You mean, something like this?

> Forty-eight articles published in 42 different journals were analyzed, with a total of 3655 subjects with 29.51 ± 21.51 years of age, of whom 1990 consumed or were treated with honey. Of the 3655 subjects, at least 1803 were women (two studies did not specify). The studies included different population groups (healthy subjects, overweight or obese subjects, diabetic subjects, subjects with cancer, children, etc.) and included more than 30 different types of honey. Although it is not a systematic review, the results of the PEDro scale regarding the quality of the articles were in the range of 6–10, with articles scoring 6 or higher being considered of good methodological quality.

How do they know the study participants consumed honey and not corn syrup?

How do they know 1803 study participants were women?

There is no assertion that those individuals were randomized, simply "treated".