page_title: Generation Z
section_title: Health issues
hierarchical_section_title: Generation Z / Health issues
caption_attribution_description: English: Diagram depicting Myopia - nearsightedness
context_page_description: Generation Z, or Gen Z for short, are the demographic cohort succeeding Millennials and preceding Generation Alpha. Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years. Most members of Generation Z are the children of Generation X and sometimes millennials.
  Most members of Generation Z have used digital technology since a young age and are comfortable with the Internet and social media, but are not necessarily digitally literate. Generation Z tends to be abstemious and risk-averse compared to millennials, and has a tendency to be more flexible in workplaces. However, even though it has lower rates of teenage pregnancies and alcohol and drug consumption compared to previous generations, the generation has also been characterized in the media as anxious and depressed. Some commentators attribute these effects to the generation having grown up in a time of social media, smartphones, the COVID-19 pandemic and the ensuing recession.
context_section_description: A 2015 study found that the frequency of nearsightedness has doubled in the United Kingdom within the last 50 years. Ophthalmologist Steve Schallhorn, chairman of the Optical Express International Medical Advisory Board, noted that research have pointed to a link between the regular use of handheld electronic devices and eyestrain. The American Optometric Association sounded the alarm on a similar vein. According to a spokeswoman, digital eyestrain, or computer vision syndrome, is "rampant, especially as we move toward smaller devices and the prominence of devices increase in our everyday lives." Symptoms include dry and irritated eyes, fatigue, eye strain, blurry vision, difficulty focusing, headaches. However, the syndrome does not cause vision loss or any other permanent damage. In order to alleviate or prevent eyestrain, the Vision Council recommends that people limit screen time, take frequent breaks, adjust screen brightness, change the background from bright colors to gray, increase text sizes, and blinking more often. Parents should not only limit their children's screen time but should also lead by example.
  While food allergies have been observed by doctors since ancient times and virtually all foods can be allergens, research by the Mayo Clinic in Minnesota found they are becoming increasingly common since the early 2000s. Today, one in twelve American children has a food allergy, with peanut allergy being the most prevalent type. Reasons for this remain poorly understood. Nut allergies in general have quadrupled and shellfish allergies have increased 40% between 2004 and 2019. In all, about 36% of American children have some kind of allergy. By comparison, this number among the Amish in Indiana is 7%. Allergies have also risen ominously in other Western countries. In the United Kingdom, for example, the number of children hospitalized for allergic reactions increased by a factor of five between 1990 and the late 2010s, as did the number of British children allergic to peanuts. In general, the better developed the country, the higher the rates of allergies. Reasons for this remain poorly understood. One possible explanation, supported by the U.S. National Institute of Allergy and Infectious Diseases, is that parents keep their children "too clean for their own good." They recommend exposing newborn babies to a variety of potentially allergenic foods, such as peanut butter, before they reach the age of six months. According to this "hygiene hypothesis," such exposures give the infant's immune system some exercise, making it less likely to overreact. Evidence for this includes the fact that children living on a farm are consistently less likely to be allergic than their counterparts who are raised in the city, and that children born in a developed country to parents who immigrated from developing nations are more likely to be allergic than their parents are.
  A research article published in 2019 in the Lancet journal reported that the number of South Africans aged 15 to 19 being treated for HIV increased by a factor of ten between 2019 and 2010. This is partly due to improved detection and treatment programs. However, less than 50% of the people diagnosed with HIV went onto receive antiviral medication due to social stigma, concerns about clinical confidentiality, and domestic responsibilities. While the annual number of deaths worldwide due to HIV/AIDS has declined from its peak in the early 2000s, experts warned that this venereal disease could rebound if the world's booming adolescent population is left unprotected.
  Data from the Australian Bureau of Statistics reveal that 46% of Australians aged 18 to 24, about a million people, were overweight in 2017 and 2018. That number was 39% in 2014 and 2015. Obese individuals face higher risks of type II diabetes, heart disease, osteoarthritis and stroke. The Australian Medical Associated and Obesity Coalition have urged the federal government to levy a tax on sugary drinks, to require health ratings, and to regulate the advertisement of fast foods. In all, the number 
caption: Anatomical diagram of myopia or nearsightedness.
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