The Cell Suppression Theory (CST) builds on existing cancer theories and offers new insights into the disease's origin. It challenges the traditional view of cancer as a result of "cell malfunction" by proposing that cancer arises through a "cell suppression" mechanism. The CST explains the Warburg Effect as an anti-infection response and suggests that cancer symptoms stem from intracellular fungal infections hijacking and suppressing cellular machinery. This theory is the first to comprehensively explain all stages of carcinogenesis and the 10 Hanahan & Weinberg Hallmarks of cancer, offering new research and treatment opportunities.