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Searching online for "beets testosterone" there are sources that state that beets boost testosterone levels. e.g.

The vitamin and antioxidant content of beetroot is high. It is also rich in dietary nitrates, which boost testosterone levels.

Searching online for "beets gynecomastia", there are sources that state that beets increase estrogen levels (hence men should avoid beets):

Beetroots: Beetroots contain high estrogen levels, which could cause your testosterone levels to decrease. Try to avoid this food to balance your hormones.

Also from an article that states it is written by a doctor (but without references):

The top foods that cause man breasts are soy products, beetroot, ....

If beets cause gynecomastia, that would mean that regardless of what they do to testosterone levels, they should increase estrogen abnormally high.

What is the source of this contradiction? What do reputable medical sources report on this?

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    It's great that you cited articles but those are poor sources. Blogs aren't reliable unless they link to a good study which was properly interpreted, something fairly rare on the internet. It's not at all unusual to find such contradictions. (That second source is a doozy! If it were true, most men in the US would have gynecomastia.) Commented Nov 11, 2023 at 17:43
  • @anongoodnurse: The second and third articles state that the authors are doctors. What would be the reason they write such articles without stating any reference to back up anything?
    – smith
    Commented Nov 11, 2023 at 19:24
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    The second author sells "wellness" services. You land on the page from a search engine, read it, are scared, and then buy their service to get "well". The third author is a plastic surgeon. You land on the page trying to find information and then end up undergoing plastic surgery. They are both just thinly veiled advertisements.
    – Ian Campbell
    Commented Nov 11, 2023 at 20:28
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    @anongoodnurse "If it were true, most men in the US would have gynecomastia." -- And nearly all the men in Slavic countries where beets are a staple.
    – Carey Gregory
    Commented Nov 11, 2023 at 23:48
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    It's just people trying to make money and not caring if they're accurate or consistent. Stick to web sites operated by credible sources such as government agencies (CDC, NHS, etc), medical institutions (Mayo, Johns Hopkins, etc), medical journals (JAMA), and search engines that search only academic and research sites like google scholar.
    – Carey Gregory
    Commented Nov 12, 2023 at 18:39

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