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Need to sleep not too hard

06.04.2004

Although it is believed that with osteochondrosis it is better to sleep on bare boards, an experiment conducted at the University of Barcelona (Spain) showed that medium firm mattresses are preferable to people with chronic back pain than hard ones.

In the experiment, 158 subjects with a long history of low back pain slept on firm mattresses, while 155 slept on medium firm mattresses. They themselves assessed the degree of pain on a 10-point scale.

After three months, it turned out that those who slept on moderately hard mattresses had less back pain throughout the day and were less likely to take sick leave for lower back pain.

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Reverse contraceptive 19.01.2016

One day, German carpenter Clemens Bimek saw a TV show about human anatomy that led him to the idea of a radically new solution to the problem of male contraception. In 2000, he brought his development to patenting, and in 2009 he implanted (with the help of a surgeon, of course) this test device for himself.

The system, called Bimek SLV, uses two shutoff valves that are implanted in the musculoskeletal organ sac. Each valve is made from non-magnetic metal components and a biocompatible polymer used in medical implants. The valves attach to the paired vas deferens and cut into each canal. After implantation, the process of opening and closing the valve occurs by pressing a switch through the skin.

With the valve closed, the spermatozoa are diverted away from the duct and ejected into the surrounding tissue, where they should in theory be absorbed. In order to prevent accidental opening of the valve and, accordingly, an unexpected release of liquid, a safety device is provided in the device, which must be kept pressed to open the valve.

The operation on the inventor was performed under local anesthesia, and he could observe the process. All the past six years since implantation, the device has been working perfectly, and the spermiogram shows that his native ejaculate does not contain spermatozoa. When the rumor about the device spread among the masses, 200 men turned to the inventor, ready to participate in the experiments. Bimek is now working with doctors to prepare the device for clinical trials that are due to begin this year with 25 volunteers.

However, many urologists have raised concerns about the safety of the device. Some suggest a rejection reaction, despite the fact that the materials used in the device have long been used in implants. Others say that scar tissue can form at the junctions of the channels with the device, which will prevent the movement of the ejaculate. And the liquid itself can thicken and become inactive if the valves are kept closed for a long time.

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