"increasingly aging population" is correct and can be used in written English.
For example, "A recent report showed that the US is dealing with an increasingly aging population."
With an increasingly aging population, we don't have a choice.
An increasingly aging population implies an increasing prevalence of osteoarthritis (OA) of hip or knee.
With an increasingly aging population, the country is running out of nurses for all the old folks let along people to pay attention to them.
The treatment of localized prostate cancer is expected to become a significant problem in the next decade as an increasingly aging population becomes prone to developing the disease.
The rise in the number of musculoskeletal disorders (MSDs) due to an increasingly aging population has led to a growing demand for medication to prevent and treat these diseases.
In the past decades, the incidence of AKI has suffered an increase and has been related to multiple factors such as an increasingly aging population, increasing number of comorbidities of the hospitalized population, increased prevalence of chronic kidney disease and diabetes, and the liberal use of intravenous contrast agents for imaging and cardiovascular intervention procedures [39].
With a growing and increasingly ageing population, the social care workforce is under pressure to meet the challenges of the future.
This is particularly pertinent to Japan, which has an increasingly ageing population and a very great need for higher labour force participation rates among women.
The figures also project an increasingly ageing population with the average age increasing from 39.7 years old in 2012 to 42.8 by mid-2037.
"With an increasingly ageing population, it should be a key part of medical professionalism to guarantee that older patients are treated with the care and respect they deserve".
The ONS also revealed the extent to which Britain will be made up of an increasingly ageing population over the next two and a half decades.
