The length of finger is mainly influenced by genetic inheritance, which is generally irreversible. Relatively speaking, the taller you are, the longer your fingers will be. It has little effect on people, so don't worry. If you can satisfy your daily life, you don't need to worry.
Extended data:
Finger formation
Fingers are formed in the last three months of pregnancy, which is also the formation period of baby's brain, sex organs and heart. The length of our fingers will change with age, but the "finger ratio" will always be the same as when we were born.
The relationship between finger length and hormones comes from the uterus: in the last three months of pregnancy, the secretion of estrogen and testosterone is much higher than that in other periods of pregnancy, and the level of maternal hormones during this period will affect the future physical condition of the child.
The difference between finger length and finger length ratio is related to the level of sex hormones in the body, and even to the influence and growth of sex hormones before birth. The level of testosterone propionate in men with long ring fingers is relatively high. Testosterone propionate is a sex hormone, which can prevent men from suffering from heart disease. However, the level of testosterone propionate in young heart patients with short ring finger is lower.