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It may be astonishing for many to know, but it is true that elephants have smaller sperm than mice. Since their discovery of almost 350 years ago, sperms have been found to be the most diverse cells when it comes to their size and shape.

It was quite strange to know the differences in size of sperms in animals when they have to perform the same thing, which is to fertilize a female's egg. It is being said that sperm competition has an important role to play in sperm evolution.

The competition takes place when many males have to mate with the same female and their sperm competes to fertilize the limited eggs of female. As per study researchers, longer sperm has been considered to have an edge.

Seeing the devastating effect dementia is having on people, a new institute has been opened that will help developing nations to understand more about the disease. It will also lessen the burden on patients, families and caregivers.

UC San Francisco and the University of Dublin have launched the Global Brain Health Institute that will be in San Francisco as well as in Dublin. The institute will also aim to reduce cases of dementia all over the world. As many as 600 experts from different fields will receive training in a period of over 15 years. Training will start from next fall.

Almost half of all children in America suffer from at least one episode of cold and other routine illnesses before they get six years old. Also, one-third of preschoolers have had a wheezing cold in the last six months. Now, a new research has unveiled that children suffering respiratory tract infections can benefit from azithromycin.

The research published in the Journal of the American Medical Association has unveiled that the team decided to use a strong dose of azithromycin on children prone to regular wheeze when they found that the drug can prevent cold from getting worse.

Finally the Centers for Medicare & Medicaid Services (CMS) has locked its rules for the Comprehensive Care for Joint Replacement Program (CCJR). The CMS has made certain important changes in the program.

The changes have been introduced and one of the most important one is that the start date of the CCJR has been shifted from January 1, 2016, to April 1, 2016. But it shall, however, be noted that one rule remains the same that the five-year demonstration covers is active for almost all the hospital in the region.

One of the other changes involves reduction in the number of regions where the program will be applicable. Now the number of regions has been reduced from 75 to 67. Some regions have been spared because there had very less joint replacement cases.

The Food and Drug Administration (FDA) has given green signal to Narcan nasal spray. The spray, which has received approval today, is nasal spray version of naloxone hydrochloride, a medication to stop or reverse the effects of an opioid overdose.

It is the first spray version of naloxone hydrochloride that has the approval of the FDA. Stephen Ostroff, MD, acting commissioner, Food and Drug Administration, said that it has become quite important for them to crackdown the opioid overuse.

“We cannot stand by while Americans are dying. While naloxone will not solve the underlying problems of the opioid epidemic, we are speeding to review new formulations that will ultimately save lives that might otherwise be lost to drug addiction and overdose”, said Ostroff.

According to estimations, three most common kinds of Sexually Transmitted Diseases have been sweeping the United States as the number of cases has spiked record high since 2006. As per a report by the Centers for Disease Control and Prevention, the 2014 data has suggested that over 1.4 million Chlamydia cases were reported.

Syphilis and gonorrhea cases were not far behind with an overwhelming rise of cases of to about 20,000 and over 350,000, respectively. Most of the cases were seen in younger people belonging to the age group of 15 to 24 years.

Chlamydia is a widespread and curable STD caused by Chlamydia trachomatis. It occurs more in women. It has been in fact estimated that around 1 out of 20 sexually active women from the age group 14 to 24 years suffer from the infection.