Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – After denying the allegations for years, cyclist Lance Armstrong admitted to using performance-enhancing drugs. As a result, he was stripped of his seven Tour de France titles and an Olympic bronze medal. Click through the gallery for a look at his life and career. Hide Caption 1 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong, 17, competes in the Jeep Triathlon Grand Prix in 1988. He became a professional triathlete at age 16 and joined the U.S. National Cycling Team two years later. Hide Caption 2 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong wins the 18th stage of the Tour de France in 1995. He finished the race for the first time that year, ending in 36th place. Hide Caption 3 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong rides at the Ikon Ride for the Roses to benefit the Lance Armstrong Foundation in May 1998. He established the foundation to benefit cancer research after he was diagnosed with testicular cancer in 1996. After treatment, he was declared cancer-free in February 1997. Hide Caption 4 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong leads his teammates during the final stage of the 1999 Tour de France. Hide Caption 5 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong takes his honor lap on the Champs-Élysées in Paris after winning the Tour de France for the first time in 1999. Hide Caption 6 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – After winning the 2000 Tour de France, Armstrong holds his son Luke on his shoulders. Hide Caption 7 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong rides during the 18th stage of the 2001 Tour de France. He won the tour that year for the third consecutive time. Hide Caption 8 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong celebrates winning the 10th stage of the Tour de France in 2001. Hide Caption 9 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – After winning the 2001 Tour de France, Armstrong presents President George W. Bush with a U.S. Postal Service yellow jersey and a replica of the bike he used to win the race. Hide Caption 10 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong celebrates on the podium after winning the Tour de France by 61 seconds in 2003. Hide Caption 11 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Jay Leno interviews Armstrong on "The Tonight Show" in 2003. Hide Caption 12 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – After his sixth consecutive Tour de France win, Armstrong attends a celebration in his honor in front of the Texas State Capitol in Austin. Hide Caption 13 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong arrives at the 2005 American Music Awards in Los Angeles with then-fiancee Sheryl Crow. The couple never made it down the aisle, splitting up the following year. Hide Caption 14 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong holds up a paper displaying the number seven at the start of the Tour de France in 2005. He went on to win his seventh consecutive Tour de France. Hide Caption 15 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong testifies during a Senate hearing in 2008 on Capitol Hill. The hearing focused on finding a cure for cancer in the 21st century. Hide Caption 16 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – In 2009, Armstrong suffered a broken collarbone after falling during a race in Spain. Hide Caption 17 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Young Armstrong fans write messages on the ground ahead of the 2009 Tour de France. He came in third place that year. Hide Caption 18 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong launches the three-day Livestrong Global Cancer Summit in 2009 in Dublin, Ireland. The event was organized by his foundation. Hide Caption 19 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – In May 2010, Armstrong crashes during the Amgen Tour of California. That same day, he denied allegations of doping made by former teammate Floyd Landis. Hide Caption 20 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong looks back as he rides during the 2010 Tour de France. Hide Caption 21 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong's son Luke; his twin daughters, Isabelle and Grace; and his 1-year-old son, Max, stand outside the Radio Shack team bus on a rest day during the 2010 Tour de France. Hide Caption 22 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong finished 23rd in the 2010 Tour de France. He announced his retirement from the world of professional cycling in February 2011. He said he wanted to devote more time to his family and the fight against cancer. Hide Caption 23 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – The frame of Armstrong's bike is engraved with the names of his four children at the time and the Spanish word for five, "cinco." His fifth child, Olivia, was born in October 2010. Hide Caption 24 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong competes in the 70.3 Ironman Triathlon in Panama City, Florida, in February 2012. He went on to claim two Half Ironman triathlon titles by June of that year. Hide Caption 25 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – Armstrong addresses participants at the Livestrong Challenge Ride on October 21, 2012, days after he stepped down as chairman of his Livestrong cancer charity. Hide Caption 26 of 28

Photos: Photos: Lance Armstrong's rise and fall Lance Armstrong's rise and fall – International Cycling Union President Pat McQuaid announces the decision to strip Armstrong of his seven Tour de France wins and ban him from the tournament for life on October 22, 2012. "Lance Armstrong has no place in cycling," he said. Hide Caption 27 of 28