Ex Vivo Cancer Proliferation Bioassay

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  • Yes I did. Vegan diets are healthy, as long as they are not transformed into a lifestyle. There's only so much you can survive with this diet until malnutrition starts to install.
    Furthermore, vegan diets are less environmental friendly than normal diets. A lot of ecosystems are destroyed to ensure vegetable output.

  • Vegan diets can be nutritious.

    Yes, land is required to grow food; however, land is also required to grow food that is fed to animals that are in turn fed to people. What if people cut out the middle-link in this food chain? Vegan diets are generally more efficient in land use.

  • Elliot, animals are no longer fed by using extensive land areas, as BIO foods are (or should be) produced. Industrially, animals are fed corn (which is NOK on my part, but this is another issue). Therefore, vegan diets are still dependent on land surface, when animal grow can be optimized in terms of space usage.

    Additionally, what about the amounts of pesticides coming from the intake of a lot of raw vegetables?

  • This is just incorrect. Do you have any idea how much land it takes to GROW the food that we feed to famed animals? 70-80% of all grain produced in the US is fed to cattle – tell me how that's optimizing space usage. Also, if you think pesticides are only ingested by eating veggies, you are gravely mistaken. Don't kid yourself by thinking the grain fed to animals is organic. Also, add antibiotics and hormones to that list as well.

  • Stay simple to stay healthy, compare present human being with every century in past and you shall find the more simple your life is the more simple are your worries are, including health – sjsrana

  • There are many plant based diets that are not actually vegan. If you actually look at the works being quoted, exercise can have just as big an impact as the dramatic diet changes. 2003 paper for example the conclusion is that exercise alone has the same effect diet change and exercise. "A low-fat diet and/OR intensive exercise results in change in serum hormones and growth factors in vivo that can reduce growth and induce apoptosis of LNCaP prostate tumor cells in vitro."

  • In the video, note that the error bars are not explained (are they 95% CI ? or worse SE ? or even worse SD ? ) and the graphs are not full scale so that the y scale is blown up to visually over-emphasize the changes seen in these in vitro tests. For example, in the first graph, only 8% decrease with the error bars where N is small (12) could still mean a significant part of the population which see no change due to the diet and exercise change. That goes for majority of the data in both graphs.

  • The diet they were give wasn't vegan I'm afraid:

    "Fifteen to 20% of the calories were from protein, primarily from a plant
    source, two servings of nonfat milk, and no more than 3.5
    oz of fish or fowl. The remaining calories, 70–75%, were
    obtained from carbohydrates in the form of vegetables,
    fruits, legumes, and whole grains."

    The experiment included daily exercise (30-60 minutes) for the two weeks, so diet wasn't the only independent variable. Exercise is very well known to decrease the risk of some cancers by 40-50%

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