khoratian hebarari seda and seim. say good sleep plays a vital role in preventing alzheimer's disease by activating the lymphatic system. this research shows that sleep is a biomarker for the progression of alzheimer's disease. the lymphatic system of the brain is activated during sleep and plays an important role in removing toxins and other unnecessary substances from the brain tissue. according to scientists, since sleep disorder causes the deposition of toxins in the central nervous system, sleep deprivation increases the accumulation of toxins and in the long run can cause the development of alzheimer's disease, but cleaning the brain from toxins during sleep effectively resists the progression of the disease alzheimer's help. the next part of the news at 2 o'clock. greetings and respect to all the viewers of mez ekhozt program, we had in the news that the training instructions for notaries of official documents have been published . according to these instructions, those who pass the notarial exam must take the