As morbid as the subject of death is, it's an inevitable part of life that's undeniably fascinating. The decomposition process of the human body alone is interesting enough to study for hours (or maybe not). The creepy facts ahead may seem a bit disturbing, but you will learn a few things. If you're in the mood for some unsettling education, check out the 20 facts ahead about death.

1. Botulinum toxin type H (cosmetically known as Botox) is the deadliest toxin known to man [1]. It causes death by paralysis and has no antidote as of yet.
2. Heart disease is the leading cause of death [2] in the world.
3. The leading cause of accidental death [3] in the US is drug overdose.
4. You have a one in seven chance of dying from cancer [4] or heart disease, and a 1 in 113 chance of dying in a car accident.
5. Mosquitoes are considered the deadliest animal [5] in the world because they're able to transmit fatal diseases.
6. Over 151,600 people die every day [6].
7. Over 55.3 million people die each year [7].
8. The tradition of wearing black [8] while mourning can be traced back to the Roman Empire.
9. The Egyptians were the first to develop embalming [9], or preservation of corpses.
10. Physician-assisted suicide is legal [10] in California, Montana, Oregon, Vermont, and Washington.
11. Brain cells begin to die a few minutes [11] after your heart and circulation stop.
12. The top skin layer of a dead body starts to slip off after seven days [12], and its skin, hair, and nails begin to loosen after three to four weeks.
13. Administering coup de poudre (powder strike) and hallucinogenic drugs like Datura into a person's bloodstream can turn a person into a zombie [13]. The person undergoes a deathlike state and can be controlled by the administrator.
14. The mummy of Rameses II, the third Egyptian pharaoh, was not allowed into Paris for treatment without a passport under French law. They had to issue him a passport [14] even though he's been dead since the 12th century.
15. Hearing may be the last sense to stop [15] after death.
16. The consumption of preservatives in foods does not slow down the decomposition process [16].
17. Over 200 dead bodies can be found on Mount Everest [17] and they're used as trail-markers by hikers.
18. A corpse's body stiffens up two to three hours after death (rigor mortis [18]) but then returns to a flaccid state about two days later.
19. For every 1,000 people, there are twice as many births than deaths [19].
20. Aokigahara, or the Suicide Forest [20], is a popular spot in Japan where people go to die.