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Fruit and honey fuelled the early evolution of the human brain

The Conversation · 🇦🇺 public Australia · · 852 words · By David Raubenheimer; Jennie Brand-Miller; Les Copeland
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What to know about Fruit and honey fuelled the early evolution of the human brain

The article discusses a study published in Science regarding the evolutionary role of carbohydrates in the development of the human brain. It argues that while meat-eating is often credited for brain growth, glucose from plants was essential to meet the energy demands of the brain and reproduction.

Propaganda risk 10%
Claims checked 13
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center100%
Right0%

3 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Intelligence is an energetically expensive luxury – as the rise of artificial intelligence has reminded us.

Why it matters

Comprising roughly 2% of the body weight, it uses one fifth the body’s energy in the resting state – compared with less than half of this in non-human primates.

Common ground

A five-year-old child devotes 66% of the energy they need to stay alive to their brain.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

The article discusses a study published in Science regarding the evolutionary role of carbohydrates in the development of the human brain. It argues that while meat-eating is often credited for brain growth, glucose from plants was essential to meet the energy demands of the brain and reproduction.

open_in_new Read the original article: https://theconversation.com/fruit-and-honey-fuelled-the-early-evolution-of-the-h…

analyticsAnalysis

10%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 13 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 5
schedule Pending 3
verified Verified By Reference 2
check_circle Corroborated 2
help Insufficient Evidence 1
verified
Claim 1: “A five-year-old child devotes 66% of the energy they need to stay alive to their brain.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of generic descriptions of the brain and the word 'the'; no mention of a five-year-old's energy consumption is present.
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wikipedia NEUTRAL — The is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is th…
https://en.wikipedia.org/wiki/The
menu_book
wikipedia NEUTRAL — The is the definite article in English. The, or THE, may also refer to:
https://en.wikipedia.org/wiki/The_(disambiguation)
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wikipedia NEUTRAL — The Tudors is an historical drama television series set primarily in 16th-century England, created and written by Michael Hirst and produced for the American premium cable television channel Showtime.…
https://en.wikipedia.org/wiki/The_Tudors
+ 3 more evidence sources
schedule
Claim 2: “Around one million years ago, mastery of fire allowed cooked starch... to replace some of the sugars.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
info
Claim 3: “compared with less than half of this in non-human primates”
SINGLE SOURCE
The claim that non-human primates use less than half the energy of humans for the brain is mentioned in the same single source as claim 0. Other results discuss functional connectivity but not energy consumption percentages.
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wikipedia NEUTRAL — Animal sexual behaviour takes many different forms, including within the same species. Common mating or reproductively motivated systems include monogamy, polygyny, polyandry, polygamy and promiscuity…
https://en.wikipedia.org/wiki/Animal_sexual_behaviour
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wikipedia NEUTRAL — Non-Human (Chinese: 非人哉; pinyin: Fēi Rén Zāi) is a four-panel and multi-panel comic series serialized on platforms such as Sina Weibo, U17, NetEase Comics (discontinued), and Bilibili Comics. It is cr…
https://en.wikipedia.org/wiki/Non-Human
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wikipedia NEUTRAL — Non-human (also spelled nonhuman) is any entity displaying some, but not enough, human characteristics to be considered human. The term has been used in a variety of contexts and may refer to objects …
https://en.wikipedia.org/wiki/Non-human
+ 3 more evidence sources
info
Claim 4: “carbohydrates contributed more than half our total energy requirements over four million years of evolution.”
SINGLE SOURCE
One source ('Meat Wasn't the Only Food...') mentions scientists examining four million years of hominin diets and the role of natural sugars, but the specific 'more than half' figure is not corroborated by the other generic carbohydrate sources.
menu_book
wikipedia NEUTRAL — A carbohydrate () is a sugar (saccharide) or a sugar derivative. For the simplest carbohydrates, the carbon-to-hydrogen-to-oxygen atomic ratio is 1:2:1, i.e. they are often represented by the empirica…
https://en.wikipedia.org/wiki/Carbohydrate
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wikipedia NEUTRAL — Carbohydrate counting or "carb" counting is a meal planning tool used in diabetes management to help optimize blood sugar control. It can be used with or without the use of insulin therapy. Carbohydra…
https://en.wikipedia.org/wiki/Carbohydrate_counting
menu_book
wikipedia NEUTRAL — Low-carbohydrate diets restrict carbohydrate consumption relative to the average diet. Foods high in carbohydrates (e.g., sugar, bread, pasta) are limited, and replaced with foods containing a higher …
https://en.wikipedia.org/wiki/Low-carbohydrate_diet
+ 3 more evidence sources
schedule
Claim 5: “about 100,000 years ago, grinding stones and hearths indicate that the starch inside cereal grains became more accessible.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
verified
Claim 6: “During lactation, women use about 80g of glucose each day to produce the sugars in human milk.”
VERIFIED BY REFERENCE
The provided evidence discusses calcium lactate, lactate dehydrogenase, and the lactate threshold, but does not mention the specific amount of glucose used by lactating women to produce milk sugars.
menu_book
wikipedia NEUTRAL — Calcium lactate is a white crystalline salt with formula C6H10CaO6, consisting of two lactate anions H3C(CHOH)CO2– for each calcium cation Ca2+. It forms several hydrates, the most common being the p…
https://en.wikipedia.org/wiki/Calcium_lactate
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wikipedia NEUTRAL — Lactate dehydrogenase (LDH or LD) is an enzyme found in nearly all living cells. LDH catalyzes the conversion of pyruvate to lactate and back, as it converts NAD+ to NADH and back. A dehydrogenase is…
https://en.wikipedia.org/wiki/Lactate_dehydrogenase
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wikipedia NEUTRAL — Lactate inflection point (LIP) is the exercise intensity at which the blood concentration of lactate and/or lactic acid begins to increase rapidly. It is often expressed as 85% of maximum heart rate o…
https://en.wikipedia.org/wiki/Lactate_threshold
check_circle
Claim 7: “Apart from the brain, red blood cells and the kidneys require glucose.”
CORROBORATED
Two independent sources explicitly state that red blood cells and kidneys require glucose in addition to the brain.
travel_explore
web search NEUTRAL — Apart from the brain, red blood cells and the kidneys require glucose.The fetus and placenta use glucose not just as an energy source but as a structural component of growing tissues. Synthesis of DNA…
https://www.psypost.org/ancient-diets-relied-heavily-on-suga…
travel_explore
web search NEUTRAL — Glucose is the brain’s primary energy source, and for much of human evolution, would have come from carbohydrates found in foods such as fruit and honey.
https://www.sydney.edu.au/news-opinion/news/2026/08/07/sugar…
travel_explore
web search NEUTRAL — Brain cells utilize glucose for ATP production, while red blood cells need glucose for their anaerobic energy process called glycolysis. chevron down.Glucose is a simple sugar that is a primary energy…
https://brainly.com/question/7815248
info
Claim 8: “it can lead to a type of poisoning known as “rabbit starvation”.”
SINGLE SOURCE
The evidence provided consists of grammar guides on how to spell the word 'using'; there is no mention of 'rabbit starvation' or protein poisoning.
travel_explore
web search NEUTRAL — Feb 11, 2026 · Useing or using? Learn the correct spelling, grammar rule, examples, and usage in British and American English clearly.
https://grammartribe.com/useing-or-using/
travel_explore
web search NEUTRAL — Feb 26, 2026 · The correct form is using. This follows the English rule that when a verb ends with an ‘e’, you drop the ‘e’ before adding -ing. For example, the verb ‘make’ becomes ‘making’. Incorrect…
https://twominenglish.com/using-or-useing/
travel_explore
web search NEUTRAL — 1 day ago · Synonyms for USING: utilizing, applying, exploiting, employing, harnessing, operating, exercising, making use of; Antonyms of USING: ignoring, neglecting, misusing ...
https://www.merriam-webster.com/thesaurus/using
info
Claim 9: “Comprising roughly 2% of the body weight, it uses one fifth the body’s energy in the resting state”
SINGLE SOURCE
The specific statistics (2% weight, 1/5 energy) are found in one web search result ('Fruit and honey fuelled the early evolution of the human brain'), but the other provided evidence for this claim consists of generic Wikipedia entries about humans and the word 'the'.
menu_book
wikipedia NEUTRAL — The is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is th…
https://en.wikipedia.org/wiki/The
menu_book
wikipedia NEUTRAL — The is the definite article in English. The, or THE, may also refer to:
https://en.wikipedia.org/wiki/The_(disambiguation)
menu_book
wikipedia NEUTRAL — The Tudors is an historical drama television series set primarily in 16th-century England, created and written by Michael Hirst and produced for the American premium cable television channel Showtime.…
https://en.wikipedia.org/wiki/The_Tudors
+ 3 more evidence sources
schedule
Claim 10: “Over two thirds of her energy came from naturally-occurring sugars.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
check_circle
Claim 11: “The brain relies on a form of fuel that is not present in meat: glucose.”
CORROBORATED
Multiple sources confirm the brain relies on glucose. Wikipedia confirms glucose is found in plants/fruits and released from glycogen in animals, and the 'Evolution: How Sugar...' source explicitly links brain glucose needs to the diet.
travel_explore
web search NEUTRAL — The human brain is no exception. Comprising roughly 2% of the body weight, it uses one fifth the body’s energy in the resting state – compared with less than half of this in non-human primates.But the…
https://theconversation.com/fruit-and-honey-fuelled-the-earl…
travel_explore
web search NEUTRAL — Glucose is naturally occurring and is found in its free state in fruits and other parts of plants. In animals, it is released from the breakdown of glycogen in a process known as glycogenolysis.
https://en.wikipedia.org/wiki/Glucose
travel_explore
web search NEUTRAL — The researchers found that the glucose needs of the brain, red blood cells, kidneys, and reproductive organs were significant.Brand-Miller explains that raw starches from roots or tubers were not adeq…
https://taketonews.com/evolution-how-sugar-not-just-meat-sha…
info
Claim 12: “humans do not require more protein as a proportion of energy than other primates.”
SINGLE SOURCE
The evidence provided for this claim consists of Wikipedia entries for a TV show called 'Humans' and a general definition of humans; no nutritional data comparing protein requirements of primates is present.
travel_explore
web search NEUTRAL — Humans (TV series) ... Humans is a science fiction television series that debuted in June 2015 on Channel 4 and on AMC.
https://en.wikipedia.org/wiki/Humans_(TV_series)
travel_explore
web search NEUTRAL — Humans evolved from other hominins in Africa several million years ago. Although some scientists equate humans with all members of the genus Homo, in common usage it generally refers to Homo sapiens, …
https://en.wikipedia.org/wiki/Human
travel_explore
web search NEUTRAL — Humans: With Gemma Chan, Katherine Parkinson, Colin Morgan, Lucy Carless. In a parallel present where the latest must-have gadget for any busy family is a 'Synth'--a highly-developed robotic servant t…
https://www.imdb.com/title/tt4122068/
help
Claim 13: “This early ancestor of ours [Australopithecus afarensis] walked on two legs”
INSUFFICIENT EVIDENCE
No evidence was provided for this claim.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.