Dr. Tullio Simoncini, an Italian oncologist, gained notoriety for his controversial theory that cancer is a fungal infection that can be treated with sodium bicarbonate (baking soda). Despite lacking scientific evidence to support his claims, Simoncini's unconventional approach has garnered attention from some individuals seeking alternative cancer treatments. However, it's essential to approach such claims critically and consult with qualified medical professionals for evidence-based cancer care.