No, feel free to eat. If it really caused cancer, this product would not have obtained QS certification, and the country would not allow it to be sold, and it would have been seized long ago. Moreover, Ming Liezi is called mountain vermicelli in Taiwan and is delicious when added to milk tea, shaved ice and sugar water. The medicinal effects of Mingliezi are also recorded in the Compendium of Materia Medica, so there is really no need to worry that those are just rumors.