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Thanks for the reply Rick and Cindy,

I'll add to your list what I've picked up in the last couple of months.

Rick Allen & Cindy Burnham wrote:
> 
> Regarding your post on narcosis: I have about 300 N.C. wreck
> dives in my log down to a depth of 200' and have discovered
> several factors which definitely affect narcosis.
> 
> 1. Experience; I used to get narced at exactly 110 but with
> practice the narcosis receded.
> 2. Hydration; being dehydrated or fatigued increases the
> narcosis.
> 3. Exertion (CO2 buildup); makes the narcosis even more severe
> - especially past about 140'.

4. Position in the water;  apparently some have found that descending feet
first 
reduces the onset and severity of narcosis

5. Descent rate;  slower descents result in reduced narcosis.  There's been
some 
debate as to whether this is because you adapt as you go or if its a real
reduction 
in narcosis severity.

6. Fatigue;  Narcosis is typically more severe when the diver is overly tired
before 
a dive.

7. Alcohol;  A hang-over is a sure fire invitation to narcosis.  I would think
that 
this is probably related to dehydration as alcohol consumption causes cellular 
dehydration which in turn results in the hang over.

> 
> As to sulphur who knows? Hope my personal experience adds to
> your knowledge. If there are other factors divers have
> discovered I'd love to know myself.

I'll let you know if I find anything out.


Sincerely,

Eric Mieczkowski

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