I honestly haven't done any research on it at all, however I eat a very high salt diet now. (no processed foods, just adding a lot of salt to the pot and at the table) This is because I've had low blood pressure all my life, (as have my mother and sister), to the point that as a child and teen, I thought that blacking out (losing vision for 15 seconds or so, becoming dizzy, feeling faint, but not quite losing conciousness) when I stood up was normal. (BTW, we ate very low salt at my house growing up). When I keep properly hydrated, and eat a lot of salt, I don't have any problems with this, but when I eat less salt (even if I'm fully hydrated), I do black out when I stand up. So I salt to taste. I think that for most people, salting homemade food to taste is not at all dangerous, (though for people who already have high blood pressure and heart disease it might be) the danger only lies in excessively salted processed foods (which might not taste salty.)