- I've seen the comment section. You guys have a lot of medical questions and I pulled together and I'm gonna answer some of
the most juicy ones right now. Huge thank you to ShipStation
for sponsoring this video. Pee-woop! Daniel von Diego: "Is it dangerous to sleep
next to a WiFi router?" Do we have evidence
that it's dangerous? No. Do I recommend it? No. Move it away. Find a
different point for it. Don't keep it next to your brain. Also, keep your cellphone
away from your brain. And keep your cellphone out of arm's reach so you don't reach for it
in the middle of the night if you can't sleep 'cause
that's the sure-fire way to disturb your sleep. "What advice do you have
for the partners of people who work in medicine? Given the long hours of workload, it can be difficult to stay connected." It's very difficult. Do you know how many relationships end when someone goes to medical school? Tons. But also, do you know how
many relationships form 'cause you realize that like
sometimes attracts like? Humans are magnets. "Is it okay to lick a pen?" Medically, I wouldn't advise. Is it okay? Ethically, morally, I
mean, I think it's fine. Don't lick part of the
pen that releases ink. That's not edible. The way that I think
about pens is the same way that I think about our fingers. Our fingers are disgusting. They have a lot of bacteria on them. If you touch your phone, you're essentially touching
other people's poop. There's poop on everything these days: keyboards, phones, water
bottles, it's all over the place. It's just floating around. And because of that, it's
probably on your pen too. And if you're gonna put
your pet in your mouth, you're putting poop in your mouth. So is it okay to lick poop? No, then not okay to lick your pen. That's how I'm stating my answer. "Is drinking my own blood bad for me? I promise I don't do it on
purpose, but it happens a lot." It is a problem. Drinking blood is a GI
disturber, whatever. It's not good for your GI system. In some people it's can cause
tremendous constipation. Because what does blood have in it? Iron. In others, it can cause inflammation and irritation of your GI
tract, leading to diarrhea. How do we know this? In those who have frequent
nose bleeds and then do this, start swallowing a lot of blood, it can lead to nausea, vomiting, and/or constipation/diarrhea
if it stays there long enough. "Is it bad to hold in poop?" You have an anal sphincter for reason. It's so that you don't just
poop while you're sitting there. If you lose control of your poop, it's called fecal incontinence, and that can happen as a result of all sorts of medical problems. A common one that we talk about or learn about in boards is something called cauda equina syndrome. That lower end of your spinal cord actually starts getting compressed, and it creates such compression that you you develop incontinence or decreased sensation in
the saddle area of your body. But holding in your poop is
a normal thing for a human. So just be reasonable
with it. Don't overdo it. Because you could actually
hold in your poop so long that you start developing
nausea and vomiting because you're actually
creating a backup in the system. So don't do that. "Is it bad to stay up all
night several nights a week?" It is absolutely bad. In fact, I'm gonna go on record and say, the uptick in neurological conditions like Alzheimer's, dementia, et cetera, I believe is happening due to the fact that we no longer respect sleep. We pride ourselves on sleeping
less and working more. We value hustle culture. We stay up late because of
social media and anxiety and mental health struggles, and as a result, we're
creating brain problems. Back to the questions in just a second, but first, I wanna talk
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back to the questions. "Why am I able to play any VR game for countless hours without getting sick, but the moment I start driving a car, I get motion sickness?" In a VR people get motion sick
because there's a disconnect from what their vision is seeing versus what their semicircular canals in their ears are experiencing. So that sort of disconnect can
create nausea in some people that you can get used to. In an automobile, because you're constantly
starting and stopping, you're having the opposite disconnect where your semicircular canals are experiencing a lot of
activation, a lot of stimulus, but your vision might be
looking at a still object. So that's a different disconnect on opposite ends of the spectrum, and you can have worse
motion sickness on one end but not the other. "Every time I wake up
much earlier than normal, like to catch a flight, I
get really bad indigestion. Is this just coincidence
or is something going on?" There's something going on. The central nervous
system of our bodies works on two different systems. One is the rest, repair,
and digest nervous system that happens and gets activated when we sleep, when we
chill, when we meditate. And then the flight or
flight response system, which is like what happens
if we see a threat. When we're sleeping, we're in rest/digest. If you don't get enough sleep, you don't repair, you don't digest well. So when you wake up early, your body has to go into
fight or flight mode. It has to kick in your adrenaline
in order to keep you awake and allow you to function normally. And also, many people, to
combat waking up early, drink a ton of caffeine which stimulates acid
secretion from your stomach, which can create gastroesophageal reflux, which is like traditional heartburn. "What's the difference between an allergy and an intolerance?" Such an important question here because so many people say
they're allergic to things when they're really not. And then it creates other problems. So many of my patients say that they have a penicillin allergy when they actually don't. And as a result, they
lose a set of antibiotics that are actually quite effective and have a low risk of side effects. An allergy is a histamine-driven response where you actually get itchiness, hives, and you start scratching your skin. There's eosinophils present. You could also have an allergic
response to anaphylaxis where your throat starts
closing up, you have swelling because histamine start
allowing the swelling of tissues by making blood vessels more porous. Then you get cytokines and all these inflammatory cells come, and it becomes a big problem 'cause it closes off your airway. An intolerance is when something just doesn't sit right with you. It causes some other
malfunction in your body. For example, if you're lactose intolerant, it's not an allergy because
you don't get a rash, you don't get anaphylaxis. But you do have diarrhea, so it's an intolerance,
but not an allergy. "Why is my pubic hair so curly?" Okay, Max, did not expect that one. Pubic hair is a type of
hair called terminal hair. It starts as vellus hair on
our bodies when we're babies. Vellus hair is the type of peach fuzz hair that we actually still have on our bodies. And in certain areas due to puberty, we start developing terminal hair changes and it becomes deeper,
it becomes more coarse, becomes more curly. In fact, pubic hair
really doesn't grow longer than six inches because
of how often it sheds and breaks out. Also, really interesting
about pubic hair... Never thought I would say that. But I think the reason that it's curly is
because back in the day, cavemen days/cavewomen days, we had a bush and that bush helped us
have better locking in of our pheromones, that smell. It was actually an
aphrodisiac at this time when we all walked
around without clothing. It was an advantage for those who had curlier pubes to survive. Also, pubes are great
protection from friction. "What are smelling salts made of? How do they work?" You sniff them and the the nasal receptors
get so irritated by them, it sends a shock response to
your brain and it wakes you up. "Is there a way to minimize
the appearance of scars?" There are things you
you can do about scars, mostly and where I see
the best results from, through lasers and through
surgical approaches. There's very little thing
you can do topically in terms of like putting a cream on it. There are some creams that do some benefit in terms of smoothening the scar, but removing the scar can
only really be done surgically or with a laser, which is basically a type
of surgery, in my opinion. My friend Dr. Bhanusali does a great job of this on his Instagram channel. DarkHighness666: "I'm a woman and I sneeze
too loud, it's embarrassing. What can I do to not sneeze so loudly?" Sneeze loudly, just dab when you do it. Don't let anyone judge you. The fact that you're worried about this is worth investigating with your doctor because you should not feel ashamed by carrying out a normal human
body act in front of others. Everyone sneezes and it's okay to sneeze. And if you sneeze loudly, who cares? "Are there parts of my
body I shouldn't shave?" That's actually a good question because we shave our faces. Some people shave their armpits, benign, but actually can create friction, especially if you do a lot of running. The problem with shaving your pube... I feel like we're covered
a lot of pubic stuff in this video. The problem with shaving your pubic region is there has been some research showing that there are increased
STI rates when you do shave because more skin on skin contact, so more chance to spread STIs. Also, when you shave, you
can create micro-tears, leading to openings in the skin, which can allow body fluids
and blood to get into, thereby creating another infection. Maybe skipping out shaving
the pubes is not a bad idea. "When you need a knee or hip replacement, how do doctors know the right size?" That's a good question
for an orthopedic surgeon. I'm pretty sure there's
a measurement they do prior to inserting the instrument. A, look at the x-ray and
they'll get a general sense, but then they probably
trial different sizes in the operating room and they see. Orthopedic surgeons, please chime in. "Hey, doc, what do surgeons do with tumors once they've been removed?" Generally, we send them to pathology for analysis through microscopy to see A, what kind of tumor they are, how differentiated they
are, what cells are present. In some cases like with skin
cancers, we do a cutout, and sometimes we look right then and there to make sure that we cut out
the entire margin of the tumor to make sure that we didn't
leave any cancer cells behind. "Why do humans randomly to get itchy? I understand why you itch from
hairs or bugs being on you, but so often I itch when
there's nothing touching me. What gives?" Okay, Theresa,
this is very important. Because if you are itchy
like that, to that degree, perhaps there's a medical
condition going on, perhaps allergic, perhaps otherwise, but we would need to
investigate that further. There's many reasons why humans get itchy. Itchiness can come from something physically
bothering your skin or a chemical reaction
bothering your skin. Both can cause itchiness. And there's also like the nerve thing. Nerves misfire and can make it feel like an itching sensation is present when it's not really there. "I'm thinking about becoming a nurse, but I have a serious fear of needles. Do you think it's worth pursuing or should I look into else?" That is something that you can overcome. There are legitimate medical treatments and therapies targeted at those who have phobias of any kind. Needles are one that you
can definitely overcome. So if that's the sole thing that's preventing you from
having an amazing long career that is much needed, do not let it stop you from
having a very productive, rewarding job because of a
phobia that you can overcome. Is it dangerous to hold in a
sneeze? Click here to find out. And also, don't miss out on your 60-day free trial to ShipStation by visiting ShipStation.com/DoctorMike. As always, stay happy and healthy. Click. (upbeat music)
