The spokesman for Barbara Bush announced Sunday the former first lady has decided to end medical treatment for a life-threatening illness.

Related: Family releases statement on Barbara Bush's 'failing health'

Family, friends, politicians and admirers of Mrs. Bush reacted to the news on social media.

Photos: First Lady Barbara Bush through the years

Photos: Wedding of George H.W. Bush, Barbara Bush

Photos: Bush family photos throughout the years

Photos: Holidays at the Bush White House

Photos: The Bushes in recent years