According a recent study, there is no strong evidence that the Pill will make you fat.
A team from the Oregon National Primate Research Study Center used rhesus macaque monkeys to determine if there was a true link between oral contraceptives and excess pounds.
Over an eight-month period, the animals received doses of oral contraceptives, adjusted to their weight so that it mimicked dosage in humans.
Full story: Birth control pills don’t cause weight gain, sez study; No link between oral contraceptive and weight