Can leeks and kelp be eaten together?
Under normal circumstances, leek and kelp can be eaten together. Details are as follows:

Leek is rich in vitamin C, dietary fiber, and certain minerals, while kelp contains abundant iodine, calcium, iron, and various vitamins. Combining the two can provide more comprehensive nutrition, contributing to overall health. The dietary fiber in leek aids intestinal motility, and the algal polysaccharides in kelp help regulate intestinal flora, jointly promoting digestive health.
However, both leek and kelp are cold-natured foods. Consuming excessive amounts at once may irritate the gastrointestinal tract, potentially causing discomfort such as diarrhea and abdominal pain. Additionally, because kelp contains iodine, excessive consumption may worsen existing thyroid conditions. Some individuals may also be allergic to either leek or kelp; to avoid allergic reactions, consumption is not recommended in such cases.
In daily diets, maintaining a balanced and diverse intake of foods is key to ensuring nutritional balance while minimizing health risks.