Maybe you shouldn’t talk to a cardiologist about preventive medicine not related to heart issues………we have primary care physicians for that. Every preventative care doctor out there knows the benefits of vitamin d. It’s such a silly anecdote to bring up. And you don’t know what to think? Go read the research and make your own conclusion. I would never trust random people on the internet who make up anecdotes. It’s been proven that Vitamin D is a healthy hormone that is important to your well being. Go get it tested and then at least you will have a reason to do research.