Metabolism.

[neiljames77]

Are there any safe or effective tablets that can speed it up?
I'm not obese or anything but I'd like to lose a stone or two.
I can spend all week on 1 meal a day and my weight doesn't change.

Get thee to your gp and get some bloods taken, have a chat about your thyroid function and anything else that the gp suggests.

Medication for speeding up metabolism is out there, but it's as unsafe as feck and can do real harm.