Insulin and glucagon are hormones secreted by islet cells within the pancreas. They are both secreted in response to blood sugar levels, but in opposite fashion! Insulin is normally secreted by the beta cells (a type of islet cell) of the pancreas.
Yes, that is true in some ways, because if you are on drugs or drunk, you are not in the right state of mind, and it is easier for someone to take advantage of you.