In fact, in a group of adult students, drinking marjoram was shown to produce "A significant reduction in body weight after one month of consuming marjoram."
That being said, marjoram is most certainly not the only herbal tea ingredient to show weight-loss benefits.
Researchers have found, in experimental studies, that whitethorn (also called hawthorn) has “tremendous potential as [a] natural weight lowering agent.”
In addition, recent research shows that black tea and oolong tea also help us jettison fat, but not because of the caffeine. In fact, oolong tea boosts both metabolism and fat burning.
Green tea also helps us reduce body fat, weight and our waistlines. It additionally helps us keep our gut microbiome healthy, our balance of good and bad bacteria.
A less traditional yet effective tea ingredient, celery root, has been shown to support circulatory health, healthy insulin levels already in range, and healthy blood pressure levels that are already in a normal range.
Herbal teas also contain other compounds, like antioxidants and flavonoids, which are health promoting, especially for heart health.