Visceral pain is often described as generalized aching or squeezing. It is caused by compression in and around the organs, or by stretching of the abdominal cavity. Sometimes visceral pain may radiate to other areas in the body, making it even harder to pinpoint its exact location.
Data from the largest analysis to date of amyloid plaques showed they can appear 20 or 30 years before dementia symptoms.
Investigators at Harvard University also contributed to the study. The research, conducted in mice and in human brain tissue, may help to explain the failures in recent years of large-scale clinical trials attempting to slow the progression of Alzheimerâs by pharmacologically ridding the brain of amyloid plaques.