Most people think cancer suddenly “shows up.” A lump. A symptom. A scan that finally catches something. But that’s not how cancer begins. The earliest changes happen inside your blood — not your body. Long before a tumor forms, your biology shifts in ways that create the perfect environment for cancer to grow. These changes can happen 5–10 years before anything becomes detectable on imaging. Here’s what shows up first: • Rising insulin High insulin fuels abnormal cell growth and survival. It’s o