Sometimes they’re hormonal – men may have low levels of testosterone, and low libido is common after the menopause in women. "Relationship problems are a common cause – you may not feel like sex with your partner but fancy other people." says Dr Jarvis. "If you’re a man, continuing to get early morning erections can be a sign that there’s a psychological cause. "Or it can be a symptom of depression. "If it’s bothering you, speak to your GP – the treatment will depend on the cause." 9. Body image issues Body image issues have always been around but they have undoubtedly become more common with the rise in social media. So many of us depend on ‘likes’ for our self esteem, and forget that the images other people put out on social media are doctored to look more beautiful. Dr Jarvis said: "Taking some time off social media is sometimes all that is needed. "However, it’s important to remember that poor body image is closely linked to eating disorders, and to be aware of the warning symptoms. "