A 100 gram apple contains 53 calories.

Normal an apple edible part of 160 grams, which contains 83 calories, it takes 57.2 minutes to consume, need about 120 calories. However, people will carry out the basic metabolism, people will consume calories when sleeping, eating and walking, each person's basal metabolic rate is different, the consumption of calories required is also different. Apple is a carbohydrate, water, fiber content, potassium content are high in a kind of fruit, for constipation has a relieving effect on the elimination of edema also has some help, weight loss crowd suitable for apple.

Expanded:

Apples are rich in a variety of trace elements and vitamins and other nutrients needed by the human body, and are recognized as one of the most nutritious and healthy fruits. The apple seed is known as the "library of life", the nutrient content is more than 10 times the pulp. Apple seeds contain a large number of plant hormones, can effectively two-way regulation of human endocrine, promote cell microcirculation, improve cell activity.

However, apple seeds contain the toxic substance cyanogenic glycosides, which can be hydrolyzed to the highly toxic substance hydrocyanic acid (HCN) when exposed to acid or under the action of biological enzymes. Each gram of cyanogenic glycosides in apple seeds converted to hydrocyanic acid is about a few hundred micrograms, there is almost no possibility of poisoning, but in the daily consumption of apples, you should also avoid eating the core part of the fruit.

Baidu Encyclopedia-Apples