So tired of studies like this that are usually flawed and inconclusive. The benefits of a complex B supplement far out number the negative effects they are trying to scare us with in this article. Anytime there is something proven to be helpful they have to put out a study like this. Coconut oil, turmeric, fish oil, are all helpful but since they are helping someone stay healthy there must be a warning put out that they are actually bad.
Ignore articles like this, stay away from the evil covid vaccine, keep doing what you are doing if you are health conscious.