How does SYMBICORT increase the risk of asthma-related death?

How does taking too many sleeping pills increase the risk of death, especially in healthy people?

• http://www.usnews.com/news/articles/2012/02/27/study-popular-sleeping-pill-ambien-linked-to-increased-death-rate?page=2 I'm especially interested in a relationship being established that is actually enough to make a significant difference in the statistics (they say that deaths from all causes increase)

• Answer:

  Depressed CNS. heart rate slows down, breath stops - now you cross over.  "Sanofi believes the limitations of the analysis go further than what the authors indicate in the article and that the conclusions drawn based on the data presented are highly questionable," the company said in a statement. "Ambien has more than 17 years of real-world experience and is safe and effective when prescribed and taken according to its labeling." If we had to contribute it to something aside from just overdose, how about grogginess, poor habits of unhealthiness, poor sleep, poor quality of sleep, deterioration of working memory due to lack of rest, depression, poly drug abuse/use. Meaning, when you are walking through NYC and you haven't slept and you don't see that car coming...plus you are extra groggy from the medicine...