My almost 90 years old grandmother was having episodes of demency. She would see stuff that didn't exist, talk to people that weren't there, and not recognize h

My almost 90 years old grandmother was having episodes of demency. She would see stuff that didn't exist, talk to people that weren't there, and not recognize her own relatives. After weeks of doctor visits, and we all being 100% sure she was having something serious like Alzheimers, turns out it was vitamin D deficiency. Just sharing this here because I had no idea vitamin D deficiency could cause this.