Evening Republican, Volume 18, Number 244, Rensselaer, Jasper County, 15 October 1914 — CHIEF CAUSES OF FATIGUE [ARTICLE]

CHIEF CAUSES OF FATIGUE

Bad Ventilation and Altitude Are the Main Factors In Producing This Depression. Fat igue- is caused by anything that interferes with the carrying of oxygen to the tissues. This may be a diminished amount of oxygen in the atmosphere, diminished carrying powef of the blood, diminished lung capacity or interference with the circulation of the blood. The two factors which relate especially to diminished amount of oxygea in the atmosphere are bad ventilation and altitude. The main effect of bad ventilation, especially where there are a number of people in a room, is to increase the humidity. The detrimental effect of this humidity is of more importance than any diminishing of oxygen or increase in carbon dioxide. Ip industry one is more concerned, however, with the diminished oxygencarrying power of the blood. Anemia is produced by a variety of causes, among which are deficient light, insufficient iron in the blood, insufficient variety of food, Irregularity of the bowels, as the sequel of disease (particularly infectious diseases) and of metal poison, such as lead. So, working at night or in dark buildings or dark rooms is injurious to the blood.