How does oral mP4 increase appetite and reduce insulin sensitivity?

[j_lipinski]

Thank you for your informative Blog ' Does Birth Control Cause Weight Gain?'

Please would you explain the mechanism of action whereby oral mP4 increases appetite and reduces insulin sensitivity?

And how, despite these two related side effects, mP4 can promote 'good metabolic health'?
I'm a bit confused as I see your Cyclic progesterone therapy for PCOS blog post says that
"By increasing metabolic rate and lowering androgens, progesterone can promote weight loss and improve insulin resistance."

Thank you