Ketamine can cause fatal effects in the brain due to a lack of control of motor reflexes. It can cause a person to not be able to feel anything in a sort of drug-induced paralysis. This could cause a person to black out and not be able to handle something like driving a car.
No. It is an inert gas. But, if you only breathe helium, you may deprive your brain of oxygen, and that can be fatal.
Yes, one of the fatal side effects of using Permethrin is trouble breathing and wheezing. This could cause a person that has asthma to go into an attack.
Severe trauma is the most likely to be immediately fatal. However, any condition that affects the brain can cause death.
Yes, it can be fatal.
When taken in the recommended dilute form, no side effects have been reported. However, concentrated quantities of the venom cause paralysis and hemorrhaging, and can be fatal.
the element mercury can cause brain damage of kidney damage which could be fatal
I would say it is very rare. The majority of deaths from ketamine involve people who take some and then go swimming or take a bath. Ketamine can be fatal if combined with alcohol, but for the most part ketamine is a relatively mild drug (as far as health concerns) compared to many other drugs. It actually increases cell respiration, meaning you're body is working better than normal while on ketamine. Also to note, ketamine is still used as an anesthetic for children in over 200 hospitals in the United Sates as of 2006. I could cite my source but you can easily google it.
Excessive alcohol use can cause a condition or disease called cirrhosis. It can be fatal.
Fatal
yes, in fact it can in some cases be deadly some dog food is made of cow, foods with cow brain are dangerous because of "mad cow disease" this effects the brain and is fatal.
It can cause severe dehydration which can be fatal.
Damage to the cerebral cortex is least likely to be fatal; damage to the medulla is most likely to be fatal.