1. The calories of soba noodles (based on 100 grams of edible portion) are 340 kcal (1422 kilojoules).

2. The calories per 100 grams of buckwheat noodles account for about 15 of the total daily calories recommended by the Chinese Nutrition Society for ordinary adults to maintain health. Regular consumption of buckwheat is not likely to cause obesity because buckwheat contains plant protein with high nutritional value and good balance. This protein is not easily converted into fat in the body, so it is not easy to cause obesity.