answer 1) yaa it is drastically low.
answer 2) no it not not difficult to raise it to normal level. have proper sun exposure in a week (atlest 15 minutes twice weekly) and medication.
answer 3) yaa it is safe & effective
answer 4) low vit. d3 is associated with diabetes
, low bone density
, even hyper triglyceride
answer 5) i have told you enough about low d3 thanks.