A Key Detail in Your Retina Could Indicate How Healthy Your Brain Is

New research suggests that the thinning of a person's retina – the light-sensitive tissue that lines the back of the eye – in middle age is linked to cognitive performance in their early and adult life. 

While much more research is needed, the team behind this new study says the findings might one day pave the way towards a simple eye test that could help predict a person's risk for conditions such as Alzheimer's disease, the most common form of dementia.

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Study of LSD microdosing doesn't show a therapeutic effect

Proponents of LSD "microdosing"—taking small amounts of the drug at regular intervals—claim it can improve mood and cognitive function. But new research by the University of Chicago has not found evidence to support those claims.

Harriet de Wit, Ph.D., Professor of Psychiatry and Behavioral Neuroscience at UChicago, noted that the study doesn't disprove microdosing's possible benefits, and that more investigation is needed. The study does show that taking small doses of LSD is safe. De Wit said the findings point to the important role scientists can play in testing the therapeutic claims made about recreational drugs.

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⁣US man who got 1st pig heart transplant dies after 2 months

David bennett, 57, died tuesday at the university of maryland medical center. doctors didn’t give an exact cause of death, saying only that his condition had begun deteriorating several days earlier.

Bennett’s son praised the hospital for offering the last-ditch experiment, saying the family hoped it would help further efforts to end the organ shortage.

Doctors for decades have sought to one day use animal organs for life-saving transplants. Bennett, a handyman from Hagerstown, Maryland, was a candidate for this newest attempt only because he otherwise faced certain death — ineligible for a human heart transplant, bedridden and on life support, and out of other options.

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