This was not a smooth process. The rise of executive power sometimes hurt important interests and always rubbed against the republican sensibilities that Americans inherited from the founders. From time to time, Congress reaped political benefits from thwarting the president. But today Congress reacts rather than leads.
1 Dehydration can sometimes cause blood pressure to drop. 2  However, dehydration does not automatically signal low blood pressure. 3  Fever, vomiting, severe diarrhea, overuse of diuretics and strenuous exercise can all lead to dehydration, a potentially serious condition in which your body loses more water than you take in.
Some conditions can impair blood vessel health and result in low blood pressure. Examples include infections (sepsis), paralysis (injury or stroke-related) and certain endocrine disorders such as low cortisol levels. Medications are one of the most common reasons for too-low blood pressure.