Depends what you mean by normal.
Normal as in: a healthy, logical, sensible relationship with food - exercising control as an intelligent creature can to prevent discomfort even when faced with tasty things, and primarily using food as fuel.
OR
Normal as in: what most people do.
because it isn't the same thing. most people have an emotional relationship with food to a greater or lesser extent. Most people overindulge when they know they shouldn't. The reason that most people aren't battling obesity or disordered eating is that this definition of 'normal' is a continuum. People who put on a few pounds at christmas on one end, compulsive binge eaters on the other.
moderation, though, can be hard. just like recovering alcoholics, for some people (and i suspect that's me) they might never achieve the 'putting on a few pounds over christmas' state, and instead have to aim for the more puritanical, all-or-nothing first definition of normal.
*sigh*
