Answer:
The answer is Conrad and Barker, in a 2010 research.
Explanation:
According to their findings, general knowledge about health is transmitted socially. This also means that all society's biases, such as gender or age, are reflected in this knowledge.
Another example is how, in the past, cigarettes were not seen as harmful as they are today. Over the years, social awareness about tobacco health risks has been increasing --and maybe not so much occurs with sugar consumption, which has been shown to be just as harmful in excess.