'Ring' and 'Index finger'can act as a diagnostic tool .

Scientists have discovered that those with a longer Ring finger as compared to the length of the Index finger were twice as likely to develop osteoarthritis of the knee .The study measured fingers of 2000 people with the condition .

Those with a long ring finger suffered more colds and illnesses also generally than those with longer Index fingers .Chickenpox and German measles were also reported in more numbers of cases in this group .

Scientists also reported that one's finger length is determined while in the womb ,by how much one is exposed to the female sex hormone oestrogen and the male hormone testosterone .

The later accelerates growth of the ring finger and the former that of index finger .

People with longer index finger have more testosterone and those with longer ring finger more of oestrogen in one's body .

Exsposure to these hormones in the developmental phase while in womb influence risk of diseases later in life .