There are many kinds of cancers, STDs and more that don't show symptoms.
If you have cancer, you definitely have symptoms. Because cancer is malfunction, so something works wrong. And that difference from normal body function is named "symptom".
A person can even have HIV and not know it for years.
If there is no symptoms, there are no illness. You can have any virus but if there is nothing changed in your body that means you are not ill. Presense of virus in a body does not mean illness. Most human coronaviruses does not cause any illness. If you once got chicken-pox as a child, you can't become ill from chicken-pox virus at all. Right now you have at least few dozens different kinds of viruses in your body that does not (and mostly can't) cause any illness. They are integral part of your natural microbiome., Moreover, if you completely get rid of some of them (bacteriophages, f.e.), you will become ill.
There is thing named natural immunity - normal body function to neutralize known pathogens if they appear in a body before they do any harm, that don't allow pathogen make you ill. Some people could have immunity to HIV, or just be unvulnerable for it due to specific DNA. And It is without discussing the fact that there is no any scientific proof that HIV is a cause of any illness, including AIDS.
If body does not know how to neutralize pathogen, pathogen can have time do a harm to a body and body will show symptoms, directly from damage caused by pathogen or from low-level damage repairing process (inflammation, f.e.). And in that case and only in that case that would be illness.
getting tested regularly for asymptomatic illnesses
There are can't be asymptomatic illnesses/diseases at all. Illness/disease absolutely means symptoms just by definition. Illness/disease is a presence of symptoms. illness/disease is defined as disorder of structure or function of body, it means that body is not working properly. And that disorder or improper working is named "symptom". If you have no symptoms - there are no disorder or malfunction, so you can't be ill.
"asymptomatic disease" is pure oxymoron, invented by swindlers from WHO only year and half ago to blow up coronahoax figures from nothing.
Once again, you're wrong. There are many cancers that don't manifest symptoms until the later stages. Regular blood test screenings can detect these illnesses early on (when they're ASYMPTOMATIC) and give the patient a much higher chance of survival.
blood test screenings can detect these illnesses early
By what means if there is no symptoms?
when they're ASYMPTOMATIC
So, what this test detect if there is no symptoms?
Do you understand that any body malfunction is a symptom? If your normal blood parameters had changed, say there are huge excess of lymphocites - that is symptom too.
If that test just search for "something" in the blood - it's a bullshit and not a "cancer test" in any way, may be you just eat something and that "something" just appeared in your blood until body get rid of that "something" usual way. Or, it is just false-positive, that is usual for "something detecting" "tests".
You shoud be completely dumb to start worry and go for anti-cancer treatment after such meaningless "cancer test".
Presence of viruses or pathogens in blood or other parts of body is not a symptom, because it is normal way our body working. Pathogens continuously get into our body during daily life and our body take an appropriate action on them, so we don't get ill. Symptoms will appear only if body does not do its work on removing or neutralising harmful pathogens and they began to damage body.
In the case of cancer, just because there are no perceptible symptoms doesn’t mean that the cancer isn’t present and in the process of metastasizing. That’s how a blood test can pick up on it and “you” can’t.
no perceptible symptoms doesn’t mean that the cancer isn’t present and in the process of metastasizing.
Symptoms does not always mean pain or feeling some sensation. Just like bruise - there are already no any pain, but it is still here - your body still fixing damage that is why that blue spot here. Or if body temperature slightly higher than normal, say 37°C - many people does not feel that at all, but the symptom in form of unusual temperature still exists. Same with cancer. There should be symptoms if it present. Even if there is no pain. If there are no symptoms, there are no cancer.
That’s how a blood test can pick up on it
That is not "how". "How" is what this test checking exactly. There could be as normal tests, that show changes in working of your body, i.e. symptoms, f.e. temperature measurement or counting lymphocytes in drop of blood, and "tests" that just show presence of something in your body that really does not mean you are ill.
In any case, there could not be an illness without symptoms.
If you have cancer, you definitely have symptoms. Because cancer is malfunction, so something works wrong. And that difference from normal body function is named "symptom".
If there is no symptoms, there are no illness. You can have any virus but if there is nothing changed in your body that means you are not ill. Presense of virus in a body does not mean illness. Most human coronaviruses does not cause any illness. If you once got chicken-pox as a child, you can't become ill from chicken-pox virus at all. Right now you have at least few dozens different kinds of viruses in your body that does not (and mostly can't) cause any illness. They are integral part of your natural microbiome., Moreover, if you completely get rid of some of them (bacteriophages, f.e.), you will become ill.
There is thing named natural immunity - normal body function to neutralize known pathogens if they appear in a body before they do any harm, that don't allow pathogen make you ill. Some people could have immunity to HIV, or just be unvulnerable for it due to specific DNA. And It is without discussing the fact that there is no any scientific proof that HIV is a cause of any illness, including AIDS.
If body does not know how to neutralize pathogen, pathogen can have time do a harm to a body and body will show symptoms, directly from damage caused by pathogen or from low-level damage repairing process (inflammation, f.e.). And in that case and only in that case that would be illness.
There are can't be asymptomatic illnesses/diseases at all. Illness/disease absolutely means symptoms just by definition. Illness/disease is a presence of symptoms. illness/disease is defined as disorder of structure or function of body, it means that body is not working properly. And that disorder or improper working is named "symptom". If you have no symptoms - there are no disorder or malfunction, so you can't be ill.
"asymptomatic disease" is pure oxymoron, invented by swindlers from WHO only year and half ago to blow up coronahoax figures from nothing.
Once again, you're wrong. There are many cancers that don't manifest symptoms until the later stages. Regular blood test screenings can detect these illnesses early on (when they're ASYMPTOMATIC) and give the patient a much higher chance of survival.
By what means if there is no symptoms?
So, what this test detect if there is no symptoms?
Do you understand that any body malfunction is a symptom? If your normal blood parameters had changed, say there are huge excess of lymphocites - that is symptom too.
If that test just search for "something" in the blood - it's a bullshit and not a "cancer test" in any way, may be you just eat something and that "something" just appeared in your blood until body get rid of that "something" usual way. Or, it is just false-positive, that is usual for "something detecting" "tests". You shoud be completely dumb to start worry and go for anti-cancer treatment after such meaningless "cancer test".
Presence of viruses or pathogens in blood or other parts of body is not a symptom, because it is normal way our body working. Pathogens continuously get into our body during daily life and our body take an appropriate action on them, so we don't get ill. Symptoms will appear only if body does not do its work on removing or neutralising harmful pathogens and they began to damage body.
In the case of cancer, just because there are no perceptible symptoms doesn’t mean that the cancer isn’t present and in the process of metastasizing. That’s how a blood test can pick up on it and “you” can’t.
Symptoms does not always mean pain or feeling some sensation. Just like bruise - there are already no any pain, but it is still here - your body still fixing damage that is why that blue spot here. Or if body temperature slightly higher than normal, say 37°C - many people does not feel that at all, but the symptom in form of unusual temperature still exists. Same with cancer. There should be symptoms if it present. Even if there is no pain. If there are no symptoms, there are no cancer.
That is not "how". "How" is what this test checking exactly. There could be as normal tests, that show changes in working of your body, i.e. symptoms, f.e. temperature measurement or counting lymphocytes in drop of blood, and "tests" that just show presence of something in your body that really does not mean you are ill.
In any case, there could not be an illness without symptoms.