Trump’s Attacks on Biden Stem from His Fear of Contracting Alzheimer’s

“Trump’s long fixation on mental fitness followed years of watching his father’s worsening dementia — a formative period that some associates said has been a defining and little-mentioned factor in his life, and which left him with an abiding concern that he might someday inherit the condition. While much remains unknown about Alzheimer’s, experts say there is an increased risk of inheriting a gene associated with the disease from a parent.”

Washington Post