They might start calling it the McDiet.

McDonald Corp.’s chief executive, Don Thompson, revealed at an analyst conference this week that he has shed about 20 pounds in the past year by getting his ‘‘butt up’’ and ‘‘working out again.’’ But he said he hasn’t changed his habit of eating at McDonald’s ‘‘every single day.’’

Thompson was responding to a question about how the world’s biggest hamburger chain is adapting amid the growing concerns about ­obesity.

Thompson said that he lost the weight by getting active again. He noted that Europeans walk a lot and that it’s rare to see Europeans who are ‘‘very, very heavy.’’

‘‘And so I think that balance is really important to people,’’ he said.

McDonald’s CEO: I lost weight by being more active – Business – The Boston Globe