Faulty thyroid

greekbird · 12th April 2005, 15:42

Hi y'all!
I am interested in information regarding endocrinology and diving.
To be specific, I was diagnosed with an under-active thyroid and low iron levels recently. I'm on 100mg levothyroxin and ferrous sulfate tablets at the moment. I know that the thyroid stuff in itself does not pose any issues with regards to diving..However I was told that if the dosage is too high, it could emulate the effects of a hyperactive thyroid and this may make me more succeptible to an O2 tox (ogh fun!) i am due to be tested at the end of the month again to see how i'm getting on, but any info on the accuracy of the above statements would be much appreciated.
Regards,

Janos · 12th April 2005, 15:44

Can't help I'm afraid, but I'd be interested in anything you can find out as I know someone in a similar position.

Cheers,
Janos

dteubner · 12th April 2005, 16:04

It's true that too much thryroid replacement can cause hyperthyroidism (overactive thyroid problems). The amount of thyroxine you need to take to cause problems is usually a fair bit more than 100 mcg per day, so it's probably not something you need to worry much about.

Hyperthyroidism and CNS O2 toxicity is not something I've heard about. A quick literature search has told me that if you give rats between 100 and 1000 mcg per kilogram body weight (ie 70 to 700 100 mcg tablets per day equivalent in a 70kg person) they are more susceptible to ozone pulmonary toxicity. Dunno how relevant this is

If you are otherwise OK and your check is OK I wouldn't be too fussed about it.

Dave T

Mdemon · 12th April 2005, 16:07

Would they be prepared to take you on as a research case at DDRC? Maybe they might put you in the pot to see if you are more susceptible... At least you'd know...

Just a thought...

greekbird · 13th April 2005, 09:53

Quote: (Originally Posted by Mdemon)

Would they be prepared to take you on as a research case at DDRC? Maybe they might put you in the pot to see if you are more susceptible... At least you'd know...

Just a thought...

crash test dummy for the DDRC (rather than the DFC)

dteubner
thank you, incoming green!

Mdemon · 13th April 2005, 10:58

LOL!

Have a blob...

PS Tell your old man to read his PMs!

Quote: (Originally Posted by greekbird)

crash test dummy for the DDRC (rather than the DFC)

dteubner
thank you, incoming green!

ROB DAVIE · 13th April 2005, 13:04

Quote: (Originally Posted by dteubner)

It's true that too much thryroid replacement can cause hyperthyroidism (overactive thyroid problems). The amount of thyroxine you need to take to cause problems is usually a fair bit more than 100 mcg per day, so it's probably not something you need to worry much about.

Quote: (Originally Posted by dteubner)

Hyperthyroidism and CNS O2 toxicity is not something I've heard about. A quick literature search has told me that if you give rats between 100 and 1000 mcg per kilogram body weight (ie 70 to 700 100 mcg tablets per day equivalent in a 70kg person) they are more susceptible to ozone pulmonary toxicity. Dunno how relevant this is

If you are otherwise OK and your check is OK I wouldn't be too fussed about it.

Dave T

Doc T,

Thanks for that note, Doc. That means for myself, I'd have to swallow two bottles of pills every day. (...only one for the other guys...

) You are a really handy guy to have around!

Rob

12th April 2005, 15:42	#1 (permalink)
greekbird in lurking Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: tidying the spare room Posts: 25	Faulty thyroid Hi y'all! I am interested in information regarding endocrinology and diving. To be specific, I was diagnosed with an under-active thyroid and low iron levels recently. I'm on 100mg levothyroxin and ferrous sulfate tablets at the moment. I know that the thyroid stuff in itself does not pose any issues with regards to diving..However I was told that if the dosage is too high, it could emulate the effects of a hyperactive thyroid and this may make me more succeptible to an O2 tox (ogh fun!) i am due to be tested at the end of the month again to see how i'm getting on, but any info on the accuracy of the above statements would be much appreciated. Regards, __________________ greekbird Out of my mind....back in five minutes
(Offline)

12th April 2005, 15:44	#2 (permalink)
Janos "Two Sheds" Current Rebreather/s: Classic Kiss Other Rebreather/s: Classic Kiss Join Date: Feb 2005 Location: East Surrey Posts: 601	Can't help I'm afraid, but I'd be interested in anything you can find out as I know someone in a similar position. Cheers, Janos __________________ You can lead a horse to water but you can't climb a ladder with a large bell in both hands - Vic Reeves www.hellfins.com/shed
(Offline)

12th April 2005, 16:04	#3 (permalink)
dteubner Pedant Current Rebreather/s: Sport Kiss Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: Adelaide, Australia Posts: 217	It's true that too much thryroid replacement can cause hyperthyroidism (overactive thyroid problems). The amount of thyroxine you need to take to cause problems is usually a fair bit more than 100 mcg per day, so it's probably not something you need to worry much about. Hyperthyroidism and CNS O2 toxicity is not something I've heard about. A quick literature search has told me that if you give rats between 100 and 1000 mcg per kilogram body weight (ie 70 to 700 100 mcg tablets per day equivalent in a 70kg person) they are more susceptible to ozone pulmonary toxicity. Dunno how relevant this is If you are otherwise OK and your check is OK I wouldn't be too fussed about it. Dave T
(Offline)

12th April 2005, 16:07	#4 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	Would they be prepared to take you on as a research case at DDRC? Maybe they might put you in the pot to see if you are more susceptible... At least you'd know... Just a thought... __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
(Offline)

13th April 2005, 09:53	#5 (permalink)
greekbird in lurking Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: tidying the spare room Posts: 25	Quote: (Originally Posted by Mdemon) Would they be prepared to take you on as a research case at DDRC? Maybe they might put you in the pot to see if you are more susceptible... At least you'd know... Just a thought... crash test dummy for the DDRC (rather than the DFC) dteubner thank you, incoming green! __________________ greekbird Out of my mind....back in five minutes
(Offline)

13th April 2005, 10:58	#6 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	LOL! Have a blob... PS Tell your old man to read his PMs! Quote: (Originally Posted by greekbird) crash test dummy for the DDRC (rather than the DFC) dteubner thank you, incoming green! __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
(Offline)

13th April 2005, 13:04	#7 (permalink)
ROB DAVIE Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: HOUSTON, REPUBLIC OF TEJAS Posts: 1,120	Thyroid and high PPO2 Quote: (Originally Posted by dteubner) It's true that too much thryroid replacement can cause hyperthyroidism (overactive thyroid problems). The amount of thyroxine you need to take to cause problems is usually a fair bit more than 100 mcg per day, so it's probably not something you need to worry much about. Quote: (Originally Posted by dteubner) Hyperthyroidism and CNS O2 toxicity is not something I've heard about. A quick literature search has told me that if you give rats between 100 and 1000 mcg per kilogram body weight (ie 70 to 700 100 mcg tablets per day equivalent in a 70kg person) they are more susceptible to ozone pulmonary toxicity. Dunno how relevant this is If you are otherwise OK and your check is OK I wouldn't be too fussed about it. Dave T Doc T, Thanks for that note, Doc. That means for myself, I'd have to swallow two bottles of pills every day. (...only one for the other guys... ) You are a really handy guy to have around! Rob __________________ [SIZE=2]"CC Rebreathers will become a viable part of tech diving [U]WHEN PIGS FLY[/U]!!"--GI3[/SIZE]
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode