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Originally Posted by cmorioles
I'm not doubting that. I'm just saying this "damage" isn't as severe as people let on.
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But it is. What makes you think it is not? We have thousands of necropies on horses that shows the damage. We have three centuries of horsemen writing about horses that bleed and don't have wind and quit and can't work.
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If it was, how do you explain horses racing successfully over 100 times in a career?
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What are you specifically talking about? Horses that raced before lasix? A century ago? Two centuries ago? Other methods were used to control bleeding before lasix. Many things were tried.
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While Lasix does help sometimes with EIPH (nobody is denying that),
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The hard science is that furosemide has about a 97% effective rate with horses that have been diagnosed with EIPH.
Current science: Virtually all TB racehorses have been found to have evidence of bleeding, thus we consider that rate of EIPH to be 100% in the TB race horse for practical purposes.
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it isn't a cure all and I think there are some negative effects as well.
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What negative affects concern you?
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It certainly isn't the only reason horses don't last these days, but it is one of them.
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There is zero scientific evidence that using furosemide shortens a horses career. There is hard proven scientific evidence that says use in race horses lengthens that career by diminishing lung damage.