Tansy is often confused with mugwort in daily life, but it is worth noting that mugwort does not cause allergies, while tansy not only causes allergies but also poses a significant threat to crops, earning it the title of "public hazard weed." The specific hazards are as follows:
Tansy picture
Tansy allergy rate
According to relevant statistics, there are 14.6 million tansy sufferers in the United States every year.
There are also 800,000 people in Canada.
In the Krasnodar region of the former Soviet Union, about one-seventh of the population cannot work due to tansy disease during the flowering period of tansy.
Therefore, tansy has been classified as an international quarantine weed and a public hazard weed.
Experts warn that due to China's large population, only slightly over 10% of people suffer from pollen allergies. However, if tansy is not eliminated as soon as possible while it is spreading rapidly, the number of patients in the future will be no less than that in Europe and the United States.
Tansy's hazards
Since tansy was introduced into the three northeastern provinces of China from overseas in the 1930s, this globally harmful weed has spread to 19 provinces and cities across the country, devouring large areas of land and causing some local agricultural land to be abandoned.
The direct harm of tansy to the human body comes from the pollen it releases after flowering.
The pollen of this weed contains water-soluble proteins, which are released rapidly upon contact with humans, causing allergic reactions. It is the main pathogenic factor of autumn pollen allergies and can easily cause the harmful "hay fever."
Mild cases can cause coughing and asthma; in severe cases, it can cause emphysema, and once infected, it will recur every year and worsen each year.
Therefore, experts remind us not to touch the flowering three-lobed tansy. Three-lobed tansy also poses great harm to agriculture.
Tansy picture
Due to the strong root system and huge above-ground nutrition body of tansy, it grows aggressively and competes with crops for water and nutrients. It releases various substances that have obvious inhibitory effects on cultivated crops and wild plants, quickly overpowering local annual plants.
Symptoms of tansy allergy
When the density of tansy pollen particles in the air reaches 40-50 particles per cubic meter, the population can be infected with hay fever (autumn pollen allergy).
The clinical manifestations of patients include itching of the eyes, ears, and nose, intermittent sneezing, runny nose, headache, and fatigue. Some may experience chest tightness, shortness of breath, coughing, and difficulty breathing.
Prolonged untreated cases can also lead to pulmonary emphysema and pulmonary heart disease, causing immense suffering and even death.
Tansy plants and pollen can also cause some people to suffer from allergic dermatitis and develop "eczema" all over the body.
What to pay attention to for tansy allergy
Allergy is a disease that is difficult to cure. What should you do if you are allergic to tansy pollen?
Tansy pollen is the root cause of the allergy, so the first step is to avoid contact with tansy and pay attention to food hygiene, avoiding fish, shrimp, seafood, and spicy foods.
When you encounter tansy allergy and feel itchy, do not scratch with your hands, as it may worsen the allergic reaction.
