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The familial inheritence of Diabetes
is more in Type 1 DM and less in Diabetes Type 2. In type 2, other environmental factors like sedantary lifestyle, weight, smoking
etc also play a role.
In type 1 the inheritance differs from one parent to other, also if both the parents are diabetics the risk is more.
Hence you have to look at the modifiable risk factors and try to correct them.
Wish you good Health