Many people suffer from phobias, ranging from the common (like acrophobia - fear of heights) to the obscure (like arachibutyrophobia).

However, it may be that your diet is to blame. Research suggests that folate deficiency may be behind irrational fears and anxiety, so try upping your intake of folate (found in lentils, spinach and beans) - as well as mood-boosting Omega-3 - by snacking on avocado.