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Helen Saul

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Science: The bad news about ‘good’ cholesterol

Space yields the secrets of the heart

Science: New light on cancer treatment

Rare orchids handicap golfers

Tamoxifen trial ‘too soon’

Fat is a pharmaceutical issue: Every day millions of people turn to diet pills as a last resort. But as drugs companies continue to prey on this desire to be slim, more and more doctors are challenging the chemical fix

Bad timing puts babies at risk: When carried out in early pregnancy, a minor operation used in diagnosing inherited disease in the fetus has been linked to birth defects

Chancing your arm on nicotine patches: There is scant evidence to show that patches on their own will help people to stop smoking

Science: Blood ‘bypass’ may help healing after surgery

Science: Action replay revives wasted muscle