MILLIONS of Americans have been issued a travel warning if they are heading off on vacation and are taking weight loss jabs.

Not only that, but they are also reminded to take action in the TSA line to get exemption from a key travel rule.

It is estimated that at least 6 per cent of the US population is currently taking the increasingly popular jabs, according to a recent KFF health tracking poll .

This translates to just over 20 million Americans.

Whether the medication is being used for health or aesthetic reasons, anyone traveling with their jabs must take action before they fly.

Experts have warned that the millions using the injections risk invalidating their travel insurance if they take off without checking and possibly amending their policy.

Travelers could rack up large b

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