Young people, because they do not drink enough water and are always running around playing.
There are different diseases that are more common in certain age groups, but anyone can be susceptible to any of them. The study of diseases in relation to age is called gerontology.
Men 20-45 years of age
All humans are equally susceptible to louse infestation.
In most third world countries, children are the most affected those above five years of age, adolescents and young adults.
Personally - I think no. At that age they have no concept of the cost of using a mobile. Additionally, they are more susceptible to being bullied or mugged for their phone.
infants
Really any age group does, but it is more typical to older people.
Children in the pre-school or early school years are most susceptible to CVS, although it can appear anywhere from infancy to adulthood
11-24
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It can happen at any age. The most significant contributing factor is dehydration.
age hardening is the result of precipitation of the one or more compounds whose solubility decreases with decrease temperature from a solid solution. For each alloy susceptible to aging, there is a unique range of time-temperature combinations to which it will respond to age hardening.