My (unverified) suspicion is that these people wanted to pick something that they considered to be a specific diet but that isn’t related to meat-eating and therefore wasn’t listed, e.g. ‘gluten-free’. That could also explain the correlation with age if younger people tend to adopt these ‘alternative’ diets in a higher proportion.
My (unverified) suspicion is that these people wanted to pick something that they considered to be a specific diet but that isn’t related to meat-eating and therefore wasn’t listed, e.g. ‘gluten-free’. That could also explain the correlation with age if younger people tend to adopt these ‘alternative’ diets in a higher proportion.