The following passage (paragraph 3) is mainly used to show that.
Concerns about obesity, food allergies and other health effects of food are fue
new level of scrutiny of chemicals and additives in foods and contribute to shif
notions about portion size, sugar and fat content. Consumption of sugary soda
dropped to a 30-year low while sales of bottled and flavored water rose drama
over the past few decades. Zero-calorie diet sodas long held allure for America
concerned about their weight, but sales of diet sodas have also dropped, with a
some arguing that the decline has been fueled by growing public concern abou
ingesting artificial sweeteners and other food additives. America's love affair wit
food chains is on the wane, with "fast casual" brands that offer convenient optio
which focus on natural, fresh ingredients gaining favor.