Not suitable for people:

1. Patients with hyperthyroidism should not eat kelp, because the iodine content in kelp is rich, which will aggravate the condition.

2. Pregnant women and nursing mothers should not eat too much kelp. This is because the iodine in kelp can enter the fetus and infants through blood circulation, causing thyroid dysfunction.

3. Do not drink tea immediately after eating kelp (tea contains tannic acid), and do not eat sour fruits immediately (sour fruits contain plant acid). Because kelp is rich in iron, the above two foods will hinder the absorption of iron in the body.

4. People with low energy, insufficient Qi and blood, liver cirrhosis, ascites and neurasthenia should use it with caution.

5. People with malnutrition anemia and thinning hair can eat more.