What is dangerous about living 7 days on one can of sardines?

Living on one can of sardines for seven days poses several dangers, primarily due to nutritional deficiencies. While sardines are rich in protein and omega-3 fatty acids, they lack essential carbohydrates, vitamins, and minerals needed for overall health. This restricted diet can lead to fatigue, weakened immune function, and long-term health issues. Additionally, consuming high levels of sodium from canned sardines may increase the risk of hypertension and other cardiovascular problems.