Magnesium: One study found that birth control may lead to lower levels of minerals like magnesium [21], and symptoms of magnesium deficiency include fatigue and muscle cramps [29]
Erythrocyte oxidative damage in chronic fatigue syndrome
In certain regions of the world, marginal or subclinical vitamin B 12 deficiency may be fairly common in other age groups as well, including children, premenopausal women, and pregnant women, primarily due to low intake of animal-source foods (reviewed in 5)
Biochemistry & molecular biology of plants
Pro-cholinergic pharmacological agents also provide symptomatic improvement in FGIDs (213, 214)
The liver contains a 2-phase detoxification system for managing toxins, hormones, certain pharmaceutical medications, and some herbs