Body Hair Excessive hair growth is often caused by increased testosterone levels. For example, an individual may grow more hair in the face, chest, chin, or back areas. More often than not, the hair will also be darker and coarser. For some people, however, it can lead to baldness. At the end of the day, it depends on other factors such as genetics.Changes in Blood Pressure High testosterone levels can cause changes in your blood pressure. For example, it can cause it to go down—this can lead to dizziness, headache, and fatigue. The opposite is also true. That is, it can cause your blood pressure to go up. This would put you at a higher risk for heart problems such as heart attack and stroke.