There is reason to worry about this.

Since September 2001, the cause for concern has grown dramatically.

The outcome of the climate talks in Copenhagen is a third reason for concern.

Of course, malaria is far from the only reason we worry about global warming.

The second concern is what one might call intellectual capture.

Even if there won't be a flood of environmental refugees in the near future, there's still reason to be anxious.

Another reason to be worried is that Europe faces not one crisis, but several.

The binational Colombian Panamanian base located at the border of the humanitarian zones is another big reason for concern among the communities.

This is where advocates of peace and democracy in Iran and the Middle East should find cause for worry.

At times the levels of concern grew into grave concern or extreme worry.

The reason?

The ado did not pass unnoticed.

There's no need to worry.

There's no cause for concern.

It isn't worth the trouble.

There's no reason to worry.

There's no cause for alarm.

There's no reason for concern.

There's no point in getting upset.

I was worried to death.

The main source of concern is that the low interest rates at which most European governments can currently borrow are not likely to last.

This fear of a stronger dollar is the real reason for concern, bordering on panic, in many emerging economies and at the IMF.

The real reason to worry is that India has lost international competitiveness and has been buying time by borrowing from fickle lenders.

What's the cause?

What's the reason?

Was there a reason?

The reason is simple.

These anxieties have too often been ignored.

There has always been reason for concern.

Why this explosion of concern?

Worrying too much is anxiety disorder.

Okay, there're lots of problems to worry about.

I've caused enough trouble already.

Those who warn of grave dangers if speculative price increases are allowed to continue unimpeded are right to do so, even if they cannot prove that there is any cause for concern.

Security, too, remains a serious concern.

The worries are even worse in Afghanistan and Pakistan.

Here lies the threat of unrest.

The dead bodies somehow don't seem important enough. Quetta Sikander F. Bhadera ( SikanderFayyaz) August 8, 2016

I do not want to cause you any trouble.

You've got enough to worry about.

Tom was worried sick.

Tom had good reason to worry.

I've caused everyone enough trouble already.

Tom had reason to be concerned.

There's absolutely no reason to worry.