Demonstrators protest harmful food colorings in kids’ cereals at Kellogg’s HQ; The science behind the Feingold Diet for ADHD; When a Tarlov cyst is the cause of neck pain; Fruits are now so sweet that zookeepers have to stop feeding them to animals; Vagus nerve stimulation for resistant depression; Peer-review in medical journals is conflicted by $1 billion payouts from drug and device makers.