Friends John O'Flynn and John Gately, from Cork in Ireland, have family in Boston and were not planning on competing in London.

CNN: SHARE THIS

Professor Paul Gately, professor of exercise and obesity at Leeds Metropolitan University, told The Guardian that it was difficult to give "one-size-fits-all" advice.

BBC: NEWS | Health | Exercise 'must be tough to work'

"The bombings made me disappointed in humanity, " Gately told CNN.

CNN: SHARE THIS

In November 2009, a story by Daily Mail columnist Jan Moir about the death of former Boyzone singer Stephen Gately attracted a record 25, 000 complaints to the PCC, on the grounds it was homophobic.

BBC: Prince Harry naked photo prompts 3,600 complaints

Prof Paul Gately, a specialist in childhood obesity at Leeds Metropolitan University, said a tool like this would help the NHS target specific people at risk rather than the "scattergun one-size-fits-all approach, which we know does not work".

BBC: Childhood obesity 'can be predicted by check at birth'

Welch, Taylor Dinerman, Bruce Goldman, James Benenson, Roger Heinig, Mark Kellner, Barbara Cannizzo, Don Frese, Pat Eisenman, Paul Zabbo, Stephan Dejean, Daniel Lippman, Andrew Strada, Roger Wollstadt, Mordecai Bobrowsky, Ronald Butler, Dave Ceely, Wright Truesdell, John Bobek, Terry Holmes, Merv Benson and Bill Gately.

WSJ: Best of the Web Today