Neha Patel Neha Patel Asked 9 months ago

Does vitamin b12 cause weight gain?

After starting Vitamin B12 supplements a few months ago for low levels, I've noticed a little weight gain. Could there be a connection between B12 and putting on kilos?

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6 answers

Priyanka Sharma Priyanka Sharma Joined Jun 2026 4 months ago
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I recently finished a three-month course of B12 injections. I actually noticed a slight increase in weight because my appetite, which was totally gone due to deficiency, finally came back. It is not fat gain, just healthy recovery.

Sameer Kulkarni Sameer Kulkarni Joined Mar 2026 7 months ago

I completely understand how frustrating it is when you're trying to manage your weight and suddenly feel like a supplement is ruining your progress. I felt so anxious about taking B12 for the same reason. Just know you are not alone in worrying about this.

Kriti Mandloi Kriti Mandloi Joined May 2026 6 months ago

Managing my PCOS makes me very cautious about any weight fluctuations. In my experience, B12 didn't cause direct weight gain, but since we are all different, our metabolic responses vary. It is always safest to monitor your levels with your doctor.

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Neha Kapoor Neha Kapoor Joined Feb 2026 8 months ago

Don't worry! B12 actually helps your body convert food into energy, so it usually aids metabolism rather than causing weight gain. Just keep an eye on your portions and you'll do great! ✨

Meenakshi Sundaram Meenakshi Sundaram Joined Mar 2026 7 months ago

I totally get it, worrying about weight gain when starting a new supplement is very common. B12 actually boosts your metabolism, but because you feel more energetic, your appetite might go up a bit. Just try to focus on healthy snacks.

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Rahul Verma Rahul Verma Joined Jul 2026 3 months ago

I know how terrifying it is when you start a new treatment and worry it will mess up your body. I used to check my weight three times a day while taking B12. Rest assured, B12 itself doesn't contain calories; your anxiety might just be playing tricks on you.

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