Can fortune telling really be worked out?

I once watched a program about a doctor in China who looked at people's palm prints to see a doctor. She is based on an ancient book that tells fortune through palm prints. The Chinese doctor said that people's palm prints will change according to their health status, and the health status of your ancestors will be passed on to the next generation through palm prints. In this way, you can see your palm print and calculate whether your family is rich or not. In addition to palmprint, many appearances of human body can show people's health. The fortune teller knows everything by "seeing, listening and asking", which is my inference. As for those who count birthdays, I don't know why!