Flutterby™! : Calcium & Vitamin D supplements

Study: Taking calcium and vitamin D doesn't help protect your bones:

Upon drilling down to certain subgroups, they found that for people who started out with at least 20 nanograms of vitamin D per milliliter of blood, adding more vitamin D through supplements was associated with a greater risk of hip fractures. The same was true for people who took high doses of vitamin D supplements just once a year.

Looks like the paper is Association Between Calcium or Vitamin D Supplementation and Fracture Incidence in Community-Dwelling Older Adults: A Systematic Review and Meta-analysis Jia-Guo Zhao, MD; Xian-Tie Zeng, MD; Jia Wang, MD; et al,

JAMA. 2017;318(24):2466-2482. doi:10.1001/jama.2017.19344