INS and Insulin resistance: Randomized controlled trials investigating the effects of tart or sweet cherries on glycemic markers (fasting blood glucose, fasting insulin, and HOMA-IR—Homeostatic Model Assessment for Insulin Resistance, where a score greater than 1.9 indicates early insulin resistance and greater than 2.9 indicates significant insulin resistance) and serum lipids (triglycerides, total cholesterol, LDL–cholesterol, and high-density lipoprotein (HDL)–cholesterol) were included in the meta-analysis.