Magnesium glycinate in the evening
The shortfall is common and the glycinate form earns its place at bedtime.
Recommended“Most modern diets run short of magnesium, and glycinate is the form that tops people up without sending them to the bathroom.”
Ferritin targets above the lab minimum
Our sources are genuinely split on the target, and united that the lab floor sits too low.
Genuinely contestedFor unexplained fatigue, especially in menstruating women.
Both sides, in their own words
Our sources are genuinely split; here is each case, no referee.
One side
“A ferritin of 20 is inside the reference range and still compatible with feeling dreadful. For fatigued menstruating women I want to see it comfortably higher.”
a haematologist · source video · 00:28:51
The other
“Iron is not a vitamin; it is a metal with a storage cost. Chasing a number without symptoms and a full picture is how people end up overloaded.”
a hepatologist · podcast episode · 00:54:33
In their own words
One faithful sentence per source, linked to the moment it was said; quiet chips mark where money is involved.
a haematologist recommend
“Trials of iron in non-anaemic fatigued women with ferritin under 50 show real improvements.”
a haematologist · source video · 00:28:51
a hepatologist against
“Ferritin is also an inflammation marker; supplementing into an inflamed picture helps nobody.”
a hepatologist · podcast episode · 00:54:33
a GP conditional
“Targets from 50 to 150 all have their advocates; what matters is testing, symptoms and retesting, not guessing.”
a GP · interview · 00:09:26
a sports medicine doctor recommend
“In endurance athletes we treat low-normal ferritin because performance data says it matters.”
a sports medicine doctor · conference talk · 00:37:19
Worth discussing with your GP, especially if you take medication or are pregnant. Entrain describes what is publicly taught; it does not prescribe.
More from minerals and nutrients
High-dose zinc, long term
Past 40mg a day, zinc quietly costs you copper; our sources say skip.
Our sources say skip“Zinc and copper share a doorway into the body. Push zinc hard for months and you can quietly walk yourself into a copper deficiency anaemia.”
Shilajit for mineral repletion
An early signal, interesting but thin; quality-tested or not at all.
An early signal“The fulvic acid chemistry is interesting and the traditional use is long, but the human trials are small and the quality control question is very real.”