As late as Monday night, Armstrong's bio on the social media site included a mention of his seven Tour wins from 1999-2005, but reference to the race was removed hours after he was stripped of the titles by the International Cycling Union and banned from the sport for life for his involvement in what the U.S. Anti-Doping Agency described as a massive doping program.
Early Tuesday, Armstrong's profile said: "Raising my five kids. Fighting Cancer. Swim, bike, run and golf whenever I can." Previously, the profile said: "Father of 5 amazing kids, 7-time Tour de France winner, full time cancer fighter, part time triathlete."
The Twitter change was the only immediate reaction from Armstrong to the UCI's decision to take away his titles.
Armstrong has been a prolific user of Twitter and has nearly 3,800,000 followers on his page. His most recent tweet was on Oct. 17 when he announced he would stand down as chairman of the Livestrong cancer charity that he founded.
Armstrong has steadfastly denied doping, but chose not to fight USADA in one of the agency's arbitration hearings, arguing the process was rigged against him.
On Monday, the UCI emphatically threw its support behind the USADA, ending a saga that brought down the most decorated rider in Tour history and exposed widespread cheating in professional cycling.
"Lance Armstrong has no place in cycling, and he deserves to be forgotten in cycling," said Pat McQuaid, president of the governing body. "Make no mistake, it's a catastrophe for him, and he has to face up to that."
The Tour de France organizers will not appoint new winners for Armstrong's former titles, leaving a seven-year gap on the honour roll of the sport's biggest event.