The phrase "alarming changes" is correct and usable in written English.
You can use it to describe changes that are concerning or cause worry.
Example: "The alarming changes in the climate patterns have raised concerns among scientists and policymakers."
Alternatives: "worrying changes" or "disturbing changes."
Read some of the most alarming changes below: "Garner raised both his arms in the air" was changed to "Garner flailed his arms about as he spoke".
One of the most alarming changes in the welfare reform bill is the proposal to scrap disability living allowance (DLA) and replace it with a personal independence payment (PIP).
"Thus, alarming changes in the users' behavior can be detected with suitable near real-time statistics analysis tools, supported by heuristics and machine learning systems".
The connections between lifestyle factors and health have been the subject of intense research, partly motivated by alarming changes in the health landscape of industrialized societies.
Here is my story of some of these alarming changes.
What appeared as glaring and alarming changes in my appearance and behavior to my loved ones were invited adjustments to me.
It was, he said, "an alarming change" in tone.
The new season begins with an alarming change of venue: Cary Agos, Alicia's law partner, has been thrown into prison, the target of drug charges.
In the teachers' time on Nauru, the most alarming change in their students was their failure to react to the trauma they witnessed.
It was after that decision that the Saudi ambassador to London wrote that he felt there had been "an alarming change in the way Saudi Arabia is discussed in Britain".
SOS Racism said the attack was caused by an alarming change in attitudes towards Roma, which it added was "the clear result of the disgusting tensions into which our citizens have been plunged".
