How Often You Should Shower And Wash Hair | Responding To Comments Ep. 22

Summary

This video covers a range of interesting medical and health topics, from the reasons behind sleep twitching and the causes of itching, to the science behind why spicy food causes a runny nose. It also delves into common health myths, such as the real purpose of the 10K step goal and whether posture correctors work. The video provides insights into the complexities of tinnitus, stomach growling, and burning food, as well as practical advice on electrolytes, chest compressions, and gag reflex suppression. Engaging and informative, it tackles everyday health questions with humor and expert insight.

Takeaways

• 😀 Deep sleep stages cause temporary muscle paralysis, which can result in twitching when transitioning between stages.
• 😀 Itching is caused by specific nerve fibers (C fibers) that initiate an inflammatory response, often triggered by mechanical or chemical factors.
• 😀 Vaccines are typically administered in the shoulder for ease, circulation, and accessibility, replacing the buttocks in modern practice.
• 😀 Tinnitus, or ringing in the ears, can be caused by earwax blockages or sensorineural hearing loss, signaling that the nerve is compensating for lost hearing.
• 😀 Med students may experience shock or fainting when exposed to cadavers for the first time, especially when working alone or in dark conditions.
• 😀 Spicy food triggers a runny nose due to capsaicin binding to receptors in the body, causing a burn sensation and an overproduction of mucus.
• 😀 Posture correctors may weaken core stability muscles and should only be used after a doctor’s recommendation for specific issues.
• 😀 Electrolytes after a workout can be replenished without sugar by consuming foods or drinks rich in salts, like pickle juice.
• 😀 There is no home test to assess body nutrient levels; blood tests can help identify deficiencies, but doctors treat symptoms, not just lab values.
• 😀 Stomach growling is due to peristalsis, a mechanical digestive process involving stomach muscle contractions and the movement of gas through the digestive tract.

Q & A

Why do people twitch in the middle of their sleep?

Twitching during sleep happens because as you transition between different sleep stages, your brain temporarily fails to fully shut down muscle movement. During deep sleep, your body is usually paralyzed to prevent you from acting out dreams, but sometimes, movements like twitching can slip through.

What causes the sensation of an itch?

Itching is primarily driven by histamines and involves nerve fibers called C fibers. These fibers are triggered by mechanical or chemical irritants on the skin, causing your body to send a signal to your brain that results in the sensation of itching, often as an inflammatory response.

Why are vaccines administered in the shoulder rather than the glutes?

The shoulder (deltoid muscle) is chosen for vaccines because it has good circulation, is easy to access, and requires minimal disrobing. Historically, vaccines were administered in the buttocks, but it was more invasive, and the shoulder provides a simpler option with equal effectiveness.

What causes constant ringing in the ears, and how can it be treated?

Ringing in the ears, or tinnitus, can be caused by earwax blockages or sensorineural hearing loss. The ringing sound is actually created by the nerves that would normally transmit sound signals, but due to hearing loss, they misfire. Treatment depends on the underlying cause, so it's important to consult a doctor.

Do medical students get shocked when seeing a cadaver for the first time?

Yes, it’s common for med students to be shocked or unnerved when they first encounter a cadaver. The formaldehyde smell can also be overwhelming. However, with time, most students adjust, though some might find it unsettling, especially in dim, quiet labs with external factors like thunderstorms.

Why do spicy foods cause a runny nose?

Spicy foods contain capsaicin, which tricks your body into thinking it's on fire. This stimulates receptors in your body, prompting a defense mechanism where your body produces mucus, resulting in a runny nose. It's also a good way to clear your sinuses.

Are posture correctors helpful for improving posture?

Generally, posture correctors are not recommended. They can weaken your muscles over time and cause more harm than good. It’s better to address posture issues by strengthening core muscles or consulting an orthopedic specialist for persistent concerns.

How can you replenish electrolytes without consuming sugary drinks after a workout?

Electrolytes are naturally found in foods like bananas, leafy greens, or even pickle juice. These help replenish sodium, potassium, and other electrolytes without the added sugar found in most sports drinks.

Can you test your nutrient levels at home without a doctor's visit?

Currently, there’s no straightforward at-home test for nutrient levels. However, blood tests can reveal deficiencies, though doctors usually only recommend testing if you’re experiencing symptoms. In general, if you're feeling healthy, there's no need to check your levels unless advised.

Why does the stomach growl when you're hungry?

Stomach growling, or 'borborygmi,' is caused by peristalsis—the muscles in your stomach churning food and fluids. This process is part of digestion, and the noise is amplified when your stomach is empty and there’s gas or liquid moving through your digestive system.