Can diabetes actually develop from eating too much sugar? If so, how exactly does this happen?

A new study>probably. Type 2 diabetes is strongly hereditary and prior to recently the answer was: if you have an inherited genes for DM then too much sugar or calories in general>obesity>develop DM.**However a recent 10 year study comparing the sugar consumption in 175 countries and the population's development of DM showed a direct connection, independent of obesity. For each additional 12 oz soda/day> DM ^^ 1%