Study of British and Finnish researchers have identified a gene that is associated with a 35% increase in the probability that one who has need of orthodontic treatment at age 30.
According to research conducted by scientists at Imperial College London and the Universities of Bristol (UK) and Oulu (Finland), the teeth of babies with certain genetic variants tend to appear later and are more likely to require braces.
To reach these conclusions, published in the journal PLoS Genetics, examined the genetic code of 6,000 individuals from whom data were available from fetal development through adulthood. (more…)
The study included 15 486 non-smokers, between 65 and 74. All lived with their husbands and had attended one of 18 health centers for elderly in Hong Kong between 2000 and 2003. One in four lived with a smoker.
A new study, published in ‘Proceedings of the National Academy of Sciences’ ( ‘PNAS’), warning of what he calls “third-hand smoke,” ie, “residual [...] that nicotine has been absorbed by certain areas. It seems that it reacts with nitrous acid present in the environment and, as a result of this, form a kind of nitrosamines which are carcinogens. 