Erica, my experience was very similar to yours. Like you, I lost control when I allowed myself that one taste, which led to one meal, which led to one day, which led to all weekend, which led to a full-blown binge-eating disorder that left me at over 300 pounds. I think I've got it under control now. At forty-four, I've been nearly six years without blowing back up or starving myself to nothing, but it's been a long road, and I still live in terror that I'll shoot back up to 300+. The fear even wakes me up some nights. In fact, sometimes, after I've eaten something I shouldn't, I honestly expect to see that woman looking back at me from the mirror, and I'm surprised to see someone who looks relatively normal.
I agree. Eating disorders are baffling. It's so easy to truly lose control, and if we knew, really knew, why it was happening, maybe we'd have more weapons to fight it. Food is an obsession for me, no question about it. I'm either obsessed with eating it, obsessed with not eating it, or obsessed with eating the right amounts and the right kinds, but it's an obsession any way you look at it, and apparently it always will be with me.
Laura, as for the woman at the gym, I'm afraid this is her battle. Until she either asks for help, or until she goes off the deep end and either gains or loses too much weight, there's not much you can do for her, I don't think. Her fear may be very real. She's not ready for that cookie, and she really may be teetering on the edge of control. That one cookie may be the cookie that sends her into a binge-eating disorder. It's a terrible cycle. I was there for about three years of the six I've had my binge-eating under control. I didn't "cheat" even on Thanksgiving or Christmas because I just wasn't ready. I can do it now, without losing control, but I honestly couldn't have then.
Shari