There is a relationship between osteoarthritis of the knee and diet, but not strongly, sometimes subtly, but certain foods can lead to the onset of synovitis in the acute phase of osteoarthritis, especially long-term dietary preferences can have an effect, only one is not aware of it, and several recent cases have clearly corroborated the correlation between sweets and synovitis. Typical case: Female, 48 years old, had an annual winter episode of knee edema without any cause for the past four years. Ten years ago, she had been diagnosed with osteoarthritis, with mild pain on the medial side of the knee joint after exertion, and no pain in the usual years, belonging to mild osteoarthritis. This time, he was admitted to the hospital with severe knee swelling, but the pain was not heavy, no fever, and the X-ray showed grade 2 changes in osteoarthritis (to remind you that osteoarthritis is basically graded by X-ray, not by MRI), I saw that the condition was not heavy, and probably the main thing to find the cause of the swelling, i.e., what stimulated the synovial membrane to swell. The patient himself found it strange, and the onset of the disease was at this time of year for four consecutive years. Winter onset seems to be the norm in osteoarthritis, where temperature changes have an effect on the joints, but this case is unique in that it is very well heated. There is no chance of getting cold. Unless this patient’s body has such a strong and punctual cycle of seasons! However, I routinely draw out the joint fluid for testing. There was no abnormality in the appearance of the joint fluid, the bacterial culture was negative, the cell count was consistent with arthritis, and only the glucose level was 7.4 mmol/L. The biochemical indexes of this joint fluid were measured with a blood biochemistry meter, and her blood glucose level for the same purpose was only 5.6 mmol/L. My previous experience in diagnosing diabetic arthritis was that the sugar level of the joint fluid was higher than The same time the blood expansion is less than 2mmol/L above, I told the patient this suspicion object, the patient denied diabetes, I did further diabetes examination after the next day, indeed no diabetes, but the patient said to me that she loves to eat sweets, every day the breakfast and lunch are sweets, especially snacks, basically the main food, eat less in the summer and autumn, but in winter to go out less, she ate significantly more sweets! Whether the two are clearly related, I want the patient to observe the law, but checked the information, too much intake of sweets will indeed increase the frequency of knee synovitis, because too much sugar will stimulate the synovial membrane to trigger inflammation, it can be seen that friends with osteoarthritis, diet should still pay attention to which do not too much, do not addicted to a particular food!