Half of dogs now get cancer, it used to be just 1 percent (probably low Vitamin D)
More cancer and other health problems if dogs have <100ng/ml of Vitamin D
- Dog Cancer (hemangiosarcoma) is rare if more than 100 ng of vitamin D – July 2014

- "black triangles represent cancer"
Overview Veterinary and vitamin D
No consensus on Vitamin D from dog fur
Recommendations of IUs of Vitamin D per kilograms of dog weight
Cows 70 ng, Monkeys 82 ng,
- 50 ng to 300 ng
Dogs – like humans – with IBD were low on vitamin D – July 2011
Dog Cancer 4X more likely if low Vitamin D – Nov 2015
- Includes Vitamin D level in blood vs brand of dog food

Companion animals (dog, cats) need vitamin D too – March 2016
Hospitalized cats 8X more likely to die if low vitamin D (Vit. D helps humans too) – May 2015
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
Comments by Henry Lahore, founder of Vitamin D Life
- There are 160 categories in Vitamin D Life
- Veterinary was the first category made - it now has items
- Vets for farm animals were about 20 years ahead of human doctors to realize the importance of Vitamin D
- Vets for farm animals are paid to keep the animals healthy - so they are proactive
- Vets for companion animals are paid to treat sick animals, just as doctors are only paid to treat sick humans
Dogs need > 100 ng to be healthy
I suggest that you provide your dog with Vitamin D - by one of the following
- Supplement - daily or weekly
- Allow dog access to noon-day sun ("free range") on case it is correct that a dog can get vitramin D from its fur
- Allow dog access to UV indoor light (available in many pet stores)
- Blood spot tests which can be mailed in are available for human blood. (approx $55)
- The test might work for canine blood as well
- My guess is that $20 of vitamin D for the entire life of the dog will reduce the risk of getting Cancer by at least 3X
- $20 for Vitamin D vs $1,000 Cancer average (assuming $3,000 for Cancer and 1/3 Cancer rate)
- Recommended Vitamin D levels for humans keep on rising
- US Govt recommend 20 ng,
- Consensus of researchers in 2010 said 30 ng-100 ng
- Debate about 50 ng: Is 50 ng of vitamin D too high, just right, or not enough
- I follow the lead of many successful vitamin D interventions and have 100 ng
- A very successful Vitamin D intervention for Multiple Sclerosis targets 150 ng
See web
GreenMed Info March 2018 (link broken)
- “Just 50 years ago, 1 in 100 dogs got cancer. Today it is a staggering 1 in 1.65 dogs.”
- “Dogs have the highest rates of cancer of any mammal on the planet. “
- “Cats aren’t far behind. About 1 in 3 cats will get cancer.”
- The Truth About PET Cancer 7 part documentar,y April 2018
- Dogs are affected by more forms of cancer compared to other companion animals. According to The Veterinary Cancer Society, cancer is the leading cause of death in 47% of dogs, especially dogs over age ten, and 32% of cats. Dogs get cancer at about the same rate as humans, while cats get fewer cancers.
- Veterinary Diagnostics Lab
- What You Need to Know About Pet Cancer PetsPlusUs 2015

- click on thumbnail to see infographic
- New Study Shows Dogs with Low Vitamin D Are At Risk For Cancer Dogs Naturally Magazine
- “Spay/Neuter (spayed females have 10% less 25VitD than intact females and neutered males have 30% less than intact males)”
- Spay/Neuter associated with increased Cancer on many site on the web
- perhaps due to lowered Vitamin D levels
- 4,000 IU/kilogram of dog weight (10kg dog = 25 lb = 40,000 IU)
- Note the lethal dose of Vitamin D for dogs is much much higher
- Vitamin D deficiency & critical illness: is your dog at risk? May 2018
- Founder of Vitamin D Council gives his 25 lb dog 1,000 IU daily
- Serum vitamin D concentrations in hospitalized critically ill dogs - March 2018
- excellent - 📄 Download the PDF from Vitamin D Life
Decreased Vitamin D is just one of many possible reasons for 50X increase in Canine Cancer
Dog leash laws established in many US cities about 50 years ago
Dogs rarely get outdoors in the middle of the day (when Vitamin D can be generated by the sun)
Increased use of lawn herbicides
Introduction of GMO/Roundup in both canine and human food
- Roundup has been associated with many human diseases
Decreased Vitamin D in dog food
fewer table scraps
less D in the scraps
decreased feeding of organ meats to dogs (which had a lot of Vitamin D)
High carbohydrate diet gives dogs cancer 2017
Do “free range” dogs have a similar big increase in Cancer?


