The phrase "a topic of growing concern" is correct and usable in written English.
It can be used when discussing issues or subjects that are increasingly becoming important or alarming to people or society.
Example: "Climate change has become a topic of growing concern among scientists and policymakers alike."
Alternatives: "an issue of increasing worry" or "a matter of rising importance".
Such decisions have become a topic of growing concern among doctors and researchers, who are increasingly focused on treatments to prevent cancer in high-risk patients.
The study underscores the kinds of health disparities that exist within the United States — at a time that the country's overall performance on health measures has become a topic of growing concern.
"IFE is now running additional tests to ensure that the final report is accurate". FHA's financial health has been a topic of growing concern as the agency's loan volume exploded and its default rate climbed.
Sustainability is a topic of growing concern for many Americans as the value of renewable energy sources becomes evident.
One example of this is systematic review evidence in relation to weight management or obesity; a topic of growing concern to maternity care providers and yet the evidence from systematic reviews is limited in terms of quality.
Security of electricity supply has been an important topic of growing concern in the United Kingdom as the margin of supply over demand tightens and the risk to security of supply widens.
It's definitely an issue of growing concern".
At a time when great wealth and inequality are topics of growing concern, "The Richest Man Who Ever Lived: The Life and Times of Jacob Fugger," by Greg Steinmetz, a former journalist turned securities analyst, introduces an obscure but fascinating business titan.
This workshop, also supported by the Canadian Social Sciences and Humanities Research Council, will feature interdisciplinary research by an international group of scholars addressing the theme of labour and migration in the Middle East.This topic is of growing concern given the enormity of human rights violations that can and do occur against migrant labourers in the region.
Biomimetic caudal fin propulsion systems are a topic of growing interest recently.
Recently, the way to perform secure compressive sensing (SCS) has become a topic of growing interest.
