7 ms·

This is the best way to describe just about any diet or exercise ideas floated on HN.

commandar 10y ago
People also tend to very much forget that cancer is not a disease, but a class of diseases. Not all cancers will respond equally to the same treatments.
- nonbel 10y ago
  Can you give an example of a disease that responds equally to the same treatment in all people?
  - commandar 10y ago
    I'm not talking about across different people; I'm talking about different types of cancer. The causes and treatments for lymphatic cancers are different from lung cancers are different from breast cancers are different from prostate cancers are different from brain cancers are different from liver cancers, ad infinitum.
    - dualogy 10y ago
      Well there must be some things they all have in common. Anaerobic environment I thought, is that still the case? No transport of oxygen via iron possible, in my layman's memory?
      - Natanael_L 10y ago
        Like saying suffocating in vacuum and suffocating from oxygen substitution in an enclosed space (like by inert gasses) is equal. The causes are different enough that different solutions are necessary.
        nonbel 10y ago
        I don't see how this analogy works at all? In either case a space suit works doesn't it? Anyway, this whole "cancer isn't one disease" meme is best depicted by the bottom right panel of the second section of this comic: http://www.phdcomics.com/comics/archive.php?comicid=1162 http://www.phdcomics.com/comics/archive.php?comicid=1162 It looks just like the "string theory landscape", next you will be told that we need to stop worrying about comparing predictions to evidence when it comes to cancer research. Just wait a few years/decades. https://www.quantamagazine.org/20151216-physicists-and-philosophers-debate-the-boundaries-of-science/ https://www.quantamagazine.org/20151216-physicists-and-philo...
        Natanael_L 10y ago
        Can you fit the space suit? (maybe I should have said something about small spaces). Just because there's a shared behavior there's no guarantee there's a shared cause or mechanism. And even when there are, the environment can make any given solution unusable.
        nonbel 10y ago
        I can't think of any disease where we can't come up with such examples (indicating that the same treatment can't be used in all cases).
        Natanael_L 10y ago
        Yep. For example, there's people so strongly allergic to medicines that normally would be the default choice for curing a variety of diseases, making them unusable for these people. Then there are even more "fun" special cases of simultaneously occurring diseases where the cure for one makes the other disease more dangerous. But the point regarding cancer is that it just really ISN'T a single disease. That's like calling rockets, hot-air balloons, airplanes and helicopters the same thing. Sure, they all fly, but the mechanisms for them all are drastically different. Cancers are the collection of diseases which causes cells to replicate uncontrollably.
    - nonbel 10y ago
      Just as one example of a commonality, aneuploidy is reported for nearly all cancers: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2917070/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2917070/ That is clearly something that can be targeted in principle (and not the only thing). Whether the "causes" are different is irrelevant. Whether the treatments are different is a choice made by people, and also irrelevant.

People also tend to very much forget that cancer is not a disease, but a class of diseases. Not all cancers will respond equally to the same treatments.

nonbel 10y ago
Can you give an example of a disease that responds equally to the same treatment in all people?
- commandar 10y ago
  I'm not talking about across different people; I'm talking about different types of cancer. The causes and treatments for lymphatic cancers are different from lung cancers are different from breast cancers are different from prostate cancers are different from brain cancers are different from liver cancers, ad infinitum.
  - dualogy 10y ago
    Well there must be some things they all have in common. Anaerobic environment I thought, is that still the case? No transport of oxygen via iron possible, in my layman's memory?
    - Natanael_L 10y ago
      Like saying suffocating in vacuum and suffocating from oxygen substitution in an enclosed space (like by inert gasses) is equal. The causes are different enough that different solutions are necessary.
      - nonbel 10y ago
        I don't see how this analogy works at all? In either case a space suit works doesn't it? Anyway, this whole "cancer isn't one disease" meme is best depicted by the bottom right panel of the second section of this comic: http://www.phdcomics.com/comics/archive.php?comicid=1162 http://www.phdcomics.com/comics/archive.php?comicid=1162 It looks just like the "string theory landscape", next you will be told that we need to stop worrying about comparing predictions to evidence when it comes to cancer research. Just wait a few years/decades. https://www.quantamagazine.org/20151216-physicists-and-philosophers-debate-the-boundaries-of-science/ https://www.quantamagazine.org/20151216-physicists-and-philo...
        Natanael_L 10y ago
        Can you fit the space suit? (maybe I should have said something about small spaces). Just because there's a shared behavior there's no guarantee there's a shared cause or mechanism. And even when there are, the environment can make any given solution unusable.
        nonbel 10y ago
        I can't think of any disease where we can't come up with such examples (indicating that the same treatment can't be used in all cases).
        Natanael_L 10y ago
        Yep. For example, there's people so strongly allergic to medicines that normally would be the default choice for curing a variety of diseases, making them unusable for these people. Then there are even more "fun" special cases of simultaneously occurring diseases where the cure for one makes the other disease more dangerous. But the point regarding cancer is that it just really ISN'T a single disease. That's like calling rockets, hot-air balloons, airplanes and helicopters the same thing. Sure, they all fly, but the mechanisms for them all are drastically different. Cancers are the collection of diseases which causes cells to replicate uncontrollably.
  - nonbel 10y ago
    Just as one example of a commonality, aneuploidy is reported for nearly all cancers: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2917070/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2917070/ That is clearly something that can be targeted in principle (and not the only thing). Whether the "causes" are different is irrelevant. Whether the treatments are different is a choice made by people, and also irrelevant.