‘We just had to act over Aids’

Activists are quick to attack big drug companies, but Hank McKinnell, the Pfizer boss, says he is doing what he can to fight HIV. Sarah Boseley asks if that is true.

Dyslexia has a language barrier

Readers of Chinese use different parts of the brain from readers of English, write Brian Butterworth and Joey Tang.

Regular migraines linked to brain damage

Frequent sufferers of migraines have an increased risk of brain damage, researchers said today.

Forget ‘hour glass’ women and sleek men – flab is making us tube shaped

Scientists used scanners to measure 11,000 people and found obesity is changing the contours of the nation.