One dose of ginger didn’t change blood sugar, insulin, fat levels, or inflammation markers after a meal in overweight men.

People who ate ginger with their breakfast felt less hungry and thought they could eat less afterward, compared to when they didn’t have ginger.

Adding a teaspoon of powdered ginger to a hot drink with breakfast might help the body burn a little extra calories after eating, compared to just drinking hot water.

Oral ingestion of ginger powder (2–3 g) increases 24-hour energy expenditure in humans compared to placebo.

Even though ginger made people burn more calories right after eating, that effect didn’t last long enough to add up to more total calories burned over the whole 6 hours.

Ginger slightly raised a hunger hormone called ghrelin after eating, but this wasn’t strong enough to be certain, and it didn’t change the active form of the hormone.