Indeed, the researchers said that "changes in total fat were very small" during the course of the study among the participants in the control group.

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Research was carried out in the US on a small study group who complained of sudden "explosive" headaches.

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Islam, an architect, is the head of the Urban Study Group, a small band of architects founded in 2004 that are campaigning to save the cultural heritage of Puran Dhaka, the most historic area in the city.

BBC: Saving Dhaka��s heritage