Actor Mark Ruffalo experienced a vivid dream about having a brain tumor, which led to the discovery of an actual tumor upon medical examination. This phenomenon raises questions about whether dreams can reveal underlying health issues, as some research suggests our brains might process and reflect physical ailments in dreams. Actor Mark Ruffalo experienced a vivid dream about having a brain tumor, which led to the discovery of an actual tumor upon medical examination. This phenomenon raises questions about whether dreams can reveal underlying health issues, as some research suggests our brains might process and reflect physical ailments in dreams. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle