Elevation by Stephen King 

Although Scott Carey doesn’t look any different, he’s been steadily losing weight. There are a couple of other odd things, too. He weighs the same in his clothes and out of them, no matter how heavy they are. Scott doesn’t want to be poked and prodded. He mostly just wants someone else to know, and he trusts Doctor Bob Ellis.
In the small town of Castle Rock, the setting of many of King’s most iconic stories, Scott is engaged in a low grade—but escalating—battle with the lesbians next door whose dog regularly drops his business on Scott’s lawn. One of the women is friendly; the other, cold as ice. Both are trying to launch a new restaurant, but the people of Castle Rock want no part of a gay married couple, and the place is in trouble. When Scott finally understands the prejudices they face—including his own—he tries to help. Unlikely alliances, the annual foot race, and the mystery of Scott’s affliction bring out the best in people who have indulged the worst in themselves and others.
“Written in masterly Stephen King’s signature translucent…this uncharacteristically glimmering fairy tale calls unabashedly for us to rise above our differences” (Booklist, starred review). Elevation is an antidote to our divisive culture, an “elegant whisper of a story” (Kirkus Reviews, starred review), “perfect for any fan of small towns, magic, and the joys and challenges of doing the right thing” (Publishers Weekly, starred review).