Pre-identification is very important in terms of diseases. There is an ability to pre-identify many diseases by reading the palm such as Cancer, Heart Disease, Head, eye, nerve and abdominal issues. If you can identify these diseases, you can prevent from diseases rather than cure:

When you check your nails regularly, you will see some changes in complexion. Also you will see many nail-stains and very large lunula (the white area at the base of a fingernail). Some people do not have this lunula. Hence, we can identify those people have poor immunity system.

Health line is also a good indication of diseases. If you do not have a health line you do not want to worry about diseases. But if you have a distorted health line (Figure-L), your physique is weak. If there are island shapes on the health line by the mount of Mercury, you will be suffering from headaches. If there are island shapes on the health line between heart line and head line, you will have cardiac issues. If you can see island shapes on the health line under the head line (Figure-R), it is an indication of abdominal diseases. If there is an island shape at the end of life line, it means your body is in sweltering condition. Further, if you can see island shapes on the head line, you will be suffering from headaches. If your ring finger is very lean, it indicates the issues in nerve system or the nerve system will be debilitated. An island shape is on the heart line underneath the ring finger indicates issues in the opposite eye. In other words, if this feature is on right hand, you have that issue in left eye and vise-versa. Furthermore, if all the main lines are chain shaped, it indicates that you have a weak body. Likewise, many things can be told with the help of palmistry.