Based on what I've seen I'm not convinced vitamin D is responsible for all of the benefits that get attributed to it. It is very hard to separate the impact of

Based on what I've seen I'm not convinced vitamin D is responsible for all of the benefits that get attributed to it. It is very hard to separate the impact of getting vitamin D from the sun from other effects like exercise and spending time in nature. If you're worried about vitamin D levels and can do it, I'd suggest small lifestyle changes like taking a 10 minute walk outside after meals before supplementing. Having said that, I do currently also supplement vitamin D since its winter.