Medical Sciences Stack Exchange is a question and answer site for professionals in medical and allied health fields, students of those professions, related academics, and others with a sound understanding of medicine and healthcare-related sciences. It only takes a minute to sign up.
Sign up to join this community
On an empty stomach, insulin levels should be lower. According to the following study, cells absorb more magnesium when there's insulin. https://www.ncbi.nlm.nih.gov/pubmed/8861135
Also, most of our magnesium is stored in our cells that RBC magnesium levels are more reliable than serum levels in terms of magnesium status.
Does that mean it's better to take magnesium with carbohydrates (unrefined of course) which increases insulin than on an empty stomach?
The article you've linked mentions impaired magnesium uptake in diabetes mellitus type 2, not in healthy individuals.
In cases when meals significantly affect bioavailability of a supplement, there will be likely an instruction on the information leaflet about the optimal time to take it.
