The psychologically addictive drugs are difficult to quit because they help those with mental issues.
Explanation:
The drugs help those with disorders, mental illnesses and others to cope with their difficulties. It helps them to acept their qualitites while at the same time giving them confidence that they believe they have because their can control themselves. It is like the study which had a patient who was given 2 pills, one had a drug in it the other didn't and the person didn't know which was which. The patient when taking the empty pill perhaps subconsciously believed that this pill was the one to help them and believed it had the same effect and the patient carried on as if they were on the pill that contained the drug. It was a trial to see wheather they could trick the brain into making it seem that the person was recieving the things it required to seem normal. The pill with the drug gave the body what it needed.
The liver makes sure that blood glucose levels remain steady. But when blood glucose levels fall, the pancreas secretes glucagon. Therefore the answer to your question in the pancreas.
