Posts

Why Get BRCA Tested

  Why Get BRCA Tested People often get genetic testing to see if they are at risk of developing certain cancers associated with BRCA mutations. This way, they can take steps to try to protect themselves from the increased cancer risk. Breast cancer Breast cancer screening is critical to early detection and diagnosis. However, it's important to start early if you have a BRCA mutation. “We tell women to start their mammograms in their 40s or 50s, but if you knew your breast cancer risk was much higher – as it would be if you had BRCA1 or 2 mutation – you would want to start younger,” Garber says. That’s because your risk of cancer could occur earlier in life. Prophylactic surgery, a procedure that is done to prevent the development of cancer, is another option. A double mastectomy involves the surgical removal of both breasts. In some cases, as much breast tissue as possible is removed, while other cases require a complete removal of the breast, including the nipple. However, it'...

An obsidian hand ax crafted by an ancient human relative more than 1.2 million years ago.

An obsidian hand ax crafted by an ancient human relative more than 1.2 million years ago.   Because it requires skill and knowledge,  stone tool use among early hominins, the group that includes humans and the extinct species more closely related to humans than any other animal, can offer a window into the evolution of the human mind. A key advance in stone tool creation was the emergence of so-called workshops. At these sites, archaeologists can see evidence of hominins methodically and repeatedly crafting stone artifacts. The newly analyzed trove of obsidian tools may be the oldest stone-tool workshop run by hominins on record. "This is very new in human evolution," study first author Margherita Mussi, an archaeologist at the Sapienza University of Rome and director of the Italo-Spanish archeological mission at Melka Kunture and Balchit, a World Heritage site in Ethiopia, told Live Science. In the new study, the researchers investigated a cluster of sites known as Melka Kun...