Celebrity chef Jamie Oliver has joined health professionals and teachers to condemn the use of sporting role models to promote junk food. A letter to The Times signed by Oliver and others...says the use of well-loved sports people to advertise junk food is sending the wrong message to children...It reads:..."We believe it is wrong for athletes to encourage the excessive consumption of such items, which are fuelling poor health and obesity. David Beckham is a great sportsman, yet he has endorsed Pepsi. What about the impact of Gary Lineker's association with Walkers crisps? Or the partnership between Mars and the FA [Football Association]?" [also refers tp McDonald's, Coca-Cola]