Eating too much black licorice a day could cause heart problems, especially if you’re over 40.

The US Food and Drug Administration (FDA) this week issued a warning not to overdose on the sweet treat this Halloween.

It contains a sweetening compound which could cause potassium levels in the blood to fall.

The FDA heard of at least one case of black licorice causing health problems.

Ross: “I don’t think anyone really thinks licorice comes without a cost…”

“It is a type of confectionery,” dietitian Simone Austin told Ross and John.

She said the study looked at consuming 50 grams a day.

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