Yo-yo dieters’ brains and drug addicts’ brains have similar behaviours

Yo-yo dieters’ brains eventually show “drug-addict” like reactions. Compulsive eater eventually become immune to the reward of pleasurable food, and need a bigger and bigger “hit”, just like drug addicts. Compulsive eaters and drug addicts have similar brain reactions.

The secret to happiness? Contagion! Wait! What? Seriously?

Harvard Medical School’s surprising discovery: Your happiness can be increased by someone you have never spoken to, have never met, and don’t even know exists. It turns out happiness contagious and spreads from one person to the next, up to a maximum of three degrees of separation. So a friend of a friend of a friend, who is happy, can eventually increase your happiness.