Orange juice, leafy greens and berries may be tied to decreased memory loss in men

leafy greens
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Eating leafy greens, dark orange and red vegetables and berry fruits, and drinking orange juice may be associated with a lower risk of memory loss over time in men, according to a study published in the November 21, 2018, online issue of Neurology, the medical journal of the American Academy of Neurology.

"One of the most important factors in this study is that we were able to research and track such a large group of men over a 20-year period of time, allowing for very telling results," said study author Changzheng Yuan, ScD, of Harvard T.H. Chan School of Public Health in Boston. "Our studies provide further evidence dietary choices can be important to maintain your brain health."

The study looked at 27,842 men with an average age of 51 who were all health professionals. Participants filled out questionnaires about how many servings of fruits, vegetables and other foods they had each day at the beginning of the study and then every four years for 20 years. A serving of fruit is considered one cup of fruit or ½ cup of fruit . A serving of vegetables is considered one cup of raw vegetables or two cups of leafy greens.

Participants also took subjective tests of their thinking and at least four years before the end of the study, when they were an average age of 73. The test is designed to detect changes that people can notice in how well they are remembering things before those changes would be detected by objective cognitive tests. Changes in memory reported by the participants would be considered precursors to mild cognitive impairment. The six questions include "Do you have more trouble than usual remembering a short list of items, such as a shopping list?" and "Do you have more trouble than usual following a group conversation or a plot in a TV program due to your memory?"

A total of 55 percent of the participants had good thinking and memory skills, 38 percent had moderate skills, and 7 percent had poor thinking and memory skills.

The participants were divided into five groups based on their fruit and consumption. For vegetables, the highest group ate about six servings per day, compared to about two servings for the lowest group. For fruits, the top group ate about three servings per day, compared to half a serving for the bottom group.

The men who consumed the most vegetables were 34 percent less likely to develop poor thinking skills than the men who consumed the least amount of vegetables. A total of 6.6 percent of men in the top group developed poor cognitive function, compared to 7.9 percent of men in the bottom group.

The men who drank every day were 47 percent less likely to develop poor thinking skills than the men who drank less than one serving per month. This association was mainly observed for regular consumption of orange juice among the oldest men. A total of 6.9 percent of men who drank orange juice every day developed poor cognitive function, compared to 8.4 percent of men who drank orange juice less than once a month. This difference in risk was adjusted for age but not adjusted for other factors related to reported changes in memory.

The men who ate the most fruit each day were less likely to develop poor thinking skills, but that association was weakened after researchers adjusted for other dietary factors that could affect the results, such as consumption of vegetables, juice, refined grains, legumes and dairy products.

The researchers also found that people who ate larger amounts of fruits and vegetables 20 years earlier were less likely to develop thinking and memory problems, whether or not they kept eating larger amounts of fruits and vegetables about six years before the memory test.

The study does not show that eating fruits and vegetables and drinking orange juice reduces memory loss; it only shows a relationship between them.

A limitation of the study was that participants' and thinking skills were not tested at the beginning of the study to see how they changed over the course of the study. However, because all participants completed professional training, they can be assumed to have started with relatively high cognitive function in early adult life. In addition, the study were all male health professionals such as dentists, optometrists, and veterinarians. Thus, the results may not apply to women and other groups of men.

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Journal information: Neurology

Citation: Orange juice, leafy greens and berries may be tied to decreased memory loss in men (2018, November 21) retrieved 21 September 2019 from
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User comments

Nov 21, 2018
I have orange juice every morning, I eat lots of salads everyday, and I love berries!

Then why is it that people on this forum say that I am dumb, an idiot, and all other kinds of bad names?

Nov 21, 2018
Don't think that has anything to do with it Bart, but just think, you'll be able to remember those insults far longer than they will!

Nov 22, 2018
You should have guessed by now that those folks who have nothing nice or respectful to say of others certainly don't have much of a life. Perhaps they were bullied when they were children, and now it's their turn to do the bullying.
Don't let their ignorance and stupidity mess up YOUR life. Just say what you have to say and ignore the nasty stuff. You are better than they are in a good way.
I get rated "1" all the time from the idiots who disagree with my ideas. I don't like their ideas ether, but I don't get nasty about it. Life is too short to get worked up over what strangers say. Some of them, I suspect, are mentally ill - so I just ignore their comments.

Nov 22, 2018
I have a very strong suspicion that most of our health problems are caused by fungal infections.
In my theory the fungus causes food to ferment and so release a continuous low level stream of alcohol into the intestines, bloodstream and eventually the liver. This causes all kinds of problems in the brain and arteries as the liver begins to struggle to deal with the toxins in addition to the alcohol. Eventually something gives, leading to diabetes, memory loss and heart attacks.
So to protect oneself it might be a good thing to limit refined sugar, high GI carbs and fruit juice intake as well as eat foods that actively limit fungal formation: Olive oil, strong tea(with tannins, even that has it's own evils), aloe vera juice, garlic, chamomile tea, berbedine, coconut oil, wild salmon, cruciferous veg, green leafy veg(especially cos lettuce) and of course pro and pre biotics.
Just saying.

Nov 22, 2018
@Cusco, hilarious. I laughed my butt off. Nothing personal @Bart_A, just the cleverness of the reply. (set yourself up a little there didntya:)

Nov 22, 2018
@FredJose, many of our health problems can be traced to pathogens, yes (not only fungi but viruses and bacteria too). H. Pylori, for instance, has been linked with stomach cancer.

Nov 22, 2018
bart, seu, fred a mature adult would not constantly whine about how unfair it was that they were being insulted for making stupid ignorant comments.

The star rating system has been broken since the Nineties. It is just an exercise in mutual emotional masturbation. As people have learned the different tricks to scam the system? It has become increasingly meaningless.

I have asked people to not star me. I simply disregard what I consider as fallacious opinions that adds nothing to the discussion.

What you cultist loons should be asking yourselves? If I, a satirist comedian gifted you stars in affirmation? What does that say about your silly tweets?

What does that say about your self-image craving and begging for affirmation from the likes of me?

Nov 23, 2018
This comment has been removed by a moderator.

Nov 26, 2018
@FredJose The world if full of toxins. Most come from companies that produced toxins during the world wars(nerve agents, agent orange, nylon). Most the toxins produced during war time have been allowed to be used commercially in peace time (mainly herbicides and pesticides). In addition there has been no over-site of the chemical production. Its all mostly "self regulated" which we know means little or no regulation.
So with these unnatural toxins add to it your natural toxins and its a bona fide miracle that there are still things living on the planet.
With all our technology and knowledge we can not product chemicals that are not toxic to humans.

Nov 26, 2018
Tarımda kullanılan kimyasallar (ilaç, GMO, gübre, hazır yem) sayesinde ne yersek yiyelim her bakımdan sağlığımız bozulur. Hafıza ve diğer sağlık sorunlarımızın düzelmesi için doğal ürünleri tercih etmeliyiz. Fakat endüstriyel tarım ürünleri pazarında bu imkansız.

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