Iron and Magnesium for oldies

It seems that us oldies need to make sure we eat enough Iron and Magnesium in our diets.
Research reported this week says that -

Lack of Iron is a risk for stroke
and
Magnesium  protects against hip fractures

Iron deficiency raises the risk of stroke because it makes the blood stickier
(Dr Claire Shovlin, Imperial College London).
She recommends supplements in those at high risk (who have a rare blood disease that makes it worse).

Magnesium was found to protect against hip fracture, whereas Calcium made no difference
(Science Journal  -BONE, Norway)
Here the recommendation is  - that the effect is so pronounced - that dolomite (rich in magnesium) should be added to the water supply.

Hmm - that one may be worth watching.