The blood flow velocity was significantly higher in the marijuana users than in the control subjects, both at the beginning of the study and after a month of abstinence from marijuana use. The marijuana users also had higher values on the pulsatility index (PI), which measures the amount of resistance to blood flow.
Coventry Health Care covers weight loss surgery if you meet the criteria set by the insurance company. Gastric bypass, lap band, gastric sleeve and duodenal switch surgery are covered if you meet the requirements.
Coventry provides a full range of risk and fee-based managed care products and services to a broad cross section of individuals, employer and government-funded groups, government agencies, and other insurance carriers and administrators. Coventry Health Care, Form 10-K, Annual Report, Filing Date Feb 27, 2013 (PDF).