As with most diseases, optic neuritis has a “favored” population: 1. Women: Women are the most common group with optic neuritis, especially those between the ages of 18 and 49. The number of female patients with optic neuritis is about three times higher than that of male patients. 2. Patients diagnosed with multiple sclerosis (MS): People diagnosed with MS are a high-risk group for optic neuritis. Optic neuritis is often the first manifestation of MS. Optic neuritis can either be the first symptom (1/4) of multiple sclerosis (MS) or alone, or secondary to the course of the disease. MS occurs during the course of the disease in 8.7% of patients with optic neuritis, and this rate increases each year (30% at 5 years of follow-up and up to 58% at 15 years of follow-up). Of these, only a few cases resolve spontaneously. Long-term follow-up shows that 2/3 of women and 1/3 of men with optic neuritis eventually develop MS, and statistics show that the risk of developing MS after an episode of optic neuritis is as high as 13% to 58%. There is no authoritative data to prove that women with a sweet tooth are more likely to develop optic neuritis. The rumor may be related to the fact that the metabolism of sugar in the body requires the consumption of vitamin B1, as vitamin B1 deficiency may be an important cause of optic neuritis. However, it is certain that a sweet tooth is not good for health.