Asked in Climatology and Climate ChangesHuman Anatomy and Physiology
Does your blood thin in hot climates?
January 24, 2010 9:20PM
Blood is thinner in a warm climate because:
More water is needed to be carried - when perspiration occurs, water is lost.
More electrolytes are needed in heat - lost from perspiration.
Body activity is higher in the warmer temperatures so more oxygen has to be carried: thinner blood requires less work to move it to extremities.
In a cold climate conservation of heat occurs and vessels contract reducing volume blood vessels can carry.