Maradona has suffered from health problems in the past |
Maradona, who led Argentina to the 1986 World Cup in Mexico, has suffered from health problems in the past.
He has battled both his weight and an addiction to cocaine. He has also been hospitalised twice with heart problems.
No reason was given for his admission for treatment, but the Guemes hospital said it was "not related to an addiction to dangerous drugs".
The statement issued by the hospital said Maradona was suffering from "an imbalance" and was undergoing tests.
"He's staying, he's staying ... his life is not in danger," said his personal doctor Aldredo Cahe, speaking outside the hospital.
His two daughters, Dalma and Giannina, were seen arriving at the hospital a few minutes after he was admitted.
Maradona led Argentina to World Cup victory in 1986, and won league titles at home and in Italy.
But in 1991, he was banned for 15 months after failing a drugs test and tested positive again for banned drugs at the 1994 World Cup in the US.
He retired from competitive sport in 1997. In 2004, he spent 10 days in intensive care with high blood pressure, breathing problems and a lung infection.
Two years ago, he had a stomach stapling operation. He lost 30kg, began playing football again and appeared to be getting his life back on track.
But the Argentine media reported at the weekend that Maradona had put on weight and was considering taking a slimming cure in Switzerland.
Earlier this month, Argentina's central bank said it was investigating him for alleged financial irregularities. 😃