The study of diseases, including their causes and effects.

learn more… | top users | synonyms (1)

2
votes
1answer
32 views

What can thrombosis lead to?

I am thinking this question. Thrombosis can result in organisation of thrombus, sepsis thromboembolism, fibrinoid swelling adiposity. I fibrinoid swelling (edema) (4) can occur. Also, I think (3) ...
3
votes
2answers
140 views

Electronic cigarettes (e-cigs), any health risks?

Background: An electronic cigarette (e-cig or e-cigarette) is a battery-powered device which simulates tobacco smoking patented in 1963 by Herbert A. Gilbert. It generally uses a heating element ...
1
vote
1answer
38 views

What are the purposes of granulocytes in acute inflammation?

I heard the phrase Neutrophilic leucocytes are kings in the acute inflammation. Neutrophils are granulocytes, while leucocytes are not granulocytes. I think this statement refers to the fact ...
5
votes
2answers
85 views

Improving myopia

I have a friend who no longer needs glasses. He previously had myopia in both eyes but over the years it has improved until he no longer needs glasses clinically. He's had glasses for over 30 years ...
1
vote
1answer
26 views

What are the movement mechanisms of thrombus?

I am thinking how thrombus (veins, arteries and heart) can move. Secondary mechanisms come to my mind only: some enzyme which lyses it, probably adhesion mechanism. Blood circulation (flow rate) ...
0
votes
1answer
22 views

How many systemic reactions in inflammation?

I have this sentence in my notes Inflammation consists of two local reactions and one systemic reactions. which is difficult for me to accept. Two local reactions are vascular and cellular. I ...
-1
votes
1answer
467 views

I don't wash my hands and never get sick. Any theories? [closed]

I have only been sick a few times in my life(I'm 21 and probably 3-4 times) and even when I am sick I don't feel that bad and I am over it within a day or two. My family has always given me slack for ...
0
votes
1answer
43 views

Which processes are included in the process called cells eating themselves?

I am reading about atrophy and I am thinking to which processes the phrase cells eating themselves refer to. Cells need something to survive these difficult times. To decrease protein synthesis ...
1
vote
0answers
58 views

What is the biochemical pathway of fluoride?

Fluoride is a common active ingredient in tooth paste to prevent dental caries. It is also added or removed from the water supply in some communities for the same reason, but in children only. My ...
-2
votes
2answers
79 views

Why it is rare for person to get infected with two Pathogens?

Why is it rare for a person to have 2 (or more) infectious diseases (for example: Flu & Cold together at the same time)? Although it's rare, it happens when the immune system is weak (e.g when ...
5
votes
2answers
57 views

Standard Classification of Disease

I am working on a project for health center. It involves the creation of a database of all diseases. Currently I want to classify disease on the base of their category based on international standard. ...
3
votes
1answer
124 views

How much influence does toxoplasmosis have on personality and intelligence?

Latent toxoplasmosis effects up to 1/3 of the human population, and up to 40% of the population in Australia. I have heard that latent toxoplasmosis has many significant undesirable effects on ...
1
vote
1answer
61 views

Can pets catch the cold?

Last night I was drying my cat with a towel after shenanigans in the rain and she sneezed! Questions Can cats/dogs/hamsters or other pets catch the cold? How quickly do they recover?
2
votes
1answer
167 views

What are the visual, behavioral similarities and differences between Yellow Fever Mosquito (Aedes aegypti) and the Tiger Mosquito (Aedes albopictus)?

The Tiger and Yellow Fever Mosquito visually look very similar. Recognizing the difference is important for tracking and controlling the spread of Yellow Fever, Dengue fever and other diseases. ...
7
votes
4answers
137 views

Organisms as potential Bio-Weapons?

Question: Given that with genetic engineering we can customize organisms as bio-weapons. Which species have the most worrying potential to be weaponized for mass destruction? Background: ...
12
votes
1answer
2k views

Do we actually get more sick (flu/cold) during winter?

The word flu derives from the Italian phrase "influenza de freddo" meaning "influence of the cold". Indeed it is that time of the year when my colleagues seem to have the flu/cold more often than ...
5
votes
1answer
89 views

Could murder be modeled as an infectious disease?

Background "When swine flu hit the population it spiked in certain areas and tapered off in neighboring regions, it hits hardest where people have least protection and this pattern is more ...
1
vote
0answers
57 views

What are the ingredients of Pheromone Trap using for controlling Fruit flies of cucumber?

Pheromone Traps are used for fruit fly control. But I have no idea which ingredients or chemicals are used for preparing Pheromone trap
1
vote
1answer
190 views

Why does beta-2-Thienylalanine inhibit bacterial growth?

I'm trying to obtain a better understanding of the Guthrie Test, which checks whether people have a disease called PKU. The Guthrie test uses bacteria to check for Phenylalanine (the amino acid) in ...
1
vote
1answer
20 views

Giving diuretics to insipidus patient

I read in Tortora and Derrickson that giving diuretics to diabetes insipidus patients may in fact alleviate the symptoms of the disease. How is this possible?
0
votes
1answer
46 views

Growth Hormone and diabetes

Growth hormone and insulin like growth factors are diabetogenic, so I assume that people with high growth hormone (say due to pituitary tumor) may be at high risk for diabetes. Has any correlation ...
4
votes
2answers
68 views

Transmission of disease from mother to fetus

Can parasite, microbes be passed from mother to fetus through the placenta ? I know some like HIV can be.
1
vote
2answers
3k views

Why is weight gain a symptom of Cushing's Syndrome?

Cushing's syndrome results from increased levels of cortisol in the body. Cortisol as I understand it however, promotes the breakdown of glycogen and amino-acids in the process of gluconeogenesis, to ...
3
votes
1answer
57 views

What is the cause of the spots on this leaf?

On a hiking trip to the Alps I found trees whose leaves showed those spots you see on the picture. I am curious about what the cause is. Higher resolution pictures of front and back side.
4
votes
1answer
161 views

Inheritance of Huntington's disease

People with Huntington's disease have HTT genes with more than 37 copies of CAG repeat. The risk of extra copies being generated is higher during sperm formation than during ovum formation. Why is it ...
6
votes
2answers
700 views

Do animals get sick from eating dirty food or eating off the floor?

Humans have very strict tradition of hygiene, such as washing hands before eating, using utensils, and in general keeping as much distance between food and dirt as possible. At the same time, most ...
5
votes
2answers
60 views

Are there any pathogenic archaeans?

Most textbooks seems to restrict pathogens to the domains bacteria and eukarya. Are there any pathogenic archaeans?
1
vote
1answer
3k views

Is Diabetes sex linked disease

There are two types of diabetes mellitus. a. Type 1 diabetes mellitus b. Type 2 diabetes melliuts Is either of them a sex linked disease? Can either one be inherited? My book says, "this disease is ...
0
votes
1answer
22 views

To what extent is eating and nutrition important in recovery from minor illness like viral fever?

I'm guessing it is important, but just to be a little more precise, What would be the maximum amount of calories above which it is just a waste (or even harmful) How much does the metabolism raise ...
3
votes
1answer
73 views

Enlargement of joints in osteoarthrosis

If osteoarthritis (osteoarthrosis) is a degenerative condition, where the cartilage in joints wears down, what causes the joints to become inflamed? I'm reading through a book called Understanding ...
5
votes
1answer
60 views

Diabetes-diabetes comorbidity

Is it possible to have both type-1 (insulin-dependent) and type-2 (non-insulin-dependent) diabetes mellitus? That is, to have both insulin resistance and zero (or negligible) insulin production? If ...
7
votes
2answers
4k views

Reasons why people say that AIDS/HIV doesn't exist

It's been recurrent when I hear people saying that AIDS doesn't exist. When I ask why, they give weird reasons like HIV is a virus created to control economy and to develop medicine, etc. Also when I ...
1
vote
1answer
18 views

Preventing Diabetes by preventing stress?

I have came to know that taking a lot of stress increases the risk of Diabetes, and patients of Diabetes are adviced not to take too much stress, am i correct? if yes then I am unable to understand ...
3
votes
2answers
195 views

By what mechanism does coeliac disease cause excess fat in the feces?

Wikipedia states that ā€œSevere coeliac disease leads to the characteristic symptoms of pale, loose and greasy stool (steatorrhoea)ā€. However thumbing through the causes and the pathophysiology it did ...
1
vote
0answers
32 views

Avian Diseases : How to Disinfect [closed]

How can I sanitize a bird's carcass so that no diseases are present after disinfection? I was thinking $\gamma$-ray bombardment since ozonation would only surface disinfect.
3
votes
1answer
1k views

How do liver and lung metastases cause death?

Metastasis to the liver and lungs are the main causes of death in colorectal cancer.(1) I understand that colorectal cancer may have metastases. But how do these metastases cause death? Reference ...
2
votes
1answer
259 views

How do pet gecko lizards pose a health risk?

Does having gecko lizards living in your house pose any health risk?
1
vote
1answer
58 views

What is the disadvantage of having no anticoagulation after pulmonary embolism?

Is chronic anticoagulation always given after pulmonary embolism? What are the risks or disadvantages if anticoagulation is not given? if terminated early?
3
votes
1answer
148 views

By what mechanism is Streptococcus bovis acting as a risk factor for colorectal cancer?

Streptococcus bovis bacteremia/endocarditis is considered a risk factor for colorectal cancer. What pathophysiological mechanism may link the two together?
2
votes
1answer
318 views

By what mechanism does an obstructed bile duct cause excess fat in the stool?

By what mechanism does an obstructed bile duct (for example gallstones) cause steatorrhoea (excess fat in the stool)?
3
votes
1answer
261 views

What factors govern the variable age of onset in Huntington's Disease?

"Huntington's disease (HD) is a neurodegenerative genetic disorder that affects muscle coordination and leads to cognitive decline and psychiatric problems." As we all know, this genetic disease ...
2
votes
1answer
70 views

Whence fecal E. coli (et al.) if swallowing it is dangerous?

I don't know much about medicine, and I know even less about microbiology, but I understand that there are organisms in the lower gastrointestinal tract (and in feces) of a human, like Escherichia ...
2
votes
2answers
489 views

Iron deficiency anemia symptoms explanation

In my classes and on the internet, brittle nails and dry hair (or hair loss) are described as symptoms of iron deficiency anemia, but none explains the cause of such symptoms. Does anyone have any ...
5
votes
1answer
97 views

Can cirrhosis be caused by physical compression of the body?

On a random forum, a member speculated that their cirrhosis was caused by wearing tight-fitting clothing such as a girdle or corset. This leads me to the following question: Question: Can ...
13
votes
3answers
288 views

Can plants get cancer?

I can't think of any reason why plants wouldn't be able to get cancer, but I've never heard of a plant growing a tumor. I've also never seen a plant with a noticeable abnormal growth. Can plants get ...
1
vote
0answers
117 views

Cause of secondary symptoms of common cold

this year I was lucky to get sick by cold twice. First one had as a secondary symptom toothache. The second one was even more interesting in the fact, that when I cough I will fill ache in my ...
2
votes
1answer
126 views

In scuba diving, are nitrogen narcosis and high pressure nervous syndrome the same thing?

In training for scuba diving, they tell you that when you're bellow 100 ft or so you have to watch out for changes in mental state that resemble drunkenness. The cause of these mental disturbances is ...
5
votes
1answer
48 views

Can paper/plastic currency serve as a medium for pathogens?

http://www.nytimes.com/2009/12/15/health/15real.html seems to indicate for a surface, to serve as a medium, the following properties are relevant animation humidity temperature The article ...
16
votes
4answers
1k views

Why does the cold make us sick?

From the moment we learn to communicate, we always get told, whether by our parents, or our teachers, or by anyone else, to avoid the cold, or to put a jacket on to avoid catching a cold, to dry our ...
3
votes
1answer
79 views

What mechanisms do animals living in groups (herds, packs, swarms) have against spreading contagious diseases?

While for example a wolf pack provides protection to a sick wolf, increasing its chance of survival, there is a risk of infecting other members of the pack, decreasing their total chance of survival. ...