History Main / NoBiochemicalBarriers

25th Aug '16 6:15:15 AM ImperialMajestyXO
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** In the sequel, there's a [[OptionalSexualEncounter romance]] path for either a turian or a quarian, depending on PC gender. In the case of the quarian Tali, she actually contracts a mild allergic reaction to the male PC (but it was worth it in her opinion), while with the turian Garrus, a female PC is cautioned by the ship's doctor not to... ingest.

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** In the sequel, there's a [[OptionalSexualEncounter romance]] path for either a turian or a quarian, depending on PC gender. In the case of the quarian Tali, she actually contracts a mild allergic reaction to the male PC (but it was worth it completely WorthIt in her opinion), while with the turian Garrus, a female PC is cautioned by the ship's doctor not to... ingest.
21st Aug '16 8:28:08 PM katrinahood
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* Played straight in the ''WesternAnimation/ThreeTwoOnePenguins'' episode, "Give and Let Give". Kevin manages to gulp down a whole chocolate cupcake Michelle baked without suffering any ill effects from the theobromine.
9th Aug '16 9:44:51 AM Ripburger
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* ''VideoGame/XCom: UFO Defense'' (''UFO: Enemy Unknown'' for you Brits) both averted and played this straight. The eponymous aliens comprised many races - some were surgically altered to deal with the atmosphere, others were genetically engineered badasses, some used their [[PsychicPowers Psionic powers]] to support their atrophied body mass... and some just seem to do fine without any help. [[GameplayAndStorySegregation Including, apparently, humans on Mars without full environmental armor.]] Possibly an oversight, since by that point in the game, you should probably have all of your troops outfitted with PoweredArmor and plasma weapons.

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* ''VideoGame/XCom: UFO Defense'' ''VideoGame/XCOMUFODefense'' (''UFO: Enemy Unknown'' for you Brits) both averted and played this straight. The eponymous aliens comprised many races - some were surgically altered to deal with the atmosphere, others were genetically engineered badasses, some used their [[PsychicPowers Psionic powers]] to support their atrophied body mass... and some just seem to do fine without any help. [[GameplayAndStorySegregation Including, apparently, humans on Mars without full environmental armor.]] Possibly an oversight, since by that point in the game, you should probably have all of your troops outfitted with PoweredArmor and plasma weapons.
8th Aug '16 2:25:30 PM UmbrellasWereAwesome
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** Additionally, several Covenant species are capable of eating humans and various other species with no ill effects. Brutes especially consider humans very nice eating (at a NightmareFuel extent), and Grunts, Jackals, and Drones will happily chow down on [=POWs=] and [=KIAs=]. Heck, Grunts will occasionally advise "If hungry, eat Jackal", and one point in ''VideoGame/{{Halo 2}}'' has two Brutes wonder why they can't eat their Elite prisoner.

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** Additionally, several Covenant species are capable of eating humans and various other species (including humans) with no ill effects. Brutes especially consider humans very nice eating (at a NightmareFuel extent), and Grunts, Jackals, and Drones will happily chow down on [=POWs=] and [=KIAs=]. [=KIAs=] of almost any species. Heck, Grunts will occasionally advise "If hungry, eat Jackal", and one point in ''VideoGame/{{Halo 2}}'' has two Brutes wonder wondering why they can't they're not allowed to eat their Elite prisoner.
8th Aug '16 2:24:04 PM UmbrellasWereAwesome
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* In ''Franchise/{{Halo}}'', every alien species thus far (except for the Engineers and Hunters, who eat sludge and metal respectively) are capable of eating humans with no ill effects. Brutes, especially, consider humans very nice eating (at a NightmareFuel extent), and Grunts, Jackals, and Drones will happily chow down on [=POWs=] and [=KIAs=]. The first human to visit Sanghelios (the Elite homeworld) is served Sangheili food with no problem, although the, um, texture isn't very appetizing ("Who ate that before you?").
** The Forerunners can safely eat Earth-based food as well. It is mentioned they cannot catch diseases though.
** The reveal that [[spoiler:a species known as the Precursors was largely responsible for seeding the Milky Way with intelligent life]] might go some way to explain this, though.

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* In ''Franchise/{{Halo}}'', every alien species thus far (except for the Engineers and Hunters, who eat sludge and metal respectively) ''Franchise/{{Halo}}'' often plays this pretty straight:
** The Hunters in particular
are capable of eating humans with no ill effects. Brutes, especially, consider humans very nice eating (at a NightmareFuel extent), and Grunts, Jackals, and Drones will happily chow down on [=POWs=] and [=KIAs=]. The first human to visit Sanghelios (the Elite homeworld) is served Sangheili food with no problem, although the, um, texture isn't very appetizing ("Who ate basically anything that before you?").exists (though they seem to prefer metal).
** The Additionally, several Covenant species are capable of eating humans and various other species with no ill effects. Brutes especially consider humans very nice eating (at a NightmareFuel extent), and Grunts, Jackals, and Drones will happily chow down on [=POWs=] and [=KIAs=]. Heck, Grunts will occasionally advise "If hungry, eat Jackal", and one point in ''VideoGame/{{Halo 2}}'' has two Brutes wonder why they can't eat their Elite prisoner.
** In ''Literature/HaloGlasslands'', the first human to visit Sanghelios (the Elite homeworld) is served Sangheili food with no problem, although the, um, texture isn't very appetizing ("Who ate that before you?").
** According to ''Literature/TheForerunnerSaga'', the
Forerunners can safely eat Earth-based food as well. It Though it is mentioned that they cannot catch diseases though.
human-based diseases.
** The reveal that [[spoiler:a species known as the Precursors was largely responsible for seeding the Milky Way with intelligent life]] might go some way to explain this, though.all this.
31st Jul '16 6:53:29 PM Divra
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* Averted in Creator/JohnRingo and Creator/DavidWeber's ''Literature/PrinceRoger'' series, where, while stuck on the alien planet, a good deal of effort is spent trying to find foods close enough that their nanites can adapt them to provide what they need.

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* Averted Zig-zagged in Creator/JohnRingo and Creator/DavidWeber's ''Literature/PrinceRoger'' series, where, while stuck on series.
** Mardukan life forms are similar enough to Earth's that most of them can be at least partially digested by baseline humans, but
the operative word is ''partially''.
** For all its similarities, Marduk is still an
alien planet, and a good deal of effort is spent trying to find foods close enough particularly nasty one at that. Several key micronutrients are just not present in Mardukan life-forms, and micronutrient deficiencies are an ever-present threat.
** The titular prince and his bodyguards have an easier time handling nutrient deficiencies
that their nanites can adapt civilian auxiliaries because they have genetic modifications and nanite packages tailored to help them in exactly this type of situation. However, even their nanite packages can't create complex things like vitamins out of base elements.
** Some Mardukan poisons do not affect humans at all, and others are in fact useful as nutrient supplements.
** Finally, a poison which is instantly lethal and tasteless
to provide what they need.Mardukans is harmless to humans, and has a very strong taste of rotten fennel.



** The treecats in the Honorverse obtain zero nutritional benefits from most celery, but absolutely love the stuff: celery modified to grow on Sphinx contains a chemical that helps maintain their telempathic abilities, and tastes better than the bitter-tasting native plant that was the source of the chemical before humanity arrived. They just eat the other celery because it tastes good. But since they're mostly carnivores over indulgence of celery causes digestive problems because of all the fiber...

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** The treecats in the Honorverse obtain zero nutritional benefits from most celery, but absolutely love the stuff: celery modified to grow on Sphinx contains a chemical that helps maintain their telempathic abilities, and tastes better than the bitter-tasting native plant that was the source of the chemical before humanity arrived. They just eat the other celery because it tastes good. But since they're mostly carnivores over indulgence of over-indulging in celery causes digestive problems because of all the fiber...
24th Jul '16 7:56:01 PM Yuihime
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* Discussed in ''Webcomic/{{Spacetrawler}}'' when Dimitri visits an alien bakery, and handwaved with the approxiscan, a device which can identify compatible substances for one's biochemistry.

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* Discussed in ''Webcomic/{{Spacetrawler}}'' when Dimitri visits an alien bakery, and handwaved with the approxiscan, a device which can identify compatible substances for one's biochemistry. In fact, Dimitri sells the aliens his grandmother's cookie recipe, which becomes insanely popular.
9th Jul '16 7:22:53 PM Yozzy
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** Nurgle's Rot is another disease that can effect all life. This one is a bit more [[JustifiedTrope justified]] because the disease is created by '''[[{{Plaguemaster}} the god of plague]]''', and is more of a [[MysticalPlague magical/psychic phenomenon]] than a physical one. It does not kill you outright as most diseases do, but slowly rots the body and soul to drive one to despair while it creates a prolonged death (both of which empower Nurgle). Even worse, as it runs its course, [[TheCorruption it corrupts the souls of its victims]] into [[TheLegionsOfHell Plaguebearers]].

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** Nurgle's Rot is another disease that can effect all life. This one is a bit more [[JustifiedTrope justified]] because the disease is created by '''[[{{Plaguemaster}} the god of plague]]''', and is more of a [[MysticalPlague magical/psychic phenomenon]] than a physical one. It does is not kill you outright as most diseases do, immediately fatal, but slowly rots the body and soul to drive one to despair while it creates a prolonged death (both of which empower Nurgle). Even worse, as it runs its course, [[TheCorruption it corrupts the souls of its victims]] into [[TheLegionsOfHell Plaguebearers]].
5th Jul '16 9:00:39 PM zarpaulus
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* ''VideoGame/{{Stellaris}}'' has "toxic" worlds but they're simply unihabitable and all sapient species seem to come from planets with Earth-like atmospheres, with the [[SingleBiomePlanet biome]] being the main criteria for determining whether a species can colonize.
5th Jul '16 6:27:11 AM Adannor
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* Averted in ''TabletopGame/DungeonsAndDragons'' when traveling the planes. Depending on the plane you go to, problems may include but are not limited to: having the life sucked out of you, too much life being crammed into you, obscenely high temperatures, obscenely low temperatures, lack of atmosphere, poisonous atmosphere, or in some extreme cases whatever the DM feels like screwing the players over with.

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* Averted in ''TabletopGame/DungeonsAndDragons'' when traveling the planes. Depending on the plane you go to, problems may include but are not limited to: having the life sucked out of you, too much life being crammed into you, obscenely high temperatures, obscenely low temperatures, lack of atmosphere, poisonous atmosphere, or in some extreme cases whatever the DM feels like screwing the players over with. The only not immediately disastrous plane would be Elemental Plane of ''Air'' - it's perfectly breathable, and while endless freefall is annoying there is [[NotTheFallThatKillsYou no ground to actually kill you with the landing]].
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