Causes. Fungal nail infections are caused by various fungal organisms (fungi). The most common cause is a type of fungus called dermatophyte. Yeast and molds also can cause nail infections. Fungal nail infection can develop in people at any age, but it's more common in older adults. As the nail ages, it can become brittle and dry.
Photo: Getty Images. Jan. 1 marked a significant cultural shift in China â starting this year, families will be able to have two children. This alters the one-child policy that was introduced in 1978 to control the countryâs population.
Related: China's one-child policy: the only child's view - in pictures. The Communist party credits the policy with preventing 400m births, thus contributing to Chinaâs dramatic economic takeoff since the 1980s.