1.   If talks collapse, Republicans need to be able to blame the Democrats for refusing to control their appetite for overspending.

2.   It increases brain levels of both serotonin and norepinephrine, two chemicals that control appetite.

3.   Republicans will describe Democrats as supporting ever higher taxes and opposing a balanced budget because they cannot control their appetite for profligate spending.

4.   The difference is that the pathway is found in brain cells known to control appetite.

5.   Wickham wonders why Robbins continues on the drugs if he has learned to control his appetite.

6.   The mice suffer from a type of obesity prompted by an anomaly in the gene responsible for the production of a leptin, a substance that controls appetite.