Makes bizarre, ridiculous arguments. On the low end, he has a high-sugar diet rapidly causing fatty liver disease in 18 days... which shockingly rapidly clears up in days or weeks after the diet stops. On the high end, he claims that all of capitalist consumerist culture can be blamed on refined sugar, which gets the relationship pretty backwards.
The ending music video segment is unfunny and completely out of place.
Oh, and it's mostly a sales pitch for widely-discredited and disrespected pseudoscientists and their views. See: www.slate.com/articles/health_and_science/medical_examiner/2015/08/that_sugar_film_science_debunking_links_to_mood_health_fatty_liver_disease.html