Ahh, there's a
question! The causes of excess weight are numerous/complex.
In the end, the person perceives the benefits outweigh the barriers. Benefits: healthier, appearance, pleasing husband, higher self-esteem? Barriers: have to control eating, fear of change, miss favorite foods. Have a sincere conversation with her about your concerns and why; non-threatening; you love her no matter what;work out with her!