Do dogs need sunlight and how much? - Page 2 - German Shepherd Dog Forums
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post #11 of 16 (permalink) Old 01-17-2019, 03:40 PM
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What might Smiling Sue's credentials be?




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post #12 of 16 (permalink) Old 01-17-2019, 04:14 PM
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SmilinSue.... Looks like she has a couple degrees in science, but none in veterinary science and wrote a book on vitamin D deficiency in people. But a credible source? mmmm.... I'm guessing that one person somewhere published this theory on vitamin D in the oils on a dog's fur and everyone else with links saying similar kind of ran with it without researching it further. If I have time later, I'll see if there is any actual science behind this.

My understanding is, as far as Vitamin D goes, dogs get it through diet, not sunlight.
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post #13 of 16 (permalink) Old 01-17-2019, 07:57 PM
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My degree is a Bachelor of Science as well. It's in mechanical design. Other than her self learning on vitamin D deficiencies, I don't see anything credible about her "knowledge" of dogs and I can't find a single other source that states anything about the fur thing.

But I do find credible, academic backed, articles stating dogs get very little from sunlight and their requirements are met by food.

Side Note: I also suffer from severe vitamin D deficiency if I don't take 5000 iu daily. It affects many things in people.
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post #14 of 16 (permalink) Old 01-17-2019, 09:15 PM
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Her BS is in foreign language/literature (she came up in a convo elsewhere).

Doesn’t necessarily mean her writings are inaccurate, but those credentials don’t give her any automatic veterinary/animal husbandry clout with me. JMO.
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post #15 of 16 (permalink) Old 01-17-2019, 09:17 PM
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@WIBackpacker - exactly!!




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post #16 of 16 (permalink) Old 01-18-2019, 10:50 AM
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This seems like a reliable source:

https://avmajournals.avma.org/doi/ab...rnalCode=javma

In short, dogs and cats to not synthesize vitamin D in their skin, and require dietary supplementation. I'm surprised a person who researched vitamin D deficiency in humans wouldn't have done some basic research to get her facts straight on this matter. Vitamin D deficiency is a real issue in humans and dogs, particularly those of us in northern climates. Which why people used to do things like drink cod liver oil.
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