"The state of being starved is a hugely stressful condition, and people respond in different ways, " said Rick Miller, spokesman for the British Dietetic Association.

WSJ: Survivor Rescued in Bangladesh Rubble

Dr Gabriele Nagel, one of the authors, said this may be because asthma is a collection of symptoms rather than a single condition, and different things may trigger it in different parts of the world.

BBC: Asthma risk 'linked to burgers'

China Central Television and other major media say four new people living in different cities in Jiangsu province are in critical condition with H7N9, a strain of bird flu that was previously unknown in humans.

BBC: China media: Concerns over bird flu

Before doing anything in terms of alternative treatments, I'd make sure you got your daughter the best mental health assessment you can find to make sure that she doesn't have a condition such as bipolar disorder, which can often resemble ADHD in childhood but requires different types of medication.

CNN: Do homeopathic treatments for ADHD work?

In the DSM-5, "alcohol use disorder" is now a single condition, rather than two different conditions.

CNN: STORY HIGHLIGHTS

In Britain, a specialist must diagnose the condition and the child must show that he is unable to function properly in two different settings.

ECONOMIST: Parents of hyperactive children face a dreadful dilemma