According to a new study, people now more often pay visits to doctor for substance use disorders. The frequency of visits is raised up to 70%. The availability of effective treatment also contributed to the increase.

This research was conducted by researcher Dr. Joseph W. Frank of Brigham and Women’s Hospital in Boston. Frank estimated that 22.5 million Americans are dependent on alcohol or drugs.The researchers conducted data from two national surveys of physician visits. The results revealed that the number of visits involving drug or alcohol abuse or addiction rose from 10.6 million to 18 million.

The study found the number of people prescribed medications to treat substance use disorders during doctors’ visits rose from 643,000 to 3.9 million during the study period. Buprenorphine and methadone were the most commonly prescribed medications. Talk therapy was used in about 25 million patients during the same period.