Could Young Blood Literally Rejuvenate An Aging Brain?

In mice, the answer seems to be yes: Recent studies reveal improvements in memory and brain cell growth in older mice who received blood or plasma from younger mice.

What's the Latest Development?


Recent studies published in Nature Medicine and Science respectively describe what happens when old mice get a shot of youth in the form of blood from younger mice. In one study, Stanford researchers injected plasma from three-month-olds into the bodies of 18-month-olds and discovered that the older mice performed better on memory tests than those of their peers who had not received the plasma. In two other studies, Harvard scientists learned that a factor found in the blood of young mice "encouraged the growth of brain cells in old mice, [restored] their sense of smell, [and] boosted muscle power."

What's the Big Idea?

Setting aside various popular science fiction and horror scenarios for the moment: If these effects can be replicated in humans -- the Stanford team is planning a clinical trial next -- it could lead to new treatments for dementia and other diseases commonly associated with aging. Meanwhile, Dr. Eric Karran of Alzheimer's Research UK says that the findings, "while very interesting, [do] not investigate the type of cognitive impairment that is seen in Alzheimer's disease, which is not an inevitable consequence of aging."

Photo Credit: Shutterstock.com

Read it at BBC News

Why a federal judge ordered White House to restore Jim Acosta's press badge

A federal judge ruled that the Trump administration likely violated the reporter's Fifth Amendment rights when it stripped his press credentials earlier this month.

WASHINGTON, DC - NOVEMBER 16: CNN chief White House correspondent Jim Acosta (R) returns to the White House with CNN Washington bureau chief Sam Feist after Federal judge Timothy J. Kelly ordered the White House to reinstate his press pass November 16, 2018 in Washington, DC. CNN has filed a lawsuit against the White House after Acosta's press pass was revoked after a dispute involving a news conference last week. (Photo by Alex Wong/Getty Images)
Politics & Current Affairs
  • Acosta will be allowed to return to the White House on Friday.
  • The judge described the ruling as narrow, and didn't rule one way or the other on violations of the First Amendment.
  • The case is still open, and the administration may choose to appeal the ruling.
Keep reading Show less

How to split the USA into two countries: Red and Blue

Progressive America would be half as big, but twice as populated as its conservative twin.

Image: Dicken Schrader
Strange Maps
  • America's two political tribes have consolidated into 'red' and 'blue' nations, with seemingly irreconcilable differences.
  • Perhaps the best way to stop the infighting is to go for a divorce and give the two nations a country each
  • Based on the UN's partition plan for Israel/Palestine, this proposal provides territorial contiguity and sea access to both 'red' and 'blue' America
Keep reading Show less

Scientists just voted to change the definition of a kilogram

The definition of a kilogram will now be fixed to Planck's constant, a fundamental part of quantum physics.

Greg L via Wikipedia
Surprising Science
  • The new definition of a kilogram is based on a physical constant in quantum physics.
  • Unlike the current definition of a kilogram, this measurement will never change.
  • Scientists also voted to update the definitions of several other measurements in physics.
Keep reading Show less