de Graaff, "Effects of high
altitude hypoxia and iloprost on right ventricular function in healthy volunteers," Nederlands Tijdschrift Voor Anesthesiologie, vol.
The mechanism by which high
altitude hypoxia causes decrease in birth weight is not exactly known.
If other variables are added such as hangovers, sleep deprivation, fatigue, medication use,
altitude hypoxia, or flying at night in bad weather, the negative effects are significantly magnified.
Qiao et al., "Effect of Vitamin e supplementation on intestinal barrier function in rats exposed to high
altitude hypoxia environment," Korean Journal of Physiology and Pharmacology, vol.
The authors might have included a third group comprising of individuals who had nothing to do with aviation, for helicopter pilots are exposed to
altitude hypoxia, affecting especially the right ventricle and pulmonary artery pressure.
Expression of fetal hemoglobin in adult humans exposed to high
altitude hypoxia, Blood Cells Mol Dis.