Dog Cancer 4X more likely if low Vitamin D
New Study Shows Dogs with Low Vitamin D Are At Risk For Cancer DogsNaturally

Some other factors that are known to decrease the ability to convert dietary vitamin D to 25-VitD:
Polyunsaturated fats can decrease the bioavailability of vitamin D
Fluoride (which is present in many pet foods and water supplies)
- decreases magnesium, which is an essential cofactor for vitamin D
Strong magnetic fields can reduce vitamin D levels
PCBs increase the risk of deficiency by 3%
Roundup (glyphosate, which is present in foods and the environment) decreases vitamin D
Flame retardants (which are 10 times higher in dogs than humans) inactivate vitamin D
Low magnesium in foods
Spay/Neuter (spayed females have 10% less 25VitD than intact females and neutered males have 30% less than intact males )
Kidney disease (prevents the conversion of 25VitD to the usable form of vitamin D)
Exposure to DDT and other pesticides
Certain drugs (as well as St Johns wort and mineral oil) can consume or block vitamin D
The effect of diet on serum 25-hydroxyvitamin D concentrations in dogs
Huge differences in vitamin D levels after eating different brands of dog food


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See also Vitamin D Life
Dog Cancer (hemangiosarcoma) is rare if more than 100 ng of vitamin D – July 2014
Veterinary and D category listing has items along with related searches
Hospitalized cats 8X more likely to die if low vitamin D (Vit. D helps humans too) – May 2015
Senior pets rejuvenated with vitamin D
- Yes, it appears to be OK to supplment your- dose is a multiplier of pet weight
Dogs – like humans – with IBD were low on vitamin D – July 2011
Proofs that vitamin D works 70+ Random Controlled Trials - Humans
43 reasons for Vitamin D deficiency
- 20 of the 35 reasons for humans are new in last few decades
- 22 of the reasons apply to cats and dogs
- Half of dogs now get cancer, it used to be just 1 percent (probably low Vitamin D
See also:
There is a growing body of evidence that low stores of vitamin D are associated with a wide range of diseases in dogs and cats
📄 Download the PDF from Vitamin D Life
refers to 13 studies - 2015?