Vitamin B12 deficiency may occur in between 40% to 80% of the vegetarian population who are not also consuming a vitamin B12 supplement.In Hong Kong and India, vitamin B12 deficiency has been found in roughly 80% of the vegan population as well
Small studies and research on animals suggest that L-theanine could help with relaxation, improved sleep quality, and neuroprotection
Pathogenic, therapeutic, or diagnostic
Six distinct categories of rats were set up: Control (Control), Glutatyone (GSH), Melatonin (Mel), Carboplatin (CARB) Carboplatin+Glutatyone (CARB+GSH), and Carboplatin+Melatonin (CARB+Mel)
Currently there is no established upper limit for B12 due to the low potential for toxicity
Vegans or strict vegetarian diets can be at particular risk of developing a deficiency as non-animal sources of food usually contain no or very low doses of B12