In Alzheimer mice models, which are completely flawed to begin with. Another pure junk headline. They also did a retrospective population-based cohort study (n

In Alzheimer mice models, which are completely flawed to begin with. Another pure junk headline. They also did a retrospective population-based cohort study (no intervention), which is not enough to prove any kind of causality and is prone to confounding factors that can't be easily controlled for (how much time people spend in the sun every day will have a huge impact in their Vitamin D levels and their needs for supplementation or not).