American allergists carried out a research to find out New Year’s trees influence on human health. They proved that forest beauties secrete substances, extremely harmful for highly allergic individuals.

This especially concerns trees, bought long before the New Year. During first three days after you brought a tree at home, it secretes 800 spores of soil for a square meter – this dose is just slightly smaller than allowable one.

However, on the 4th day quantity of secreted spores reaches 5000 – such concentration has an additional load on airway mucous membrane and affects highly allergic individuals and asthmatics health quite negatively.

Experts advise keeping a New Year’s tree at home for no longer than 4 days.

Besides, various holiday aromatizers and sprays on artificial tree are not also recommended, as they affect health very negatively.