My wife was a psychology major at Marymount University like 15 years ago and I joined her for a talk by a researcher who was promoting the idea that vitamin def

My wife was a psychology major at Marymount University like 15 years ago and I joined her for a talk by a researcher who was promoting the idea that vitamin deficiencies affected mental illness. It has been a long time so I don't remember the details. I just recall specifically that throughout the whole talk everything sounded straight forward, evidence was intriguing, etc and then at the end someone asked how many other psychologists look at vitamin deficiencies, who else is doing research, etc and he said he was the only one he was aware of that did so. Was very surprised. I wonder how much that has changed over the years.