The participants supplemented with 20 or 30 grams of cherry powder (238 or 350 milligrams of anthocyanins) or different forms of cherry extract (most often 20 milliliters; 32 milligrams of anthocyanins) daily for 6 to 12 weeks.

Compared to a placebo or no intervention, cherry supplementation improved the following:

Weight (−0.57 kg; −1.25 lb)
Waist circumference (−1.36 cm; −0.54 in)
Body fat (−1%)
Triglycerides (−31 mg/dL)
HDL-C (+2 mg/dL)
Fasting blood glucose (−5.7 mg/dL)
HbA1c (−0.28%)

There was no effect on LDL-C, insulin, insulin resistance, or liver enzymes.

Cornelian cherry might improve cardiometabolic health Original paper