But it is believed they could potentially trigger ailments among some people at a psychological level.

An Ontario Superior Court judge declares the 2011 federal election results in the riding of Etobicoke Centre to be "null and void", potentially triggering a by-election.

Any medication may potentially trigger anaphylaxis.

"We could potentially trigger a small increase in ocean temperatures, which triggers methane release," said Ruhl.

Different types of alcohol could potentially trigger cluster headaches.

A similar report in 2005 linked roller coasters and other thrill rides with potentially triggering abnormal heart conditions that could lead to death.

WARNING: This video has been identified by Epilepsy Action to potentially trigger seizures for people with pho...

In such a worst case scenario, the debris can potentially trigger a catastrophic engine shutdown, which in turn could lead to the loss of the crew and the shuttle.

Eating a big meal particularly a high-fat one could potentially trigger a heart attack.

Changes in sleep can cause chemical changes in the brain, potentially triggering mood episodes.