NHS under pressure, Breast cancer prevention, Lactose intolerance

Do funding requests hinder surgery on the NHS? GP referrals to specialists for common complaints are checked by a panel to make sure they're appropriate, but can the admin for funding requests be more costly and time consuming than the operation itself? Mark Porter meets an eye specialist in Reading who argues that it can. Plus a new genetic test that has been developed to identify women at risk of breast cancer more accurately. And lactose intolerance: there's a burgeoning number of lactose-free ads and products in the shops, but is need driving the market - or marketing driving the need?