Benefits: clearing away heat and toxic materials, lowering blood pressure, treating coronary heart disease, and having good dietotherapy effect on sore throat, periodontitis, clearing fire and diarrhea.

Disadvantages: Some studies have mentioned that the possible carcinogens in fern roots are water-soluble. In other words, if it is washed repeatedly, it may be washed off. In this animal experiment, the crude extract accumulated by grinding fern roots was used, and it was not washed repeatedly. However, when people made fern root vermicelli, they washed it repeatedly and added a lot of water to make vermicelli, which objectively reduced the number of possible carcinogens. That is to say, there are carcinogens. If you eat them often, your body's self-regulation system will not digest them. In addition, fern root powder is mainly starch food, which is not conducive to digestion. It is best for the elderly to eat at noon, and each time it should not exceed150g. It is best for the elderly with diabetes not to eat it.

Introduction in the food spectrum: Fern root powder is rich in nutrition and ranks in the forefront, so it should be used in moderation. Taboo: Eat too much!