Ho, 75, underwent adult stem cell therapy, a procedure that's still under review in the United States, last Nov. 28 in Bangkok, Thailand, as a last-ditch effort to restore his heart, which has weakened.

"I learned that you cannot fight Mother Nature, so don't mess with her," Ho said. "You have to listen to your body. You can't think you're Superman."

Ho has been advised to avoid stressful activities, and he said he is grateful for his fans, who have shared get-well wishes and prayers for his recovery.

Don Ho has invited doctors and experts in stem cell therapy to join him in a press conference, tentatively set for Jan. 15, to raise awareness of the procedure he has successfully undergone. More details, including site and time, are pending.

Those with messages for Ho may send them to Don Ho, P.O. Box 90039, Honolulu HI 96835.

Note: Read more about Don Ho and his experience in Thailand in Friday's Honolulu Advertiser.