Eating too much of the best things will backfire, including lotus seeds. Because lotus seeds can clear heart, clear heat, stop bleeding and astringent essence. Treat vexation and thirst, hematemesis and nocturnal emission, red eyes and swelling and pain. Appropriate dose can be used as an adjuvant therapy, and too large dose will lead to human condition; Some people with yang deficiency and blood deficiency will have diarrhea if they eat too much. If the above answers are helpful to you, please accept them.