“I've read everything that has come out on him. I sent him a New Year message saying that he would always be my hero no matter what the world says.
“Coming back from cancer and achieving so much makes him great. He is an idol. You see super heroes in fiction, he's a real life hero,” Yuvraj, who also survived cancer after undergoing three cycles of chemotherapy, said on Wednesday.
Armstrong was earlier this year stripped of his seven Tour titles and lost most of his sponsors after the US Anti-Doping Agency said he had been at the front of a systematic doping program.
Yuvraj, meanwhile, said he always looked up to Sachin Tendulkar as an elder brother and his retirement from ODIs has made him very sad.
“Personally, it's a very sad thing for me that he would not be there in the ODI dressing room. Certainly a great player has gone from ODIs. I will personally miss him a lot.
“There is no point talking about his records. If we do so, it will take at least a year to complete. He was someone whom I looked up to as an elder brother,” he said.