Food and Our Waist, Why The Obsession?

Why are we so obsessed with food and our waistlines? This is question constantly kicks up a bevy of theories or reasons as to why a large number of women here in the west (and to a larger degree, other parts of the world) seem fixated on both food and their waistlines. Why the relationship, the correlation between the two? As a fitness and health strategist wit a background in biological anthropology, I can't help but wander if something much deeper, complex, and culturally relevant is at play in this insanity and dare I say it, misconceptions based on misinformation regarding food and nutrition? ...