Monthly Archives: August 2013

5 Things You Didn’t Know About

Circumcision

newborn baby boy wrapped in blanketA few factsA 2012 policy statement from the American Academy of Pediatrics (AAP) is likely to throw fuel on the fiery controversy surrounding male infant circumcision.The AAP’s statement touts the medical benefits of circumcision while stopping short of recommending the procedure, which opponents decry as painful and unnecessary. For instance, new research has found that circumcision lowers the risk of acquiring sexually transmitted infections, including HIV, genital herpes, human papillomavirus and syphilis.Circumcision seems to be on the decline in the United States (a 2005 Agency for Healthcare Research and Quality study put the rate at about 56 percent), but the practice has long religious and cultural roots. Here are five circumcision facts that may come as a surprise.

In the late 1800s, doctors turned to circumcision to “cure” an array of ailments, from childhood fevers to brass poisoning to paralysis. This era was a boom time for genital surgery — women were losing their ovaries to the knife in the name of curing hysteria — but it was an 1870 case that shone the spotlight on circumcision.

Writing in the journal Transactions of the American Medical Association, Lewis Sayre, a professor of orthopedic surgery at Bellevue Hospital Medical College, told the tale of being called to the bedside of a 5-year-old boy whose knees were flexed and paralyzed, preventing him from walking.

During his examination, Sayre discovered that the boy’s foreskin had contracted, causing the child great pain. Speculating that the foreskin problem could be the source of the boy’s “physical prostration and nervous exhaustion,” Sayre conducted a circumcision the next day. In less than two weeks, Sayre reported, the boy was walking again.

Whatever the cause of the boy’s paralysis and miraculous cure, the foreskin can occasionally become trapped over the head of the penis, a condition called phimosis. Modern cures include circumcision, manual stretching of the foreskin, or preputioplasty, an operation to widen the foreskin. [Macho Man: 10 Wild Facts About His Body]

The foreskin is more complex than you might think

Credit: Eye photo via Shutterstock

 

The foreskin isn’t just skin. Think of it as more like an eyelid for male genitals. On the inside, the foreskin is made up of mucous membrane, analogous to the inside of the eyelid or the inside of the mouth. It’s this moist environment that seems to be responsible for the foreskin’s association with sexually transmitted infections. The foreskin also contains a large number of Langerhans cells, a type of immune cell targeted by HIV infection.

Women have a foreskin equivalent, too: the clitoral hood, which protects the clitoris much as the foreskin covers the glans. The foreskin and the clitoral hood, known in gender-neutral terms as the prepuce, evolve from the same tissue in the womb. [10 Odd Facts About the Female Body]

The first-recorded circumcision happened in Egypt

Credit: Photo Credit: Dreamstime

 

As far as we know from the historical record, the land of the pharaohs pioneered circumcision. The earliest reference to the procedure dates back to around 2400 B.C. A bas-relief in the ancient burial ground ofSaqqara depicts a series of medical scenes, including a flint-knife circumcision and a surgeon explaining, “The ointment is to make it acceptable,” likely referring to some form of topical anaseptic.

Ancient Egyptian circumcisions were not done in infancy, but instead marked the transition from boyhood to adulthood. The Greeks saw their Mediterranean neighbors’ tradition as rather bizarre. In the fifth century, Herodotus made his opinion known in his work “The History of Herodotus.”

“They practice circumcision for the sake of cleanliness,” he wrote of the Egyptians, “considering it better to be cleanly than comely.”

It may have caught on as a status symbol

Credit: Hospital photo via Shutterstock

 

An increase in hospital births and a perception of circumcision as promoting cleanliness certainly contributed to the rise of the procedure in the United States. But the procedure may have been a status symbol as well.

 

Writing in the University of Cincinnati Law Review in 2003, Seton Hall University law professor Sarah Waldeck points out that Sayre and his circumcision-promoting colleagues came onto the scene just as hospital births were becoming more common. The wealthy were more likely to go to the hospital and have a physician-attended birth; thus, circumcision became a marker of class. The need to circumcise essentially became a social norm, Waldeck writes. It was what “good” parents chose. As more and more parents made the choice, it became odder and odder not to, which then put more pressure on parents tochoose circumcision so their child would be “normal.”

Circumcisions leave unique marks

Credit: Vanessa Van Rensburg | Dreamstime

 

Most circumcisions in the United States are done with one of three devices: the Mogen Clamp, the Plastibell and the Gomco clamp. The Mogen clamp is a scissorlike device consisting of two flat blades used that are clamped over the foreskin, cutting off blood flow. A scalpel is then used to slice away the tip of the foreskin.

The Plastibell is a plastic device that is placed over the head of the penis, under the foreskin. The doctor or nurse then ties a string around the foreskin, cutting off circulation. The string may be used as a guide for the surgical removal of the foreskin, or the Plastibell may be left on for a week or so, after which the dead foreskin will fall off on its own.

 

The Gomco clamp is also inserted between the head of the penis and the foreskin. Again, the surgeon clamps the device over the foreskin, cutting off circulation. After about five minutes, the blood around the clamp will begin to clot, and the surgeon uses a scalpel to cut away the foreskin. This method sometimes leaves a distinctive light brown scar on the head of the penis.

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Should one eat before or after a workout and does it change if you are lifting weights or running?

Reader Question • 483 votes

A

Twenty years ago, when I was misspending my youth training for 10K races and the occasional marathon, runners and other endurance athletes were strongly advised to avoid eating in the hour or so before exercise.

We were told that pre-exercise calories would lead to a quick increase in blood sugar — a sugar high — followed by an equally speedy blood-sugar trough, known as “rebound hypoglycemia,” which would arrive in the middle of our race or workout and wreck performance. This idea grew out of decades-old studies showing that blood-sugar levels and performance tended to decline if athletes ate or drank sugary foods or drinks just before exercise.

But newer experiments have found that, while rebound hypoglycemia can occur, it is rare and doesn’t usually affect performance. When, for instance, a group of British cyclists gulped sugary drinks before a workout, a few of them experienced low blood sugar in the first few minutes of a subsequent, exhausting 20-minute ride, but their blood sugar levels then stabilized and they completed the ride without problems. Other studies have found that eating easily digestible carbohydrates in the hour before exercise generally enables athletes to work out longer.

As for after a workout, by all means, indulge — provided your session has lasted for at least 45 minutes or longer. (If it’s shorter than that, you will likely ingest more calories than you have burned.)

Both runners and those lifting weights vigorously should ingest carbohydrate-rich foods or drinks within an hour after a workout, said John L. Ivy, a professor of kinesiology at the University of Texas at Austin who has long studied sports nutrition. During that time, muscles are “primed” to slurp blood sugar out of the bloodstream, he said, replenishing lost fuel stores. If the food or drink also includes protein, the muscle priming is prolonged, Dr. Ivy has found, meaning you can store more fuel and be better prepared for your next workout. Protein also aids in rebuilding muscle fibers frayed during the workout, he said.

There is little evidence, however, that weight trainers need more protein after exercise than runners or other endurance athletes. “Protein supplements are often used” by weight trainers after exercise, according to the latest edition of Sport Nutrition, the definitive textbook on the subject, “but they are not necessary.”

Chocolate milk, on the other hand, is, at least at my training table. Inmultiple recent studiesvolunteers who drank chocolate milk within an hour after working out had higher muscle fuel stores, less body fat and a greater, overall physiological response to exercise than those who recovered with water or a sports drink.

At Lynn University, No Textbooks — All Students Get iPad Minis

Categories: Technology

 

ipad_mini_lynn.jpg
Photo by Mike Licht/NotionsCapital.com via Flickr CC

Lynn University projects that about 600 students will start school there next week — the largest incoming class since 2007.

 

And every one of those kids will have iPad Minis, which they have to buy for $475.

They will not use textbooks this year.

Lynn calls this move “one of the most extensive tablet-based learning efforts in all of American higher education.”

Lynn says the move saves students “hundreds of dollars” on books.

The core curriculum will be provided on “e-readers enhanced with custom multimedia content,” and the machines will come with “at least 30 education, productivity, social and news-related iOS apps — some free and some paid for by the university.”

Inside Higher Education reported that other universities have experimented with iPad use — mostly just in certain departments, not the whole school — but Lynn is different in that its custom curriculum is part of the package.

As for worries that students will just play Candy Crush instead of taking notes for biology lab, faculty say that kids already do that with their phones — so the school is trying to take advantage of that.

There will be an iPad distribution session on Sunday.

Lynn has something of a reputation as a school for rich white kids who couldn’t get in other places (tuition is $32K a year, and there’s a 63 percent acceptance rate), but with FAU embarrassing itself left and right all year long, Lynn might just be the cool kid on the South Florida campus now. Students who go there seem to like it all right, and in addition to the iPads, it hosted a presidential debate last year. (Because hosting required the school to upgrade its wireless network, the school was well-positioned to launch the e-learning initiative.)

I dunno, Lynn… Do you have any fraternities? (It does!)