most common sex issues... and how to combat them: 1. Erectile dysfunction Erectile dysfunction (ED) is very common – it affects about half of men aged between 40-70 year olds. It can be a symptom of other medical conditions, such as diabetes or being at high risk of heart disease, so it’s important to talk to your doctor. Dr Sarah Jarvis, GP and clinical lead at Patient.info, told The Sun Online: "It’s also vital to remember that excess alcohol is an extremely common cause of ED. "In recent years, several tablets have been developed to treat ED – Viagra is perhaps the best known but there are several others, which work for different lengths of time. "They’re effective for about 4 in 5 men and are now available from many pharmacists, as well as on prescription. "It’s really important not to be tempted by cheap email offers of ‘miracle cure’ tablets for ED – they’re often counterfeit, which means they may not work and can even be dangerous." 2. Contraception Most women use contraception at some point.