The phrase 'an issue of increasing concern' is correct and usable in written English.
You can use it whenever you want to emphasize that a certain problem is becoming more of a concern or a worry over time. For example: "Climate change is becoming an issue of increasing concern in the scientific community."
Invasive species have become an issue of increasing concern in recent years.
Your letter (12 March) about the risks associated with the deep cuts in mental health funding highlighted an issue of increasing concern to me.
Simon Evans, chief executive of the Air Transport Users Council, said add-on charges imposed by low-cost airlines were becoming an issue of increasing concern.
Mitigation of the UHI effects via the configuration of green spaces and sustainable design of urban environments has become an issue of increasing concern under changing climate.
That is an issue of increasing concern in Washington, which often appears to be going it alone without much visible support from the estimated 300,000 Iraqis in the United States or the 4 million exiles worldwide.
Gambling is an issue of increasing concern for social conservatives, however, and Republican politicians could eventually find it more difficult to balance their need to appeal to their conservative base with their desire to accept the casino industry's largess.
As a global issue of increasing concern, MDR leads to inadequate treatment and poor prognosis of leukemia patients.
In many European mountain regions, agricultural land abandonment and the related consequences for the environment are issues of increasing concern.
From a clinical viewpoint, the stiffness of the standard locked plating constructs and complications observed with their use are issues of increasing concern[ 8, 9].
Solid waste management (SWM) has become an issue of increasing global concern as urban populations continue to rise and consumption patterns change.
The identification of local and remote particulate pollution sources, as well as the understanding of the factors determining the spatial and temporal variability of the particulate matter in urban areas is an issue of increasing public concern, since the above actions are absolutely essential for the design of effective particulate pollution control strategies.
