There is at least one study on this, published in The Lancet:
Red blood cell magnesium and chronic fatigue syndrome
Patients treated with magnesium claimed to have improved energy levels, better emotional state, and less pain, as judged by changes in the Nottingham health profile.
This was a trial on only 20 patients with CSF and 20 control patients. ...
The article Magnesium transport across the blood-brain barriers (2011) from NIH.gov books says:
Magnesium is able to cross the BBB [blood-brain barrier]...
It is not the ScienceDirect article you linked in the question, but ScienceDaily article that mentions that
magnesium-L-threonate...effectively crosses the blood-brain barrier
The article mentions ...
Magnesium, zinc and melatonin help to manage and control the sleep problems. These three natural components have their own mechanisms in managing the sleep disorders.
Firstly, talking about Melatonin:
Disturbances in the rhythm and amplitude of melatonin secretion may account for symptomatic disturbances to sleep and mood. Melatonin treatment not only ...
While official government recommendations seem to indicate a very low risk:
Toxicological Risks of Selected Flame-Retardant Chemicals. (National Research Council (US) Subcommittee on Flame-Retardant Chemicals.
Washington (DC): National Academies Press (US); 2000.)
No information was found on the dermal ...
Magnesium citrate is not citric acid. In fact, it's not even acidic. And trimagnesium citrate is even less acidic. https://en.wikipedia.org/wiki/Magnesium_citrate
It's on the alkaline side of neutral, and in fact it's used in medicine to alkalinize patients who are acidotic. Oh, and it's also a pretty strong laxative. So your teeth will be fine. And even if ...
Magnesium oil (in the form of spray, gel, lotion or bath flakes) contains magnesium chloride (Amazon). There seems to be no evidence that magnesium chloride is even absorbed through the skin in significant amounts (Myth or Reality - Transdermal Magnesium, PubMed Central).
There is also no evidence that magnesium in any form (including oral) would prevent ...
Symptomatic magnesium deficiency due to "chronic stress" and "mental effort" in an otherwise healthy person on a regular diet is unlikely.
Symptomatic magnesium deficiency due to low dietary intake in
otherwise-healthy people is uncommon because the kidneys limit urinary
excretion of this mineral (Office of Dietary Supplements,
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.
Blood levels for electrolytes are maintained by homeostasis in most people, primarily in the kidneys. But they can actually vary quite widely within hours - depending on health conditions and medications. It can even vary fatally in some (rare) cases.
Why I cannot give a more complete answer:
There are too many possible reasons to discuss ...
The label is incomplete in a way. It's a rule by the FDA. NIH:
the FDA does not require food labels to list magnesium content unless
a food has been fortified with this nutrient.
So unless it's fortified you probs won't see it as the labels are filled with other things like Vitamin D, Calcium. And milk labels are quite small.
Milk is a good source of ...