5. Weight loss
Both our large and small intestines absorb nutrients and useful substances from the food that we eat. The small intestines mostly absorb chemicals such as vitamins, minerals, proteins, fat and oligoelements. The large intestine’s primal function is to absorb the water from the aliment, in order to help hydrate our system. If our intestines are not working well, they won’t be able to properly absorb the nutrients from our food, and we could have nutritional deficiencies even if our food intake is correct and sufficient.
Some symptoms like diarrhea also prevent our intestines from absorbing all the nutrients that we need, because our bowel content leaves our system before it can be properly processed. For this reason, irritable bowel syndrome might lead to nutritional problems, as well as weight loss. If we cannot absorb the caloric molecules from our food, then our body will have to use up our reserves, thus making us lose weight.