Neem is referred to as panacea of ailments because of its use in the treatment of various diseases. It has certain chemicals which help in reducing blood sugar levels , killing bacteria and in preventing plague formation in mouth.
The bark of neem is used in treating malaria , skin diseases , etc.
Neem leaves are used for leprosy , skin ulcers , eye disorders ,etc .

The research work has been on for a decade. Neem leaf extract was tested in cancer cells drawn from animals as well as humans.Subsequently,scientists isolated the glycoprotein and tested its toxicity. The glycoproteins does not kill cancer directly but promotes,immune cells which in turn,prevent tumors from growing.That is the reason why neem has been described as panacea of ailments.