One question is whether the link is a result of tobacco toxins directly affecting the scalp, or of smoking's causing severe disease that speeds aging.
The study lasted just six months, and there is concern that growth hormone may have terrible long-term effects -- in animals it can actually speed aging and reduce the life span, and scientists fear it could promote the growth of cancers.
Numerous studies suggest that extra growth signals can speed up aging.
Baccarelli's research suggests that air pollution can speed cognitive aging by as many as five years, potentially contributing to the etiology of neurodegeneration.
Similarly, another study found that unhealthy habits like drinking sugary sodas speed up aging.
Smoking is linked to many health problems, such as lung cancer, but it also speeds up aging.
In accordance with the initial analysis, a shift to slower process speeds with aging was again found (Fig. 3D F).
Alternatively, they could activate the molecule and speed up ageing.
The study reveals that gender discrimination reduces the size of the population and the number of laborers, accelerates the speed of aging, and exacerbates the marriage squeeze.
This paper will start by comparison of the level and the speed of aging process between China and other countries in the world.
It may also be a contributing factor in the reduction of turning speed with aging.
