Hamster are omnivores who eat insects - many hamster foods don't contain enough quality protein. They love mealworms.
They won't make your hamster unhealthy, but feed sparingly because of the fat content. Freeze dried or live can be fed. If feeding them live, either squash the head first or hold them by the head with tweezers so your hamster eats the tail first. They have quite a strong bite and if your hamster pouches them it could cause an abscess in their pouch. They can also eat wax worms but they are even fattier.
Meal worms can be fed to hamster, but only as a treat, not as a total diet.
They should only be given a maximum of two at a time though, because feeding them too much will give them wet tail (diarrhea) due to a protein over load in their system
