Statins do not cause many of the side effects which have been linked to the drug, research suggests. A study of 124,000 people published in the Lancet looked at side effects including memory loss, depression, sleep problems, erectile dysfunction, weight gain, nausea, fatigue and headaches . It revealed that over a four year period patients who took statins were no more likely to experience such common symptoms as those given a dummy drug. The research team at Oxford University said there is "