Spirulina is welcomed by people because of its rich and balanced nutrition and remarkable health care effect. Buying spirulina health products has become the habit of many people. However, the doctor pointed out that although spirulina is a natural food, and its various health care effects have been verified in practice, there are many kinds of spirulina products on the market at present, and the quality is uneven. If you eat impure spirulina, you may not get health care effect. If you eat contaminated spirulina, it will not promote health, but will.

Beware of heavy metal pollution of spirulina. Theoretically speaking, Spirulina is an algae plant with a history of 3.5 billion years, which has strict requirements for its growth environment. For example, the water quality is required to be alkaline, the PH value is between 9- 1 1, and the growth temperature is as high as 25 degrees. Many microorganisms and bacteria can't live in this environment. If the water quality is not polluted, the produced spirulina should be very pure and safe.

However, with the increase of people's demand for spirulina, many businesses that cultivate spirulina have lowered their requirements for water quality and used chemicals to adjust the PH value of water. In this way, the cultured spirulina will inevitably be polluted by heavy metals in the water, and heavy metals such as lead and mercury cannot be decomposed in the human body, seriously damaging human tissues and organs. Therefore, we must pay attention to safety when eating spirulina and put the prevention of heavy metal hazards in the first place.

Beware that the additives in spirulina are harmful to health. Pure spirulina health care products do not add any other ingredients, and even tablets are directly molded by spirulina under high pressure. However, driven by interests, some unscrupulous merchants will add preservatives to spirulina to extend the shelf life and dyes to improve the appearance and color of the products. These illegal additives are all chemical substances, which will easily increase the burden on liver and kidney after eating, and will easily cause irreversible damage to human health after a long time.

Scientific selection of safe and high-quality spirulina First of all, try to buy spirulina products of big brands, especially pay attention to check their A-level certification and anti-counterfeiting labels. The products of big brands pay great attention to safety and quality from breeding to production, which is trustworthy.

The second is to self-identify the quality of spirulina. You can put spirulina in clean water and observe the color of the water after one day. The water is clear and pure blue, which means the quality is good. If the water is turbid, it means that there are impurities, and the color of the water is green, which means that the dye is used and spirulina is not edible.