So now this is the complete opposite, right
Current research does not confirm safety
Injecting patients with B12 may have an effect on the persons metabolism and increase energy
Biol Psychiatry 71:956961 Adair JC, Knoefel JE, Morgan N (2001) Controlled trial of N-acetylcysteine for patients with probable Alzheimer's disease
Another study of key barriers in Alzheimers disease research has indicated that enrollment challenges result in slower and more expensive trials, suggesting the need for nationally coordinated efforts to increase diverse participation in clinical trials in this and other disease areas (Malzbender et al., 2020)
Medicine side effects that may result in weight gain: increased appetite fluid (water) retention elevated fat storage a slowed metabolism fatigue, lethargy or weakness (leading to less exercise / activity) For many drugs, it is not known exactly what causes weight gain