Final answer:
The statement that sports cause many brain injuries in the U.S. is true. While falls are the most common cause, sports are a significant source of traumatic brain injuries, particularly among young and professional athletes.
Step-by-step explanation:
The statement 'Sports is the cause of many traumatic brain injuries in the United States' is true. Traumatic brain injuries can result from a variety of causes, with falls being the most common overall. However, sports injuries, particularly in activities such as football, soccer, and boxing, are significant contributors to the incidence of concussions and head injuries among athletes. The Centers for Disease Control and Prevention (CDC) note that even though sports are not the leading cause of brain injuries, they still account for a notable percentage, especially among youth and professional athletes. Brain injuries in sports can cause temporary problems like headaches, drowsiness, and confusion, and in severe cases, may lead to long-term complications or even death. Measures have been taken by organizations like the NCAA and NFL to improve diagnosis and reduce injuries with various levels of success, such as developing helmet-rating systems to encourage the use of safer helmets.