[nemo846]

> As an example my son when he was young he liked carrot juice, so give it to him daily, when we went to the doctor she noticed he had is skin colored and told us to stop, I had no idea that too much carrots can be bad

Well in your son’s case, it’s not harmful per se according to Wikipedia, Carotenosis is harmless - you will just look orange.

https://en.wikipedia.org/wiki/Carotenosis

[Tor3]

As another poster said, it's all about the dosage. Anything can be a poison. Even water - there have been several cases of people dying from drinking too much water, some side effect of taking ecstacy - they felt thirsty however much they were drinking.

Vitamin A is a classic: Too little, and you get blind and your feet start bleeding when you walk. Too much, and you get blind and your feet start bleeding when you walk.

[scns]

https://en.wikipedia.org/wiki/Hypervitaminosis_A

since one egg yolk contains around 30% of the Vitamin A you need for a day, i limit my daily consumption to 3.

[logfromblammo]

I'm going to go out on a limb, just to be contrarian, and say that no amount of perfluorodecalin is poisonous. You can immerse yourself in it, fill your lungs with it, fill your entire digestive tract with it, and replace a significant amount of your blood with it. It is completely inert to biology, and is readily permeable to atmospheric gases.

[0] https://en.wikipedia.org/wiki/Perfluorodecalin

[simion314]

Thanks, I forgot the details since this happened 10 years ago, my point stands that the juice sellers did not warned about this side effect.