Regulates blood sugar level: Jamun fruit is very good remedy for the people suffering from diabetes because of its anti-diabetic properties which helps keeping blood sugar level under control by converting starch and sugar into the energy. Another study showed that jamun seeds could lower blood sugar levels by 30%. Good for diabetics: The low glycaemic index in Jamun makes it a good option for diabetics. A study conducted on the anti-diabetic effects of jamun suggests that it holds significant potential to produce safer drugs for diabetes treatment. The fruit is associated with lowered risk of secondary complications of diabetes. The leaves barks and seeds are the most useful parts among which the seeds are popular for their anti diabetic properties.