Goji Berries: Which Benefits Do They Really Have?

Goji berries: antioxidant effects, immune benefits, anticancer potential, and even help against age-related macular degeneration. Find them at your local health food store or online.
A sticker featuring the words "Goji Berries" to highlight their benefits.

Are Goji Berries Really A Superfood?

Goji berries are popularly considered a superfood, and sold for everything from anti-aging effects, to exciting benefits* that would get this email directed to your spam folder if we described them.

*We searched so you don’t have to: there doesn’t seem to be much research to back [that claim that we can’t mention], but we did find one paper on its “invigorating” benefits for elderly male rats. We prefer to stick to human studies where we can!

So how does the science stack up for the more mainstream claims?

Antioxidant effects

First and most obvious for this fruit that’s full of helpful polysaccharides, carotenoids, phenolic acids, and flavonoids, yes, they really do have strong antioxidant properties:

Goji Berries as a Potential Natural Antioxidant Medicine: An Insight into Their Molecular Mechanisms of Action

Immune benefits

Things that are antioxidant are generally also anti-inflammatory, and often have knock-on benefits for the immune system. That appears to be the case here.

For example, in this small-but-statistically-significant study (n=60) in healthy adults (aged 55–72 years)

❝The GoChi group showed a statistically significant increase in the number of lymphocytes and levels of interleukin-2 and immunoglobulin G compared to pre-intervention and the placebo group, whereas the number of CD4, CD8, and natural killer cells or levels of interleukin-4 and immunoglobulin A were not significantly altered. The placebo group showed no significant changes in any immune measures.

Whereas the GoChi group showed a significant increase in general feelings of well-being, such as fatigue and sleep, and showed a tendency for increased short-term memory and focus between pre- and post-intervention, the placebo group showed no significant positive changes in these measures.❞

“GoChi” here is a brand name for goji berries, and it’s not clear from the abstract whether the company funded the study:

Source: Immunomodulatory effects of a standardized Lycium barbarum fruit juice in Chinese older healthy human subjects

Here’s another study, this time n=150, and ages 65–70 years old. This time it’s with a different brand (“Lacto-Wolfberry”, a milk-with-goji supplement drink) and it’s also unclear whether the company funded the study. However, taking the data at face value:

❝In conclusion, long-term dietary supplementation with Lacto-Wolfberry in elderly subjects enhances their capacity to respond to antigenic challenge without overaffecting their immune system, supporting a contribution to reinforcing immune defense in this population. ❞

In other words: it allowed those who took it to get measurably more benefit from the flu vaccinations that they received, without any ill effects.

Source: Immunomodulatory effects of dietary supplementation with a milk-based wolfberry formulation in healthy elderly: a randomized, double-blind, placebo-controlled trial

Anticancer potential

This one’s less contentious (the immune benefits seemed very credible; we’d just like to see more transparent research to say for sure), so in the more clearly-evidenced case against cancer we’ll just drop a few quick studies, clipped for brevity:

You get the idea: it helps!

Bonus benefit for the eyes

Goji berries also help against age-related macular degeneration. The research for this is in large part secondary, i.e. goji berries contain things x, y, and z, and then separate studies say that those things help against age-related macular degeneration.

We did find some goji-specific studies though! One of them was for our old friends the “Lacto-Wolfberry” people and again, wasn’t very transparent, so we’ll not take up extra time/space with that one here.

Instead, here’s a much clearer, transparent, and well-referenced study with no conflicts of interest, that found:

❝Overall, daily supplementation with Goji berry for 90d improves MPOD by increasing serum Z levels rather than serum L levels in early AMD patients. Goji berry may be an effective therapeutic intervention for preventing the progression of early AMD.❞

  • MPOD = Macular Pigment Optical Density, a standard diagnostic tool for age-related macular degeneration
  • AMD = Age-related Macular Degeneration

Source: Macular pigment and serum zeaxanthin levels with Goji berry supplement in early age-related macular degeneration

(that whole paper is very compelling reading, if you have time)

If you want a quicker read, we offer:

How To Avoid Age-Related Macular Degeneration

and also…

Brain Food? The Eyes Have It!

Where to get goji berries?

You can probably find them at your local health food store, if not the supermarket. However, if you’d like to buy them online, here’s an example product on Amazon for your convenience 😎

Enjoy!

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  • Stop Cancer 20 Years Ago

    Dr. Jenn Simmons shares vital tips on preventing cancer and inflammation, advocating for lifestyle changes and proactive health management at any age.

    Get Abreast And Keep Abreast

    This is Dr. Jenn Simmons. Her specialization is integrative oncology, as she—then a breast cancer surgeon—got breast cancer, decided the system wasn’t nearly as good from the patients’ side of things as from the doctors’ side, and took to educate herself, and now others, on how things can be better.

    What does she want us to know?

    Start now

    If you have breast cancer, the best time to start adjusting your lifestyle might be 20 years ago, but the second-best time is now. We realize our readers with breast cancer (or a history thereof) probably have indeed started already—all strength to you.

    What this means for those of us without breast cancer (or a history therof) is: start now

    Even if you don’t have a genetic risk factor, even if there’s no history of it in your family, there’s just no reason not to start now.

    Start what, you ask? Taking away its roots. And how?

    Inflammation as the root of cancer

    To oversimplify: cancer occurs because an accidentally immortal cell replicates and replicates and replicates and takes any nearby resources to keep on going. While science doesn’t know all the details of how this happens, it is a factor of genetic mutation (itself a normal process, without which evolution would be impossible), something which in turn is accelerated by damage to the DNA. The damage to the DNA? That occurs (often as not) as a result of cellular oxidation. Cellular oxidation is far from the only genotoxic thing out there, and a lot of non-food “this thing causes cancer” warnings are usually about other kinds of genotoxicity. But cellular oxidation is a big one, and it’s one that we can fight vigorously with our lifestyle.

    Because cellular oxidation and inflammation go hand-in-hand, reducing one tends to reduce the other. That’s why so often you’ll see in our Research Review Monday features, a line that goes something like:

    “and now for those things that usually come together: antioxidant, anti-inflammatory, anticancer, and anti-aging”

    So, fight inflammation now, and have a reduced risk of a lot of other woes later.

    See: How to Prevent (or Reduce) Inflammation

    Don’t settle for “normal”

    People are told, correctly but not always helpfully, such things as:

    • It’s normal to have less energy at your age
    • It’s normal to have a weaker immune system at your age
    • It’s normal to be at a higher risk of diabetes, heart disease, etc

    …and many more. And these things are true! But that doesn’t mean we have to settle for them.

    We can be all the way over on the healthy end of the distribution curve. We can do that!

    (so can everyone else, given sufficient opportunity and resources, because health is not a zero-sum game)

    If we’re going to get a cancer diagnosis, then our 60s are the decade where we’re most likely to get it. Earlier than that and the risk is extant but lower; later than that and technically the risk increases, but we probably got it already in our 60s.

    So, if we be younger than 60, then now’s a good time to prepare to hit the ground running when we get there. And if we missed that chance, then again, the second-best time is now:

    See: Focusing On Health In Our Sixties

    Fast to live

    Of course, anything can happen to anyone at any age (alas), but this is about the benefits of living a fasting lifestyle—that is to say, not just fasting for a 4-week health kick or something, but making it one’s “new normal” and just continuing it for life.

    This doesn’t mean “never eat”, of course, but it does mean “practice intermittent fasting, if you can”—something that Dr. Simmons strongly advocates.

    See: Intermittent Fasting: We Sort The Science From The Hype

    While this calls back to the previous “fight inflammation”, it deserves its own mention here as a very specific way of fighting it.

    It’s never too late

    All of the advices that go before a cancer diagnosis, continue to stand afterwards too. There is no point of “well, I already have cancer, so what’s the harm in…?”

    The harm in it after a diagnosis will be the same as the harm before. When it comes to lifestyle, preventing a cancer and preventing it from spreading are very much the same thing, which is also the same as shrinking it. Basically, if it’s anticancer, it’s anticancer, no matter whether it’s before, during, or after.

    Dr. Simmons has seen too many patients get a diagnosis, and place their lives squarely in the hands of doctors, when doctors can only do so much.

    Instead, Dr. Simmons recommends taking charge of your health as best you are able, today and onwards, no matter what. And that means two things:

    1. Knowing stuff
    2. Doing stuff

    So it becomes our responsibility (and our lifeline) to educate ourselves, and take action accordingly.

    Want to know more?

    We recently reviewed her book, and heartily recommend it:

    The Smart Woman’s Guide to Breast Cancer – by Dr. Jenn Simmons

    Enjoy!