Not on its own in any reliable way — this is the most oversold claim in the whole category, so it’s worth being clear about.

The research is pretty consistent: WB-EMS produces real muscle and strength gains but no significant effect on total body fat by itself. It also can’t spot-reduce (no melting belly fat specifically).

Where it can indirectly help: more muscle slightly raises your resting metabolism, and a session is a real training stimulus. But weight and fat loss still come down to overall diet and activity — a calorie-balance thing. EMS can be one useful piece of a plan, not the engine of it.

If fat loss is the main goal, treat EMS as a strength supplement and put most of your attention on nutrition and daily movement.