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It has always been said that sleep is very important for body. In many research papers, insufficient amount of sleep has even been linked to many health problems. Have you ever thought what will be the effect if one does not get to sleep for many hours? Dan Childs, head of the ABC News Medical Unit, has tried knowing it by staying awake for 40 hours.

It has been found that by not taking proper sleep, a number of negative things happen like weakening of immune system, negative effect on cardiovascular system, cognitive function and memory. In fact, it did not take much time to show negative impact.

A yearlong federal investigation into the dietary supplement industry has led to an extensive crackdown on tainted or misleading products sale. On Tuesday, the Justice Department said that criminal and civil enforcement actions have been filed against 117 companies and individuals.

The main focus of the sweep is on USPlabs, a firm based in Dallas for the sale of the best-selling workout supplements Jack3d and OxyElite Pro. The supplements contain the amphetamine-like stimulant dimethylamylamine, or DMAA.

Federal prosecutors on Tuesday brought criminal charges against USPlabs and six of its executives associated with the sale of those products.

Two studies published on Tuesday in The Journal of the American Medical Association have suggested that fewer men have been screened for prostate cancer, and fewer early-stage cases have been detected.

The researchers said the number of cases has fallen not because the disease was becoming less common but because less effort has been put to find it.

The authors of one of the studies wrote that the fall in both screening and incidence ‘ may have major public health implications’, but they mentioned that it was quite early to tell whether the changes would have an impact on death rates from the disease or not.

As per the American Cancer Society, in 2015, nearly 220,800 new prostate cancer cases are likely, along with 27,540 deaths.

First Lady Chirlane McCray said on Tuesday that all new moms at public hospitals in New York City and a major Brooklyn hospital will have to go for screening for maternal depression.

The city’s Health and Hospitals, running 11 hospitals, and Maimonides Medical Center, which together handle a quarter of births in the city, have promised to make the depression checks for pregnant women and new mothers universal in a time span of two years.

At Bellevue Hospital, McCray said, “Despite great benefit it provides, screening for post-partum depression has not been part of woman’s routine care. Asking for help during what is considered to be one of most joyous periods in a parent’s life can be difficult. It can be daunting”.

Mars mission holds great importance not only for NASA but for the entire world. Now an important question that arises is where the first group of astronauts on Mars should land. There are many factors that should be present for areas to be selected for the first-ever outpost on the Martian land.

As per experts, the ideal site would be the one having high scientific value so that researchers are able to explore the planet and look out for the signs of life there. The site should be the one, which has sufficient amount of resources to help sustain expeditionary crews.

A tooth was excavated from a remote Russian cave in 2010. After carrying out an extensive analysis, study researchers have come to know amazing findings about a group of long-lost human relatives called Denisovans.

DNA analysis was done of the tooth discovered from the Denisova cave in Siberia’s Altai Mountains. From the assessment, it has been found that Denisovans were present much earlier than thought before.

Study researchers said that a piece of Denisovan finger bone and one more tooth were also found from the cave but in different years, 2010 and 2000, and both of them date between 50,000 and 70,000 years ago.