The spokesman, Zaibullah Mujahid, told The Associated Press by telephone that Bergdahl was held under "good conditions," and was given fresh fruit and any other foods he requested.
"You can ask him in America about his life (in captivity). He will not complain," Mujahid said.
Since Bergdahl's release last week senior officials, including President Barack Obama, have said the prisoner swap that involved the release of five high-profile Taliban detainees from Guantanamo Bay, and which has caused a furore in the United States, was hastened by concerns the soldier's physical health was deteriorating.