Maria Malta, a publicist with Sony Music, told The Associated Press that there was nothing to add about the singer's condition beyond the statement posted Friday on her website about her hospitalization.
The statement said Lynn was responsive and receiving medical care.
She is expected to make a full recovery.
"Loretta, who just celebrated her 85th birthday, has been advised by her doctors to stay off the road while she is recuperating," reads the statement. "Regrettably, upcoming scheduled shows will be postponed."
And Lynn's sister, Grammy-winning singer Crystal Gayle, said in a statement to The Associated Press, "Many of you have heard that my sister, Loretta Lynn, had a stroke. She's a strong woman and I know she'll come out of this. Our family appreciates your prayers, love and support. We pray for a speedy recovery."
Lynn, who celebrated her April 14 birthday by playing two shows in Nashville, told Rolling Stone magazine in February that she had no plans to attend the Grammys even though she'd received a nomination for best country album. The news came just a few months after the singer had minor surgery due to injuries sustained in a fall.
"I flew all I'm gonna fly," she told the magazine. "The last time they called me and told me they had me booked all over Europe, I said, 'I hope you all have a good time, 'cause I ain't goin' nowhere if I have to fly.' It's a scary thought right now."