Saltpaste itself does not cause fat, but food that is salty may increase the amount of food eaten, leading to excess energy, which in turn may cause obesity.
The main ingredient in food that causes the salty taste sensation is salt, which itself is composed of sodium chloride, which is an inorganic salt, and has no energy and does not cause obesity. However, if you often eat salty food, increasing the amount of food intake, more than the daily calories required by the body, will cause obesity.
Dietary guidelines for Chinese residents recommend a daily intake of salt of no more than 5g per person, so it is best not to make the food too salty. Long-term excessive intake of salt may lead to a variety of diseases, such as high blood pressure, stomach cancer, strokes and so on. If you feel unwell, you should seek medical advice.