女性,罹患子宮內膜癌的比例是BMI值25女性的8倍;研究人員分析逾740萬名女性的就醫紀錄後發現,若接受「胃繞道」、「袖狀胃切除」、「胃束帶」等減重手術,可降低罹患子宮內膜癌比例逾7成,若患者在手術後能控制飲食及保持運動習慣,罹癌風險更可減少達81%

但是千萬不要隨便相信新聞標題,不然就會犯了某位醫師犯的錯喲。附註:感冒到底應不應該吃藥

我們附上該篇英文報告,看來是真有這麼回事。

Researchers at the University of California, San Diego School of Medicine and Moores Cancer Center report that bariatric surgery resulting in dramatic weight loss in formerly severely obese women reduces the risk of endometrial (uterine) cancer by 71 percent and as much as 81 percent if normal weight is maintained after surgery.

Published in the April issue of Gynecologic Oncology, the official publication of the Society of Gynecologic Oncology, the findings indicate obesity may be a modifiable risk factor for endometrial cancer, and bariatric surgery a viable option for eligible patients. They are based on a retrospective cohort study of 7,431,858 patients in the University HealthSystem Consortium database, which contains information from contributing academic medical centers in the United States and affiliated hospitals. Of this total, 103,797 patients had a history of bariatric surgery and 44,345 had a diagnosis of uterine malignancy.

Obesity is a widespread public health problem in the United States, with an estimated two-thirds of the U.S. adult population considered to be overweight or obese. The condition is strongly linked to a host of health risks, among them heart disease, diabetes and cancer, in particular endometrial cancer.

“Estimating from various studies that looked at increasing BMI and endometrial cancer risk, a woman with a Body Mass Index (BMI) of 40 would have approximately eight times greater risk of endometrial cancer than someone with a BMI of 25,” said first author Kristy Ward, MD, the senior gynecologic oncology fellow in the Department of Reproductive Medicine at UC San Diego School of Medicine. “This risk likely continues to go up as BMI goes up.”

Bariatric surgery is often the last resort for obese patients after all other non-surgical weight loss efforts have failed. To qualify, patients must be an acceptable surgical risk and be defined as either severely obese with a BMI of 40 or greater or have a BMI of 35 or greater with at least one related condition: diabetes, obstructive sleep apnea, obesity-related cardiomyopathy or heart muscle disease or severe joint disease.

Typically, bariatric surgery involves reducing the size of the stomach using a constrictive gastric band, removing a portion of the stomach or resecting and re-routing the small intestines to a small stomach pouch. In all cases, the surgery must be followed by lifestyle changes to ensure long-term weight loss success.

A number of biological mechanisms link obesity to endometrial cancer. Excessive adipose or fat tissue, for example, raises circulating levels of estrogen, which is associated with tumor creation and metastasis. Obesity also causes chronic inflammation, boosting insulin resistance and increased estrogen levels.

“The majority of endometrial cancers are estrogen-driven,” said Ward. “In a normal menstruating woman, two hormones control the endometrium (inner lining of the uterus). Estrogen builds up the endometrium and progesterone stabilizes it. A woman with excess adipose tissue has an increased level of estrogen because the fat tissue converts steroid hormones into a form of estrogen.

“So there is too much estrogen, causing the endometrium to build up, but not enough progesterone to stabilize it. The endometrium continues to grow and can undergo changes into abnormal tissue, leading to cancer.”

Bariatric surgery has been shown to reduce the impact of these factors: hormone levels become normal; inflammation decreases; insulin resistance drops; weight loss allows for increased physical activity and improved overall health.

“The obesity epidemic is a complicated problem,” she said. “Further work is needed to define the role of bariatric surgery in cancer care and prevention, but we know that women with endometrial cancer are more likely to die of cardiovascular causes than they are of endometrial cancer.  It’s clear that patients who are overweight and obese should be counseled about weight loss, and referral to a bariatric program should be considered in patients who meet criteria.”

Co-authors include Angelica M. Roncancio, University of Texas School of Public Health; Nina R. Shah, Mitzie-Ann Davis, Cheryl C. Saenz, Michael T. McHale and Steven C. Plaxe, all of UC San Diego Moores Cancer Center.

台南高雄地區,想要減肥的朋友,可以上網搜尋林黑潮診所

關鍵字: 保健護理
     
  
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專家: 高藥師 | 發表日期: 2014/04/02 10:06
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