Dr Keast then compared the daily diets of both groups and found those people who were hypersensitive to fat ate less of it in their daily diet. They also had lower body mass indexes.
''It appears [hypersensitive] people have a mechanism that is telling them to stop eating it, he said.
The reverse was happening in people who were not sensitive to the taste, said Dr Keast.
''They are over-consuming and this is creating an energy imbalance, which is leading to higher BMI or development of overweight or obesity.''