You will lose credibility as a writer if you become only a mouthpiece or a copyist; you will gain credibility by grabbing the reader with your own ideas and words. What are the specific detriments of alcohol consumption that you would like to discuss? The pornographic violence in "bloodbath" slasher movies degrades both men and women.
This is a weak thesis because it merely states an observation. Remember, always reassess and revise your writing as necessary.
In college, course assignments often ask you to make a persuasive case in writing. Position: A thesis statement always belongs at the beginning of an essay. Also, make sure your audience will want to learn these new facts and possibly embrace these new opinions.
Remember that your thesis needs to show your conclusions about a subject. Your readings about the topic, however, have led you to the conclusion that elementary school children are consuming far more sugar than is healthy. It's impossible to weigh every "thing" that ever happened in Europe.