Trends and characteristics of Tai Chi and Qi Gong use among U.S. adults: Results from the 2007–2017 National Health Interview Survey

•The greatest increases in TCQ use were among some vulnerable subgroups, which may help ameliorate health disparities.•TCQ use in U.S. adults was 1.17% in 2007, 1.27% in 2012, and 1.70% in 2017, representing a 64% increase from 2007 to 2017.•TCQ use in 2017 occurred in vulnerable subgroups, such as people with low income and having delayed access to health care.