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23

So my question is: Are smokers' lungs visibly and routinely blackened and/or discolored in the absence of lung disease? That last phrase is tricky, because smokers who have heavy pigmentation are likely to have lung disease. It is not a myth that smokers have black pigmentation in their lungs, but finding proof of gross pathology in picture form is ...


8

If you look at the factors that cause an acute exacerbation of Chronic Obstructive Pulmonary Disease (such as bronchitis), you will find that The cause can not be identified in one third of the cases. In the ones with identifiable causes, they may be Respiratory infections (bacterial and viral) Allergy Toxins Non adherenace to medications. When I read ...


7

To answer this question you would need to find the source of the information. I found the study mentioned in the article in the Toronto Star (Chen, et al. 2017); and while studying risks of dementia, Parkinson's disease and multiple sclerosis, with emphasis mine, they said: In this population-based cohort study, we assembled two population-based cohorts ...


6

Cancer can be one of the most complicated concepts in medicine, not only because of the pathophysiology of cancer, but the complicated statistics involved in the epidemiology of the diseases and interpreting the results of studies on treatments. If your previous studies have been completely outside of the biological sciences, it will be very difficult to ...


5

In the case of spirometry, after taking the deepest possible breath, there are two values used most often: FVC (forced vital capacity) is the total volume of air that the person can exhale. There will still be some air in the lungs even after exhaling to the max possible. FEV1 (Forced Expiratory Volume in 1 second) is how much air a person can exhale in 1 ...


5

The above answer is correct: no they can't function independently. I want to build on that answer with a couple additional points. Consider that your heart beats while you hold your breath - but it needs oxygen, so if your lungs stop for a long time they aren't exchanging O2 and CO2 so your heart muscle will eventually stop. Conversely if your heart stops,...


5

You're overlooking one important point: Both the heart and lungs are living tissue too, and without both circulating blood and oxygen they will die just like all the other tissues in the body. So no, neither one can continue to function without the other. As for CPR, I don't see how anything would change. Without circulating blood in the lungs, no gas ...


5

This is very dependent on what one defines as a disease. There are people who only count acute conditions and/or infections as "diseases" though I wouldn't have expected a doctor to make this distinction. Under this definition, asthma would not be a disease, but a "chronic condition", for example. I found an interesting article What is a disease which ...


4

About all you can do is ventilate the room and wait for it to evaporate, which shouldn't take long. It's hard to say exactly how long without knowing the type of carpet, ambient temperature, relative humidity, etc, but I would expect a few hours, not days. Although isopropyl alcohol evaporates quickly, keep in mind that a 50% solution is 50% water, so your ...


4

I checked literature on this and found that following general measures are helpful to prevent acute mountain sickness, high altitude cerebral edema (HACE) and high altitude pulmonary edema (HAPE): These conditions generally occur at altitudes higher than 2500 meters. Beyond that, one should not ascend more than 300-500 meters per day. Slow ascent, e.g. ...


4

There are many factors to consider. The pollution level (and risk) depends on at least the following: typical wind direction during rush hour density of trees between you and the road elevation difference between you and the road presence of a noise wall between you and the road level and type of traffic on the road This page aggregated a large number of ...


4

There are some data about possible causes of vaping-related lung damage, the type of the damage and symptoms, but not about the changes in medical history questionnaires, vaping habits or e-cigarette firmware. Most commonly associated substances were THC and nicotine containing oils. Most of the investigated samples contained very high amounts of vitamin E. ...


3

You can't. Considering that agar melting temperature is approximately 85-95C / 176-185F and coals burns at around 200C / 392F at rest, providing temperature of at least 100C / 212F inside the bowl, agar will ultimately liquefy. You can eventually, still inhale it in its liquid form, just as soon as you have one of the vortex/phunnel bows (i.e the one that ...


3

The Powerbreathe is an inspiratory muscle trainer promoted as improving inspiratory muscle strength (and consequently exercise performance) in athletes and patients with respiratory disease. No published evidence supports its efficacy.2 An advantage to training was observed when outcome was assessed by maximal static inspiratory mouth pressure (mean ...


3

According to the Glossary of Old Medical Terms by Craig Thornber: Rising of the Lights: croup - any obstructive condition of the larynx or trachea (windpipe), characterised by a hoarse, barking cough and difficult breathing, occurring chiefly in infants and children. which backs up the speculations in Correspondence in the British Medical Journal, Dec ...


3

No, it just happens and you're overthinking about it. It means absolutely nothing. Cough is a protective reflex, which helps to clear the large breathing passages from fluids, irritants, foreign particles and microbes. A cough can also be psychogenic or neurogenic but certainly not telepathic or magic. What causes coughs: Most coughs are caused by cold ...


3

If we compare the average increase in all-cause mortality due to sitting (approximately 50% according to meta-study published on NHS) and the average all-cause mortality due to smoking (aproximately 300% increase according to CDC data), siting does not appear to be nearly as bad. Yet, because of how broadly you worded the question it is possible that ...


3

The cited article offers no mechanisms of action, no data to corroborate the claims, and no research (not even observational). It merely makes unsubstantiated claims and offers them as fact. As I pointed out in my comment, I can think of no mechanism by which any of the cited regimens could produce the desired effect.That said, the only thing I know of that ...


3

Dry cough is most often non-inflammatory. If you had a flu or influenza prior to the beginning of the symptoms, then you might suffer from something post-viral. It is usually self-limiting. (Wikipedia) The fact that cold air provokes your symptoms might be indicative of asthma. As such, you may need to see a pulmonary specialist. Certainly he/she run some ...


3

Your link doesn't say that. They say that they found no relationship between asthma and final height in the study population. But height is used to produce predicted lung volumes, and the explanation is as follows: In normal humans, lung size is a function of height, sex, race and age.2-4 Each lung fills a pyramidal box with a height and radius. Height ...


3

The current guidelines for treatment of Adult Respiratory Distress Syndrome do not recommend such treatment. In SARDS associated with covid-19 disease there is alveolar collapse due to infection and death of the surfactant making pneumocytes lining the alveoli. the recommendation is to generally run these patients on the dry side while being ventilated as ...


2

If you are concerned about your lungs you could try to use edibles. They will not have any effect on your lungs. However you should be careful because the onset of edibles takes longer (generally between 30 minutes and an hour) so it is harder to dose and generally lasts for a longer period (4-6 hours). Another way of consuming cannabis involves the use of ...


2

This has to be a speculative answer. Putting a Number on Smoking’s Toll? Important is this: People who quit between 25 and 34 years of age gained about 10 years of life compared to those who continued to smoke. Positive changes are not to be discounted. And stopping reduces risks. Many current and former smokers want to know their risk of developing ...


2

Leave open the window of my room all day is dangerous for me ? No. There are even more particles in a confined room that there is outside. Should I avoid walking or running along traffic queues ? Yes indeed. Forests and parcs are recommended. Trees eat up CO2 during night, so the air is a bit healthier. Does having indoor plants can benefit me ? ...


2

While it could still be a mixture of acute reasons: metals, dust, plainly unknown toxins; the underlying reason seems not to be that plant matter is vaped, nor that liquids are vaped. It also seems not to be causal whether THC or nicotine are in most cases "associated" with the disease. What the fast onset of this disease makes prudent: implicating either ...


2

It is not likely that at the first visit, a doctor will even know if there is a cancer or not. One likely scenario is: During the first visit, a doctor (a primary doctor or lung specialist) usually only asks about symptoms (chest pain, cough, coughing blood...) and checks for abnormal lung sounds, among other. At this visit, a doctor can order an X-ray, CT ...


2

Hyperoxygenation causes vasoconstriction and increased systemic vascular resistance. This can be good in some circumstances and bad in others. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3672526/ Overall there is poor evidence for supplimental oxygen in patients with pneumonia. Cochrane found that: "Non-invasive ventilation can reduce the risk of death in ...


2

The best theoretical model we have is that the SARS and SARS-CoV-2 viruses knock out the ACE2 receptor found on numerous tissues including alveolar cells, and myocytes, and intestinal luminal cells. If those cells have died then they need to be replaced, and if and until when that happens there will be reduced organ function. CT scans of recovered patients ...


2

From your own data 19% of patients need hospital care. Hospital care is usually required when the patient develops significant shortness of breath. Shortness of breath implies hypoxemia. Hypoxaemia is caused by a disturbance of gas exchange in the lungs. All of these patients have pneumonia with the early CT changes of upper peripheral parts of the lungs ...


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