I think a lot of this has to do with the approach medicine takes. Doctor's are trained to treat disease. They don't seem to do a very job at practicing preventative medicine, until a disease is diagnosed.

Perhaps psychiatrists think the GP will address obesity and its complications.

Most psychiatrists don't even bother communicating with a patient's GP. Doctors should work together.

I was in a medical-psychiatric unit, where nurses actually had to use their medical skills, such as starting IVs and doing wound care, so this may have affected the response, I got, when I had a drug interaction.

The drug interaction, I had, caused low blood pressure. I could not get out of bed without feeling very faint. The attending was concerned and determined to find out why. My blood pressure was regularly checked. I had an ECG, which ruled out cardiac problems, and a blood test that checked my hemoglobin and iron levels, and vitamin deficiencies, which I passed. Eventually, it was determined to be caused by an interaction between a benzodiazepine and an anti-psychotic. After the benzodiazepine was discontinued and the anti-psychotic dose lowered, my blood pressure rose.

This experience scared me.

It can cause osteoporosis, a condition usually seen in post-menopausal women. It affects estrogen, a hormone that helps prevent the condition.