The calories contained in spinach are low and about 434 grams of spinach can provide 100 calories to the body. Every hundred grams of spinach can provide about 23 calories to the body, so consuming 434 grams of spinach can provide 100 calories to the organism. Spinach is a common vegetable that is rich in nutrients including fiber, calcium, and vitamin A. Every 100 grams of spinach contains 4.5 grams of carbohydrates, 2.6 grams of proteins, 0.3 grams of fats, 1.7 grams of dietary fibers, 487 micrograms of vitamin A, 1.74 milligrams of vitamin E, 311 milligrams of potassium, 66 milligrams of calcium, and 2.9 milligrams of iron. In addition, because spinach is rich in nutrients and low calorie content, so it is very suitable for weight-loss people to eat in moderation, not only will not lead to overweight or obesity, but also able to supplement the body with rich nutrients. Spinach before eating blanching, to reduce the oxalic acid, indigestion of the crowd need to control the intake of spinach in moderation.