no. there is no correlation between vitamin b12 and weight changes either causing weight gain or facilitating weight loss.
can vitamin b12 be used for weight control. i took heavy does of steriods for mirgraines administered by a family doctor's pa. at the time i was 44 years of age. i left shortly after receiving the medication to go to california to visit my family. i gained huge amounts of weight each day. by the time i got back from california i had gained nearly 100 pounds. i am now 69 and frustrated & asshamed of how heavry i am. i have exercised and dieted on chicken fruits and vegetables. could vitamin b12 injections help.