"diminish concerns" is correct and usable in written English.
You can use it when you want to express the idea that something is reducing or lessening worries. For example, "The company's efforts to improve safety protocols have helped to diminish concerns about future accidents."
But he added that it would not diminish concerns over the department's handling of personal information.
To the degree that the labor pool is expanding, it would diminish concerns that a lack of workers will inevitably lead to an inflationary surge in employment costs.
Dissemination of evidence-based, clear, and up-to-date information on what is known and unknown about methods to reduce internal contamination, for self-protection and to diminish concerns of affected individuals.
The local procurement of foods, the authors argue, would diminish concerns over the likely presence of genetically modified (GM) foods, such as soy and corn, in the U.S. food aid basket.
An increased focus on the gold price is likely to diminish concern for a company's fundamentals, and that is not a good long-term strategy for investors.
For those of us who have lived through hurricanes in the Mid Atlantic states and Northeast, another psychological factor can diminish concern – the, "I've lived through this before" effect, a false sense of familiarity.
Positive results from testing of the mosquito legs also diminish concern about false-positive results from testing whole mosquitoes, which might contain recent bloodmeals with substantial viral content.
"It's counter-productive because it only serves to amplify concerns about the situation in Hong Kong, rather than diminishing concerns".
He started Friday and had 22 points and 4 assists, diminishing concerns about the impact of his injury.
A majority of those polled — both women and men — said they thought Mrs. Clinton would be an effective commander in chief, suggesting she has made headway in diminishing concerns that her sex would impede her from leading the nation in wartime.
With the economy chugging along, share prices approaching all-time highs again and diminishing concerns about overseas instability, "whats the reason for the Fed to cut rates?" asks Wachtel rhetorically.
