Shortly after Gagarin returned to Earth from space, he developed symptoms such as dizziness, headache, insomnia, fatigue, unstable blood pressure, dermatitis, joint pain, emotional irritability, endocrine disorders, and memory loss. Doctors could not determine the specific cause. After repeated arguments, scientists concluded that when the human body entered space, it was far away from Earth’s magnetic field, and the body experienced “magnetic starvation,” which made Gagarin suffer from a short-term “magnetic deficiency syndrome.”