For example, taking high doses of iron supplements can lead to nausea and vomiting, but sometimes these side effects can be avoided by taking smaller doses a few times a day. Vitamin C may cause nausea, vomiting, stomach cramps and headache, but these symptoms are less likely with low doses.Other nutrients that may cause nausea or an upset stomach include niacin (vitamin B3), vitamin A and vitamin D. Talk to your doctor.itamin C may cause nausea, vomiting, stomach cramps and headache, but these symptoms are less likely with low doses. Other nutrients that may cause nausea or an upset stomach include niacin (vitamin B3), vitamin A and vitamin D. Talk to your doctor.
A bodies internal temp can only survive up to 108F it starts to die around 105F which is when the proteins inside the body begin to cook apart. As far as the coldest the human body can get is in the 70'sF and potentially lower depending on the time spent at the temp.'m not sure but I believe once an external temperature above 212 degrees is reached a human will begin to die because of their internal fluids simply starting to boil, remember we are 70-90% water.. The coldest temperature your body can get before shutting down and going into hypothermic shock is 89 degrees.
In terms of the external temperature that humans can withstand, some fire fighters are able to survive in temperatures of up to 200 degrees C while wearing protective clothing.