Once there was a young student who frequently had nightmares about being constricted by a giant python, and later he was diagnosed with a malignant tumor. A woman dreamed of being buried under dirt, and two months later, she was diagnosed with tuberculosis. Soviet doctor Vasily Kazakin believed that these dreams were not mere coincidences, but rather a warning mechanism of the brain that could signal diseases in their early stages. Through his research, he discovered that dreams could predict various illnesses, such as lung disease, hypertension, and even internal organ issues. Kazakin firmly believed that dreams are a powerful tool for diagnosing diseases, especially at night when the brain is most active. In 1975, American journalists Henry Griss and William Dick visited Kazakin and heard his astonishing stories about diagnosing illnesses through dreams. Kazakin had personally experienced the siege of Leningrad during World War II and used dream omens to predict the deaths of some individuals. He accumulated thousands of cases and found that dream scenarios often foreshadowed future health conditions.