Although we now know that low levels of vitamin D are associated with cognitive impairment, we do not know if high or optimum levels will
lessen cognitive losses.
The trial mainly tested the safety of the drug in people, and so the final word on whether aducanumab works to ameliorate the memory and
cognitive losses associated with Alzheimer's will have to wait until the completion of two larger phase III trials.
With traumatic brain injuries, a person can sustain blindness, cognitive function loss, coma,
permanent cognitive loss, horrible headaches, concussion syndrome, double vision, or paralysis on one side of the body as a result of a stroke.
And whereas some psychologists find that high scores on certain cognitive tests correlate in older people with the ability to keep their spirits up, other researchers hypothesize that happiness in later life is an effect
of cognitive losses — which force older people to concentrate on simpler, happier thoughts.
Blood flow is about 15 percent higher in the female brain, which offsets
the cognitive losses of aging, and women's nerve cells are also more tightly packed together, which suggests that the neurons may function more efficiently.