2. Disadvantages. Gastrointestinal discomfort: excessive consumption of sunflower seeds may lead to the conversion of heat into fat in the body, which will stimulate the gastrointestinal tract of the consumer to some extent, resulting in indigestion symptoms such as abdominal pain and diarrhea. Especially for people with weak gastrointestinal function, it is recommended to reduce consumption. Elevated blood lipid: Because there is a lot of oil in sunflower seeds, excessive consumption may increase the cholesterol content in the body, resulting in elevated blood lipid and obesity. Elevated blood sugar: Sunflower seeds contain certain sugar and oil, which will raise blood lipids, which will be converted into glucose through gluconeogenesis, thus raising blood sugar, which is not conducive to controlling blood sugar in diabetics.