Food should be treated as medicine. How I understand this is that you eat in quantities necessary at the correct times and in the correct manner. Overeating is from being unrestrictive with one’s self which is easy to fall into when a person hasn’t been guided away from this.
Lifestyle is a word that every company, team and movement would love for you to buy into. If an action, belief, product, can reach enough people to the point it becomes synonymous with that group you may just have a lifestyle on your hands.