Drinking less water usually does not affect elevated platelets. Most elevated platelets are associated with anemia, blood loss, infection, and myeloproliferative disorders. Thrombocytosis can be diagnosed if the platelet elevation exceeds 400 x 10^9/L. Drinking less water does not usually have a significant effect on the platelet count. The normal range of platelet count in the blood is (100~300) x 10^9/L. When the platelet count exceeds 300 x 10^9/L, it can be elevated platelets. Thrombocytosis can be diagnosed when platelets are elevated above 400 x 10^9/L. If the platelets are only slightly elevated, it may be caused by trauma, infection, anemia, etc. and there is no need to worry too much. If thrombocythemia is present, it may be related to myeloproliferative diseases, anemia, blood loss, infection, rheumatic immune diseases, malignant tumors, etc., and requires attention. Thrombocytosis patients can improve the relevant examinations in a timely manner, under the guidance of the physician to clarify the cause of the disease.