Identical twins, who share all genes, were much more likely to respond the same way to new foods than non-identical twins, who like other siblings only share about half their genes. Researchers concluded that genetics played a greater role in determining eating preferences than environment – since each pair of twins lived in the same household.

Wardle said food preferences appear to be “as inheritable a physical characteristic as height.”

Unlike nearly every other phobia, neophobia is a normal stage of human development.

Scientists theorize that it was originally an evolutionary mechanism designed to protect children from accidentally eating dangerous things – like poisonous berries or mushrooms.

The study also sheds light on why I have never had any idea what “bitter” is supposed to taste like.

Other taste-related traits – like the ability to taste bitterness – are also inherited. Scientists have already identified the gene responsible, and have found that approximately 30 percent of Caucasians lack the gene and cannot taste bitterness.