From a Christian perspective, discrimination on the basis of body size/shape is especially heinous. We are called to love all people, sinners and redeemed-sinners (otherwise known as the saints) alike. We are called to love them because they are made in the image of God. I think, however, that healthism is creeping into the Church, preventing us from loving some of our neighbours—or our brothers and sisters in Christ—as well as we are called to do.
Now, you might argue, loving overweight people means helping them to become healthy. Yes, yes it does. But consider this quote from Dr. Jon Robison:
“Health can be redefined as the manner in which we live well despite our inescapable illnesses, disabilities, and trauma.”
Robison makes a very Christian point here, whether he intended it or not. One of the things we know as Christians is that there was a Fall. Human beings, though made in the image of God, are now dying beings, experiencing the on-going effects of the first sin. Our brokenness means that we will suffer disease and illness, that some of us will be born with physical or mental challenges, that we can be injured and maimed, and that we can make mistakes when it comes to taking good care of ourselves, others, and the world in which we live.
We also know, however, that we are being redeemed. Our world, our selves, and our relationships with God and others are all part of that ongoing redemption. When we interact with someone, we are interacting with them both as children created in the image of God and as people who can be or are being redeemed.
Health is a part of that redemption. But it behooves us to note that, in some cases, ideal health (whatever that might look like) will never be possible. No matter how virtuously a cancer patient lives her life, she may still die young. No matter how hard a blind person prays, he might not receive healing. Someone with a chronic disease like Multiple Sclerosis lives as well as he can despite the pain and difficulty associated with the brokenness of his body. Regardless of how often a fat person tries to lose weight, statistics tell us that in 95% of cases, the weight will be regained (sometimes with interest) within 2-5 years.
So, encouraging someone to live a healthy life sometimes means accepting that their body will not be made perfect on this side of the general resurrection, and that, frankly, we don’t know what perfect will look like on the other side. Helping someone live a healthy life means helping them to love themselves well. It means helping them to see that their bodies are giving them cues about what to eat and when and how much. It means helping them to find healthy and pleasurable ways to move their bodies so that they are experiencing fullness of life.
It means not judging someone because they go to the gym and then have an ice cream afterwards. Instead, why not complement them for going to the gym? It means that you welcome people of all abilities and sizes into a physical event—whether sports or dancing or gardening or otherwise—and make sure that everyone is having fun and no one gets hurt. It means affirming someone as made in the image of God and helping them to find abundant life in the body which God gave to them, even as that body is marked by the brokenness of the Fall.