Cancer research highlights environmental toxins and dietary compounds

Recent scientific studies have identified distinct factors influencing cancer risk and progression. Researchers at the University of San Diego found that carcinogens from tobacco smoke can persist in residential environments for over six months. Even after individuals quit smoking, harmful substances like nicotine and NNK remain embedded in walls, furniture, and carpets, leading to continued exposure for all residents in the household.

In a separate development, scientists at Erlangen University Hospital in Germany have discovered that quercetin, a natural flavonoid found in onions, citrus fruits, and capers, may inhibit the growth and spread of lung cancer cells. Laboratory tests conducted by the research team showed that quercetin can simultaneously target multiple biological processes, significantly slowing tumor cell division and nearly halting cell migration in experimental models.