That statement is TRUE
the rough number is about 7 millions, who starved to death during early years of great depression.
Well, technically that 7 million included the people who died from malnutrition, but in this case malnutrition also included in the death caused by satrvation
Diabetes can cause polydipsia because of the high blood sugar that occurs in diabetes. This is called thirst that is not needed due to the reason that it is excessive.