Unlike some vitamins, B12 can be stored in the liver for an extended period, sometimes taking years for a deficiency to manifest
A., Samlan, G., Lohani, M., Thangavel, N., & Al-Kasim, M
Injections bypass this entire issue
The eligibility criteria for most FDA-approved weight loss drugs are as follows: Body mass index (BMI) of 30 or higher (classified as obesity) Body mass index (BMI) of 27 or higher (classified as overweight) with one weight-related health condition, such as hypertension, hyperlipidemia, heart disease, and high blood cholesterol levels
This connection has led researchers to focus on better understanding the effect of low vitamin B12 on obesity, insulin resistance, type 2 diabetes, and cardiovascular disease