Complex sentence: Additionally, the ability of the circulatory system to meet this increase in demand causes saturation, a major result of which is that other parts of the body begin to respond in a similar way, thus exacerbating the problem.
Split into simpler sentences: Additionally, the ability of the circulatory system to meet this increase in demand causes saturation. A major result of which is that other parts of the body begin to respond in a similar way, thus exacerbating the problem.