The opinion of virtually every health care economist I have ever met is that those two things are causally related.
But still there is one thing you've kept behind, causally perhaps, and without any harm.
The taking of food and a certain feeling of strength are causally connected.
If this is the case, then they are causally independent of ourselves; if not, not.
The probability is that they are causally connected, but science has not yet discovered how.
To know that one kind of thing is causally independent of another, we must know that it actually occurs without the other.
It encouraged a habit of thought that divided experience into specialized units and organized these serially and causally.
The two processes are closely though not causally connected.
In the Treatise, Hume raises the broader question as to our right to postulate that events must always be causally determined.
An obsession may be of idiopathic origin, or it may be causally connected with some particular incident, sensation, or emotion.