It could be genetic. Due to malnourishment or malfunctioning of the pancreas, the beta cells stop producing or produce less insulin. This results in to improper utilization of glucose in the body by tissue or cell. Decreased insulin may be caused due to stress, obesity, excess intake of sweetened food and drink and too much sleeping.
Ayurveda believes that if a person is lazy, sleeps all the time, takes sweetened items in excess, who is always eating without any worry may welcome this disease. One who consumes jaggery in excess quantity also prone to have this. This could be hereditary as given by parents.
When the digestive fire is poor one produces bad quality of nutrients to the body this may turn in to disease. The factor aggravating Vata Dosha and Kapha Dosha also leads producing this trouble.
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