Excess salt is bad for health because it increases osmotic uptake of water, making the body store more water. This excess water in the body increases blood pressure, according to Blood Pressure UK. Increased blood pressure elevates heart disease risks. According to Action Salt, excess salt in the body increases the risk of osteoporosis, stomach cancer, obesity, diabetes and kidney diseases.
Salt is consumed not only as table salt but also as a component of most foods that are eaten daily, such as cereals, cheese, bacon, ham, smoked meat and fish, soy sauce and yeast extracts among others, according to NHS Choices. Processed foods have a high salt content, so they should not be fed to young children, advises NHS Choices. The higher the salt levels in the body, the more water is retained in the body, resulting in an elevated blood pressure. This strains blood vessels, the heart, the brain and the kidneys, potentially resulting in heart diseases, mental problems such as vascular dementia, and kidney stones and disease. Consuming the recommended salt amounts (less than one gram per day for adults and lesser for children, according to Action Salt) is good for general health because salt play a central role in physiological processes.