It's been established multiple times that Adam has magical powers because he's a television host, and lives in a world where television hosts have powers. So, why couldn't Doctor Todd use his own magical powers to counter Adam? Simple: In the previous episode it was established that "whoever has the knowledge, has the power." Since Doctor Todd was clueless about...well...everything, his host powers didn't work.
Actually, he was able to follow Adam into the commercial. And he didn't seem surprised that he was suddenly inside the commercial, so it's likely that he consciously followed Adam into it. So, the only thing that has less knowledge then a clueless medical host, is a commercial.
Likewise, in "Adam Ruins Prisons", Emily's cellmate Kendra has powers equal to and perhaps greater than Adam's, simply because she's been in and out of prison since she was a child and knows everything about prisons... except how to get out, because she's equally aware that the system is designed to keep her there.
On a related note, Haley's date in "Adam Ruins Hygiene" surprises Adam by making an expert appear in the bathroom mirror. How? Sanitation is all he seems to talk about, so it's entirely possible that he stole Adam's powers by having more in-depth knowledge on the subject. On top of that, he knew this expert personally; Adam didn't.
Similarly, in the episodes where someone else is the host talking about a subject Adam himself is ignorant to, he seems to not have any powers at all and instead the other person is in control of the show. He often is unprepared and surprised when the new host teleports them and even complains about Emily's repetitive teleporting when she's explaining the glasses monopoly to him.
Why is it that Hayley dies, and Adam can't just make her spring back to life with his magical host powers? He has no knowledge of death itself. However, why is it that he can talk to Emily throughout the episode if she's dying? Because he either knew that she would live, or even that she was never in any actual danger of dying in the first place.
Alternatively, it's because Emily was having a Near-Death Experience, which we know plenty about, whereas Hayley was completely dead, a state of being that we are currently unable to explore freely.
At the end of the nutrition episode it shows Snacky the whale working out and lamenting his wife leaveing him for a bigger octopus. While clearly a gag it would also make sense that it's hinting/ruining, accidentally or otherwise, at the opposite of bad nutrition: bodybuilding is an absurdly dedicated and time consuming process that requires a certain amount of obsession to truly get big. Usually that obsession, when negative, comes in the form of trying to compensate for emotional damage or a misguided desire to prove one's self using their body as a metric.
Adam mentions a couple of times that he owns turtles, which, given his character, makes perfect sense. Turtles are low-maintenance and long-lived, so they’re not ruinous like some pets he’s covered, and he’s less likely to have to deal with the likelihood of losing them.
Sometimes this show can give a viewer a full-blown existential crisis. Customs we think of as time-honored traditions are Newer Than They Think and often the product of some kind of marketing or PR campaign. Something that seemed trivial a generation ago can be responsible for a serious societal problem today. Governments and bodies of scientific research can and have flat out lied to the public. What is real? What is true? Who can be trusted?
In "Adam Ruins Nutrition," Dr. Todd Bodd makes a comment about having to work as a stripper again if his show tanks when rioting crowds take it over. Later he resolves to create a new, scientifically accurate show, but six months later we see his set empty, implying the new show failed miserably. Where's he working now?
In "Adam Ruins Sex", why should Emily be cited as an expert on the hymen? While she is absolutely correct that the hymen isn't a good indicator of (non-)virginity, simply being a female does not mean that someone knows their own anatomy. It's like saying every human being is automatically an expert at human biology, which obviously isn't true. Many women know next-to-nothing about their own body, and/or believe many of the myths surrounding female virginity, and in the very same episode it's pretty clear that Murph, a male, is ignorant about male circumcision and the foreskin.
The point likely wasn't she was an automatic expert but Emily's segment was hedging against male ignorance. Emily studied her own anatomy and was deconstructing their ignorance and shooting down Adam condescending she needs to cite an expert.
It would have been better for her to call in a doctor, however. Specifically, a gynecologist.
Probably, but that was only half the point. An ignorant man is taught the truth of the vagina by a woman and he condescends she needs an expert to redundantly confirm her own study of her own anatomy, the misconception of which is pointed out to have fueled many misogynistic practices. Which was half if not more than the point.
Is it condescending though to ask that she use more than her own body as evidence? The ideal is to cite a source that takes many women's bodies into account rather than implying that what applies to one (Emily) applies to most/all.
It was in that particular instance, because that was leading up to the point being made.
Why isn't Adam screamed at or physically attacked on a regular basis? People really don't want to hear this stuff, even though it's vitally important and could save their lives. I mentioned the "Adam Ruins Drugs" episode - specifically, that DARE increases drug use - to my sister because her daughter received a DARE assignment that reduced her to tears, and she got violent, accusing me of referring to "blather on my computer" and encouraging her daughter to abuse drugs. Adam got tased in the episode, but why hasn't any of his semi-friends ever hit him or said his sources don't matter, they have their own sources and they don't want to hear contradicting evidence?
...which also explains how he recovered from getting tased so fast. Normally that takes days.
Basically you aren't Adam and there isn't a narrative forcing your sister to believe or accept what you're saying. Either way she's wrong to react violently, especially if the assignment reduced her daughter to tears. It's generally not wise to build familial arguments on "the tv said" anyway. It's not very strong unless you're showing them then and there, under neutral circumstances.
Well, Emily DID try to hit him once in Adam Ruins Death. It just didn't work because she was about to die/having a near-death experience.
Furthermore it has happened several times. In the episodes "Adam Ruins Sex", "Adam Ruins Hygiene", "Adam Ruins Malls" and "Adam Ruins Justice", Adam is forced to have a taste of his own medicine and is powerless when people tell him things he doesn't want to know. Both "Adam Ruins Justice" and "Adam Ruins Christmas" have his sister yell at him for essentially doing nothing but tell people information while not doing anything about the situation at hand. In the episode "Adam Ruins Voting", he gets pepper sprayed twice by his accomplice during the episode. In "Adam Ruins Forensic Science" he is arrested for wasting police time and most episodes generally have the victim freak out out at Adam before and after he tells them things they don't want to know. In "Adam Ruins Drugs", he gets tased. In "Adam Ruins The Economy" Jim Kray-Kray tries to murder him. "Emily Ruins Adam" takes it to it's logical conclusion, with Emily physically and mentally attacking him in a boxing match to display how even though Adam is proving people wrong, not everyone will accept it and the brain responds in the same way as getting physically hit.
