Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:
Weight Watchers Launches New Program, With Oprah On Board
A new program called "Beyond the Scale" was announced Monday by Weight Watchers, with a familiar face -- Oprah Winfrey -- playing a key role.
The updated approach is meant to help clients change their mindset, Lisa Straub, a Weight Watchers leader, told ABC News.
"People would really spend a lot of time trying to figure out, 'How do I get my Doritos in? Oh, I can do it if I kind of adjust this and adjust that,' " Straub said of the previous program. "Now it's not as important for them to make sure how they're getting their Doritos in."
With the new program it's "much more important for them to say, 'What am I putting in my body?' " she told ABC News.
Winfrey, 61, recently acquired a 10 percent stake in Weight Watchers and is now on its board. In an essay she penned for her magzine O, Winfrey said she supports the new approach.
"I've wishy-washed with diets and exercise my whole life. Now I'm ready to go beyond the scale and declare a new way of being in the world," Winfrey wrote. "The folks at Weight Watchers called me in July and asked if I'd join their team and help spread the message about taking a holistic approach to health and fitness."
Penis Transplants Approved for Wounded American Soldiers
Approval has been given for penis transplants on dozens of American soldiers who suffered genital injuries from bomb blasts in Afghanistan.
Johns Hopkins University granted permission to surgeons in the School of Medicine to perform the experimental procedure on 60 patients, The New York Times reported.
This type of transplant has never been performed in the United States. The Hopkins team plans to perform their first one within a year, perhaps in just a few months.
The organ will come from a deceased donor and the doctors said it should start working within a few months. Along with normal urinary function and sensation, the men should also regain sexual function over time, The Times reported.
So far, only two penis transplants are known to have been attempted worldwide. The first one by Chinese doctors in 2006 failed, but there was a successful one in South Africa last year. Like other major transplants, risks include bleeding, infection and the risk that drugs used to prevent transplant rejection will increase a patient's risk of cancer.
Patients should be realistic and not "think they can regain it all," Dr. W. P. Andrew Lee, chair of plastic and reconstructive surgery at Johns Hopkins, told The Times.
However, he noted that some patients hope to father children and "that is a realistic goal."
The Hopkins surgeons will transplant only the penis, not the testes, where sperm are produced. That means that if a transplant recipient with intact testes fathers a child, it will be from his sperm, not that of the penis donor, The Times reported.
Men who have lost their testes may still be able to have penis transplants, but would not be able to have genetically-related children.
Between 2001 and 2013, 1,367 American military personnel suffered genital wounds while serving in Afghanistan or Iraq, according to the Department of Defence Trauma Registry. Nearly all were injured by improvised explosive devices.
"These genitourinary injuries are not things we hear about or read about very often," Lee told The Times. "I think one would agree it is as devastating as anything that our wounded warriors suffer, for a young man to come home in his early 20s with the pelvic area completely destroyed."
Some experts criticize penis transplants because they are not necessary to save a man's life, but when "you meet these people, you see how important it is," Dr. Richard Redett, director of pediatric plastic and reconstructive surgery at Johns Hopkins, told The Times.
"To be missing the penis and parts of the scrotum is devastating," he noted. "That part of the body is so strongly associated with your sense of self and identify as a male. These guys have given everything they have."
First Generic Version of Gleevec Approved by FDA
The first generic version of the cancer drug Gleevec (imatinib mesylate) has been approved by the U.S. Food and Drug Administration.
The agency approved 100-milligram and 400-milligram pills of the generic version to treat chronic myeloid leukemia. The once-a-day pills are made by Sun Pharmaceutical Industries Ltd. of India, which said U.S. sales of the pills will begin Feb. 1, 2016, the Associated Press reported.
The FDA gave Sun exclusive rights to sell generic Gleevec for six months. If the FDA approves other drug companies' generic versions, there should be a significant drop in the cost.
Gleevec -- sold by Novartis -- costs about $10,000 a month for the 400-milligram daily dosage. Novartis is trying to limit the number of U.S. patients who start using the generic version by offering patients with private insurance discount cards that cap their monthly co-payment at $10, with the drug company paying up to $30,000 a year of the pharmacy tab. Insurers would have to cover the rest of the bill, the AP reported.
Patients who pay cash or those with government coverage are not eligible.