After my husband was diagnosed with colon cancer at 45, we changed our family diet. Here's what we eat — and don't eat — now.

The author's husband was diagnosed with colon cancer at 45. Courtesy of Lindsay Karp My husband, 45, is a doctor and encourages his patients to get routine colonoscopies on time. When he went in for his own, he was surprised to be diagnosed with colon cancer. He had no symptoms. Now, we're…