By Jenna Mitchell According to recent findings out of the Mayo Clinic and Olmsted Medical Center, nearly 70% of Americans take at least one prescription medication, over 50% take two, and 20% take more than five. Furthermore, the same research shows that those percentages are only going up as prescription drug use has been steadily increasing throughout the United States for the past decade. Money spent on these drugs is also on the rise. A 2015 study by the IMS Institute for Healthcare Informatics, a company that tracks sales at the pharmacy level for drug companies, reported that in 2014 total drug spending was $374 billion \u2014 up 13.1% from the previous year. In 2014, the most commonly prescribed drug was Levothyroxine at 120 million prescriptions. It was followed by hydrocodone at 119 million, Lisinopril at 104 million, Metoprolol at 85 million, and Atorvastatin at 81 million. Another study found that one in six U.S. adults takes a psychiatric drug, such as a sedative or antidepressant. Prescription Drugs: When Use Becomes Abuse If people aren\u2019t careful, their use of prescription drugs can quickly slip into abuse and addiction. According to the National Institute on Drug Abuse (NIDA), approximately 52 million people (20% of those 12 and older) have used prescription drugs for nonmedical reasons at least once. Teenagers are strongly represented in this category. About one in 12 high school seniors reported past-year nonmedical use of Vicodin and one in 20 reported abusing OxyContin\u2014making these medications among the most frequently abused. What\u2019s more, a report from the Centers for Disease Control and Prevention stated that the number of fatal overdoses per year in the United States caused by these drugs is higher than the combined total from heroin and cocaine overdoses. Prescription drug abuse includes everything from taking a larger dose than you\u2019re supposed to, taking a family member\u2019s or friend\u2019s prescription pain medication for your aching back, to getting high by snorting or injecting ground-up pills. In the U.K., the number of individuals addicted to prescription drugs is overtaking those struggling with heroin use. Becoming educated on the warnings signs of prescription drug abuse is one way that family and friends can help prevent addiction in those they care about. Warning signs of prescription drug abuse include excessive mood swings, needing more sleep or less sleep, poor decision-making, appearing high, especially energetic or sedated, and \u201closing\u201d prescriptions so that more must be written. Prescription drugs should also be kept in a secure location at home so that other family members don\u2019t have access to them. Effects of Prescription Drug Abuse When used incorrectly, prescription drugs can cause a multitude of short- and long-term consequences. Short-term effects may include:\u00a0 \tNausea and vomiting \tHeadaches and difficulty concentrating \tDizziness \tDry mouth \tBreathing problems \tMood disturbances \tSweating and flushing Long-term effects may include: \tSevere constipation \tOrgan damage \tAnxiety \tSkin infections \tMalnutrition \tMood swings \tIrregular menstrual periods Additionally, high doses of prescription drugs may cause serious health effects such as respiratory depression, decreased blood pressure and heart rate, lethargy and coma. If you or a loved one becomes addicted to prescription drugs, proper treatment and support can help jumpstart the road to recovery.