Heavy coffee consumption increases death rates in under-55s, study suggests

Scientists claim those in age group who drink average of more than four cups of coffee a day are at 56% greater risk of death from all causes

We don’t know if antidepressants work, so stop bashing them

Pete Etchells: Recent attacks on antidepressants simplify a complicated picture about their effectiveness, and people with depression suffer for it

Breastfeeding for six months can delay breast cancer onset by a decade

Spanish study of 504 women shows earlier onset of breast cancer in women who breastfed for less than six months

Benefits Britain 1949; Horizon: Monitor Me –TV review

Tom Meltzer: Does the time-travel-and-tears genre ever actually give us real insights into the past?

Afraid of spiders? Try sleeping on it

Daniel and Jason Freeman: The therapist's couch may make a comeback – for taking a nap after sessions for phobias, anxiety and depression

The 40-week pregnancy myth has popped

Viv Groskop: We now know pregnancy can vary by up to five weeks – so why aren't 'overdue' mothers given more information?

Can taking up and then quitting smoking increase your salary? No

Suzi Gage: A Daily Telegraph headline claimed this was the route to higher wages, as ex-smokers were top earners in the US

Waking up to the link between a faulty body clock and mental illness

Russell Foster: Biological clocks are known to schedule sleep and changes in alertness, mood, strength and blood pressure, but recent studies suggest they are also deeply involved in mental health

Marriage between first cousins doubles risk of birth defects, say researchers

Study of 13,500 babies born in Bradford concludes cultural practice in Pakistani community outweighs effects of deprivation

Phobias: The rationale behind irrational fears

Dean Burnett: Phobias are very common, but what are they and where do they come from?