Don't be so sure about that. When I first heard about the connection of D3 with the immune system, I asked a friend, who happens to be a cardiologist, about it. He said vitamin D prevents rickets, that's all. And an overdose produces arrhythmia, so be careful with the supplements. Indeed, that's the conventional wisdom found in text books.
According to the internet, a healthy immune system needs much higher levels of vitamin D than those necessary for a functioning calcium metabolism, and a D3 overdose is only bad if you have insufficient levels of vitamin K2. I don't know what to think about all of that. After all, my representative study with a sample size of one and no controls yielded no significant results.
Don't be so sure about that. When I first heard about the connection of D3 with the immune system, I asked a friend, who happens to be a cardiologist, about it. He said vitamin D prevents rickets, that's all. And an overdose produces arrhythmia, so be careful with the supplements. Indeed, that's the conventional wisdom found in text books.
According to the internet, a healthy immune system needs much higher levels of vitamin D than those necessary for a functioning calcium metabolism, and a D3 overdose is only bad if you have insufficient levels of vitamin K2. I don't know what to think about all of that. After all, my representative study with a sample size of one and no controls yielded no significant results.