When I saw it, it was a screenshot of WeChat friends circle.
She asked, is the red dragon fruit really so magical?
For a moment, I felt that CCTV II was possessed by Huang.
I sent a honey smile and replied, it's amazing. I'm sick.
In fact, many times, you don't need a lot of scientific knowledge to make a general judgment.
It mainly depends on whether you can ask "reasonable questions" and find out the logical flaws.
For example:
1, the plant protein of red pitaya can excrete heavy metals.
-Do white-hearted pitaya have this kind of protein?
-Do other plants have plant protein?
-Can animal protein excrete heavy metals? (Lobster poisoning drinks milk)
-Can discharging heavy metals be equated with "intestinal conditioning"?
2, red dragon fruit (anthocyanin) beauty anti-aging.
-What other foods have anthocyanins?
-Is the anthocyanin content of pitaya high?
-Is the skin of people in the red-heart pitaya producing area long-lived?
-How to directly compare food with wiping?
If you can ask these questions, you should know that the high school chemistry teacher's words are logically difficult to justify and have limited credibility.
Maybe you don't know what happened, but it just doesn't feel right.
Below, I will explain it carefully.
Heavy metals and protein can be chelated together, so it is correct that rich protein is beneficial to discharge the heavy metals in the intestine.
Minamata disease (methylmercury) and painful disease (cadmium) occurred in Japan in the past, which is a world-famous environmental public health disaster.
The root cause is closely related to the long-term intake of food and water seriously polluted by heavy metals. One of the factors was that the local people's diet structure was relatively lacking in protein.
In today's social environment, as long as it is not acute heavy metal poisoning or long-term high-dose exposure, ordinary people do not need to take a lot of protein to "detoxify", and normal diet of protein can also antagonize trace heavy metals.
Besides, there are so few red pitaya in protein, isn't it better to eat meat, eggs and milk?
In addition, crayfish food poisoning is not caused by heavy metals, except for abdominal pain and diarrhea caused by microorganisms, the most common is rhabdomyolysis.
After screening for various poisons, it was finally diagnosed as "Huff's disease". There is no specific medicine, and it is useless to drink milk.
Huff's disease is "rhabdomyolysis of unknown cause", which is suspected to be a specific reaction caused by some algae toxins.
In addition, the concept of detoxification has no scientific basis, and it is largely a marketing concept under the guise of Chinese medicine.
After talking about heavy metals, let's talk about anti-aging in beauty beauty.
Anthocyanin does have antioxidant effect, but there are many "antioxidants" in food, such as lycopene, resveratrol, tea polyphenols and vitamin C, but it has no anti-aging effect.
At present, nothing can definitely provide anti-aging/life-prolonging effects. )
Moreover, anti-oxidation, free radicals and anti-aging are not the same. Eating antioxidants at will is even harmful to health.
In addition, the main pigment of red pitaya is beet red, not anthocyanin.
The anthocyanin content of pitaya is not very high, far less than purple potato, black mulberry, black grape and blueberry, and not as good as eggplant skin. (The content varies greatly among different varieties)
It is right to eat rich fruits and vegetables every day, one catty of vegetables and half a catty of fruit, but there is no need to emphasize one kind.
Later, Bian Xiao asked me again, is it harmful to eat too much red dragon fruit?
Good ... In fact, the biggest risk is to scare people, such as red urine (mistaken for blood in urine) and black feces (mistaken for blood in stool).
The reason is that the human body can't metabolize beet red, so it is discharged directly from the feces, and you can see the effect if you eat more at a time.
This has nothing to do with anthocyanins. What the doctor said in the screenshot is wrong. Doctors don't understand food.
Another thing to note is that although pitaya is not very sweet, diabetics need to be properly controlled and don't eat too much.
This is because there is more glucose in the sugar of pitaya, but the sweetness of glucose is lower and the sugar rises faster.