Intermittent fasting, and fasting in general, has been a popular fad health gimmick, but the science isn't on its side. Instead, proponents believe mice are little people so if mice weaned on starvation diets lived longer, people would also.
Sperm quality can be reduced by several lifestyle factors, like obesity and related diseases such as type 2 diabetes, but a new examination of epigenetic phenomena - gene expression changing even if the DNA sequence is not changed - finds that even diet can impact sperm quality, and in just two weeks.The concern is that such epigenetic changes might be able to lead to properties being transferred from a parent to offspring via the sperm or the egg.
Any time is a good time to start exercising but a great time to start exercising is today. Share this article on Facebook first, though. Don't be intimidated by those people who hiss about Crossfit or their Peloton, a new study shows you have the same ability to build muscle mass as highly trained master athletes of a similar age.
Navan Fort, the legendary capital of Ulster. has long been considered a site of ritual gatherings. Excavations have uncovered a huge 40-yard diameter building and a barbary ape cranium, likely from at least as far as Iberiam along with remnants of pigs, cattle and sheepfrom across Ireland, perhaps being reared as far afield as Galway, Donegal, Down, Tyrone and Antrim. That means Iron Age communities were very mobile at holiday time, their own version of driving for Christmas.
Light propagation usually goes both ways; it is reciprocal in that the trajectory of light traveling one direction is identical in the opposite direction. Isolators and circulators, which make light propagate only in one direction, are vital building blocks in many modern laser and communication systems, but are almost exclusively based on the magneto-optic effect, making devices bulky and difficult for integration. A magnetic-free route would be a great breakthrough for many optical applications.
The CDC has updated its fatality and illness list due to illicit marijuana vaping. Now there have been 54 deaths and 2,506 hospitalizations. The culprit is Vitamin E acetate, needed to make marijuana tetrahydrocannabinol (THC)products into a vapor because, unlike nicotine, it does not dilute readily.
You may be aware that film runs at 25 frames per second because humans will then not see it as individual images. These 'blinks per second' are measured in Hertz and some humans can see up to 60 Hz.You may not sleep well if you have a light blinking all night. And a new study shows that in bird care, light control is even more important than realized.A new study has found that birds of prey have much greater visual acuity but a peregrine falcon is over twice as adept as humans - 129 Hz, which would be like being able to see the details of a race car driver's face as they zoom by you at 200 miles per hour.
Merck has received approval for Ervebo, the first F
vaccine for the prevention of Ebola virus disease (EVD), caused by Zaire ebolavirus in individuals 18 years of age and older.
Cases of EVD are very rare in the U.S., only acquired by individuals in other countries who then traveled to the U.S., or health care workers who became ill after treating patients with EVD.
“While the risk of Ebola virus disease in the U.S. remains low, the U.S. government remains deeply committed to fighting devastating Ebola outbreaks in Africa, including the current outbreak in the Democratic Republic of the Congo,” said Anna Abram, FDA Deputy Commissioner for Policy, Legislation, and International Affairs.
Scientists have discovered remnants of the world's oldest fossil forest in of all places, a sandstone quarry in Cairo, New York.
It is believed the extensive network of trees is around 386 million years old and spread into Pennsylvania and beyond.
The Trump administration has issued a notice of proposed rulemaking (NPRM) that would allow for the importation of certain prescription drugs from Canada. In addition, the Administration is announcing the availability of a new draft guidance for industry that describes procedures drug manufacturers can follow to facilitate importation of prescription drugs, including biological products, that are FDA-approved, manufactured abroad, authorized for sale in any foreign country, and originally intended for sale in that foreign country.
Mitochondria, the energy factories in most of our cells that convert the fat, carbohydrates, and protein we eat into a common energy currency used by our bodies, also set off molecular alarms when cells are exposed to stress or chemicals that can damage DNA, such as chemotherapy, according to a new study in Nature Metabolism. This basic research could one day lead to applied science, like cancer treatments that prevent tumors from becoming resistant to chemotherapy.
In March of 1869, the chemist Dmitri Ivanovich Mendeleev made a presentation to the Russian Chemical Society and outlined patterns in elements that led him to postulate his periodic table of the existing 63 elements. Since a new one was being discovered about once per year, he also made sure to leave room for additions and even hypothesized a few more.Chemistry was the future, understanding elements was key, he and others believed, and they turned out to be right. If you are reading this article on a cell phone, notes New York University, you're holding at least 30 different naturally-occurring elements, including lithium.
Blocking a key regulator of the immune system helps unleash the body's natural defenses against several forms of cancer, a discovery which opened up a new era of cancer immunotherapy. Now researchers have flipped this script and found that, when impaired, a molecularly similar regulator can cause the damaging immune system attacks on skin and organs that are the hallmark of the autoimmune disease lupus. Though still just in the exploratory stage, mice are not little people so this does not translate to humans, the work suggests a way to restore function of this inhibitor which could one day provide new therapy to treat the disease.
