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Doctor insights on: How Does Your Body 27s Immune System Defend Itself Against Hepatitis A

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Is it true that in certain diseases, the immune system attacks your body - it causes your immune system to produce antibodies against your own tissues?

Is it true that in certain diseases, the immune system attacks your body - it causes your immune system to produce antibodies against your own tissues?

Yes: Body can make antibodies as well as cells that damage or destroy its own cells and tissues and are the basis for some diseases, e.g., systemic lupus, hemolytic anemia, myasthenia gravis, multiple sclerosis, rheumatoid arthritis and more. See this site for more info. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001819/. ...Read more

Dr. Brett Kalmowitz
644 doctors shared insights

Hepatitis A (Definition)

A viral infection of your liver usually food born that will resolve over time with ...Read more


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How does your immune system "remember" pathogens during the second exposure?

How does your immune system "remember" pathogens during the second exposure?

Immunity: there are several types of immune responses to pathogens involving T and B cells and other mechanisms involved in memory of the immune system that help it recognize a pathogen and attack it ...Read more

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If you have a auto immune disease such as sjogrens, does that mean your immune system is suppressed? Effecting your body ability to fight off cancer?

If you have a auto immune disease such as sjogrens, does that mean your immune system is suppressed? Effecting your body ability to fight off cancer?

Disordered immunity: The problem in most autoimmune disorders is not immune suppression, but immune confusion. Instead of just fighting invading organisms, your immune system also attacks your normal tissues, and this immune response is what causes inflammation and symptoms of the disease. With prolonged chronic immune stimulation, some of the cells may begin to reproduce uncontrollably, causing cancers like lymphoma. ...Read more

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How does the immune system fight off germs?

How does the immune system fight off germs?

Heard to simplify.: Like a complicated orchestra plays a difficult score. Different germs produce different responses. There are is nonspecific and specific immune responses. Even the skin oils, saliva, stomach acid tears and sweat are important here. It is much to difficult to quickly answer which is why i taught a course taking 20 hours on the subject to medical students. ...Read more

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How can the body defend itself against varicellazoster virus (chickenpox) ?

How can the body defend itself against varicellazoster virus (chickenpox) ?

Through vaccination: The best protection against herpes varicella- zoster virus (vzu) is vaccination. ...Read more

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Does the immune system protect against cancer too?

Yes: Natural killer cells help to kill cells that it recognizes as abnormal. So a poorly functioning immune system may make you more likely to develop cancer. ...Read more

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How does the immune system work when it encounters a type of virus/bacteria?

How does the immune system work when it encounters a type of virus/bacteria?

Broad question: The immune system tailors it's response to various viruses and to various bacteria in several different ways that can be quite complex depending on how far you want to drill down. Some viruses are destroyed by specialized cytotoxic cells that kill the infected host cell thereby reducing viral replication. Some bacteria are lysed by a combination of antibodies and other blood components. ...Read more

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How does the hepatitis b virus attack the immune system?

How does the hepatitis b virus attack the immune system?

HEPATITIS B: Liver injury is determined by patient's immune response to infection. Hepatocellular damage is indicated by the presence of serologic immune markers, predominance of t lymphocytes and plasma cells. Response to therapy with corticosteroids and immunosuppressants. ...Read more

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How does the immune system fights a viral infection step by step?

How does the immune system fights a viral infection step by step?

Immune defense: TheRe are textbooks written about this, this is not the right forum for your question. ...Read more

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How does exposure to germs affect the immune system and general health?

Infections good/bad: Can be good or bad. Germs (viruses, bacteria, parasites, etc) stimulate one or more response(s) by immune system to isolate and destroy the "attacker" which is usually good. However that immune response may be excessive leading to disease (ie autoimmune illnesses) bad. The improvement in childhood health may be contributing to the increase in allergy, the hygiene hypothesis, usually a negative. ...Read more

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How does the immune system protect from cancer?

How does the immune system protect from cancer?

Complicated: By fighting tumor causing viruses, e.G, ebv, hpv, good immune response may prevent the development of tumors. There is a general hypothesis that tumors have antigens not present on normal cells and that immune system may be able to eliminate incipient cancers. However the system is far from perfect as cancers occur all the time. ...Read more

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Is it a virus itself or your body's immune response to the virus that harms u and makes u sick?

Both: For example, the flu virus can trigger asthma and the other "cold' symptoms. The fever and body aches are likely the result of the body fighting off the virus by producing interferons. ...Read more

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Does being exposed to germs when young help build the immune system?

Does being exposed to germs when young help build the immune system?

Absolutely: As we grow and develop, we encounter many pathogens that we are technically naive to and develop immunity. Our immune system has innate and adaptive branches that are very capable, however vaccinations are what really protect us from several deadly diseases. Studies of poor children in Mexico City showed that they had a lower incidence of diabetes than wealthy kids, possibly due to oral tolerance. ...Read more

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When you have an unfamiliar foreign invader in your body how long does it take your immune system to recognize it?

Depends: The body has innate immune system which recognizes many of the foreign invaders nearly immediately. The acquired immune system is more specifically targeted but the time to develop immunity varies among individuals and the invaders themselves. Overall, one would not expect meaningful immune response at least 10 days and peak response weeks after the exposure. ...Read more

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How does the immune system fight malaria?

How does the immune system fight malaria?

Two stages: Natural Killer cells are the first immune step that seeks out the malaria to mark it for the body to "kill" it. A second step is the T cell that also seeks the genetic marker of the malaria to flag it for a "kill". Since malaria invades natural cells of the body it can begin to hide from the immune system and replicate. Consider vaccination if traveling in high risk areas with malaria. ...Read more

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How long does the hepatitis b vaccine itself stay inside your body?

How long does the hepatitis b vaccine itself stay inside your body?

Interesting ?: The substance injected probably last a few weeks at most. But the response brought about by the vaccine series (all 3 shots) may last forever. I ugh eat checking titters after vaccination in high-risk patients then checking levels again every ten years. Boosters given if needed. ...Read more

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How does being overweight compromise the immune system and why?

Theoretical,unproved: See the following abstract from the national institutes of health: http://www.Ncbi.Nlm.Nih.Gov/pubmed/8281221 it's very technical-just pay attention to the first & last sentences. In summary: obesity may reversibly impair a certain type of white cell (lymphocytes) but clearly, considering that almost half the usa is obese, the effect is minor if it occurs at all. ...Read more

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Does the body have a defense mechanism against wounds?

Does the body have a defense mechanism against wounds?

An amazing system: As dr. Berg said, our body's defense mechanism against wounds is amazing. It is truly extraordinary and exceptionally effective. If we didn't have such an effective system, wounds would never heal and everyone would die from infection. ...Read more

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Dr. Jay Park
1,183 doctors shared insights

Hepatitis (Definition)

An ...Read more