Risks of manipulating the global thermostat

If someone offered you a magic pill that claimed to cure all health ailments, would you take it? Let’s say you did. Perhaps you’d start eating pizza and ice cream for every meal, since proper nutrition would no longer be a concern. Maybe that exercise regimen would fall by the wayside as well. You could forgo all prescribed medications. The risk, of course, is that the pill would fail, or come with unintended consequences.