It won't be related to your recent diet or your own nutrition just because the weather is cold and warm ~ it will be better to make sure that you are healthy. During the exam, I worked hard to eat and study every day, and then after a few and a half months, I could have six or seven more (not so many left and right hands). During the holiday, I didn't eat well or sleep well at home, so I lost weight. ...
Your nails are pale white. This is because your hands are cold. When your hands are warm, blood circulation is good. If you look at it again, it may be gone ~ I'm like you ~ and the color in the middle is light. My hands are just cold. Maybe yours is too ~