Relatives of people with Alzheimer's may have a much higher risk of developing it themselves, new research suggests. Sarah Ebner on what it is like to care for a sufferer - while wondering if you are next
More and more of our children are being diagnosed as autistic, though experts cannot agree on why it is happening. Are we getting better at spotting the signs earlier - or on the brink of an epidemic?
The islanders of Okinawa live longer than anyone else on the planet. And they stay fit, active and happy long into old age. Now a new book reveals their secrets. Emily Wilson reports.