Vitamin D3 oversupplementation... Heart problems?

[lemonadedildow]

Okay, so I've read tons about how D3 is suppose to help with cancer, heart problems, etc... Sounded, too good to be true.. I ran into a study where rats given a lot of D3 actually had cardiac necrosis, and died... Pretty scary? I also found another study dealing with chicken broilers... Pretty much same thing happened, heart problems > death..

Here is the study on Vitamin D3 on rats causing cardiac necrosis. They were given 100,000 IU, 3x a day, for only 3 days? I know rats metabolism works different, how much would this be equivalent to in a human? Any guess?
http://www.sciencedirect.com/science...b&searchtype=a

Here is full PDF
http://www.google.com/url?sa=t&sourc...zgnD6w&cad=rja

Here is the one on chicken broilers
http://www.sciencedirect.com/science...c&searchtype=a

Sorry for the long, stupid URL's ... Don't know how to shorten.


Here is a google search for vitamin d3 being good for the heart
http://www.google.com/#sclient=psy&h...2bf32b5c0e0691

Scary? I was going to take 50,000 IU twice a week for so called "benefits", now I'm scared to touch this stuff...

[Valenzuelatech]

300,000 IU is a ridiculously high dosage of cholecalciferol for human consumption, exponentially more so for a rodent given the difference in body mass.

[_Smitty_]

300,000 IU is a ridiculously high dosage of cholecalciferol for human consumption, exponentially more so for a rodent given the difference in body mass.

ridiculous is an appropriate descriptor considering it's fat soluble and the unusable excess is stored.

[mobikwa]

I ran a similar study, I supplemented 10,000 gallons of water per day for 3 days to 5 otherwise healthy individuals. They all did, indeed, died. There you have it folks, water will kill you.

[andrewwww]

ridiculous is an appropriate descriptor considering it's fat soluble and the unusable excess is stored.

im usually intaking 6000-8000iu per day is that safe?

[Yates Row T]

im usually intaking 6000-8000iu per day is that safe?

more than likely that is just fine. ever had ur 25-OH drawn?


I was supplementing with 8000iu/day and my 25-OH just came back LOWER. i was at 66, then dropped to 58 NOW 50.

Makes no sense. Upped to 12000iu/5x/week

[BobisMighty]

This is over sharing, but I noticed that when I had too much vitamin d3, i had....bowel problems.

[Sldge]

im usually intaking 6000-8000iu per day is that safe?

Until you are out in the sun regularly that is definitely fine. 5000-10000 is going to be a good amount for most people.