"feeding concerns" is correct and usable in written English.
You can use it to describe worries or anxieties that arise due to a particular situation. For example: The lack of available food is feeding concerns about the security of the local population.
After more than a year of investigating Mr. Corzine, regulators and criminal investigators have not filed any charges, feeding concerns that Mr. Corzine will escape unscathed.
A number of French start-ups, including PriceMinister, an e-commerce business, and SeLoger, a real estate site, have been acquired by foreign companies, feeding concerns about France's ability to hold its ground in the digital world.
Even before the San Bernardino killings, the Obama administration had drawn fire from political conservatives for its plan to allow 10,000 refugees from Syria's civil war into the United States, feeding concerns about anti-Islam sentiments.
All told, the incident lasted about six hours, feeding concerns about resurgent European anti-Semitism in the process.
They found that 92% of mothers reported breast-feeding concerns at the peak time of difficulty (their child's third day of life) -- including problems feeding, concerns about milk supply, concerns about their ability to breast-feed and pain. .
Stocks briefly pared gains as the Egan-Jones Ratings Company reduced its rating on France's government debt, feeding concern about contagion from the debt crisis.
Most British savers retiring between July and September last year fully cashed out their pension pots after rule changes, the financial markets regulator said, feeding concern they are not seeking financial advice.
The greatest sources of uncertainty concerning the application of the metabolizable protein (MP) system for ruminant feeding concern assumptions as to the extent and efficiency of synthesis of microbial protein (MiN) both from quickly, slowly and undegraded forms of dietary nitrogen (QDN, SDN and DUN, respectively) and from recycled endogenous nitrogen.
And it fed concerns that the Senator lacks the instincts to win a 24/7, spare-no-attack election.
The dollar fell against the euro, as declines in United States stocks fed concerns that a bulging trade deficit leaves the dollar vulnerable.
That sense, shared by others, has fed concerns that one way the crisis can turn is toward a full-scale war, however that becomes defined.
