Skip to main content
Donate to the 95 years appeal
Sugar rush: the sweet science of human genetic adaptation
ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT examine how new genetic research reveals the rapid pace of human evolution in response to agricultural development, offering insights Marx would have found fascinating
A 2600BC depiction of a king in Sumer, an early human civilisation in the fertile crescent where humans had adapted to eat starchy foods through farming [Michel Wal/Creative Commons]

THE taste of food is something that seems fundamental. In Marx’s view, expressed in A Contribution to the Critique of Political Economy (1859), a physical property like taste provides a measure of the use-value of a commodity as distinct from its exchange-value: “From the taste of wheat, it is not possible to tell who produced it, a Russian serf, a French peasant or an English capitalist.”

Today, humanity consumes nearly 800 million metric tons of wheat a year. Other foods such as potatoes, rice, and different cereal crops are essential to diets around the world.

All of these contain large amounts of carbohydrates in the form of starch molecules. These molecules were made by the plants as an energy store. When plants photosynthesise, they use sunlight to convert water and carbon dioxide into glucose molecules.

The 95th Anniversary Appeal
Support the Morning Star
You have reached the free limit.
Subscribe to continue reading.
More from this author
UNRECOGNISED POTENTIA:L: Girl students conduct an experiment by throwing cotton balls to demonstrate the instinctive reaction of flinching at The Big Bang Fair 2025, for young scientists and engineers, at the NEC in Birmingham on June 18 2025
Science and Society / 16 July 2025
16 July 2025

What’s behind the stubborn gender gap in Stem disciplines ask ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT in their column Science and Society

The ruins of Guernica after it was bombed by the Nazis on April 26, 1937
Science and Society / 2 July 2025
2 July 2025

While politicians condemned fascist bombing of Spanish civilians in 1937, they ignored identical RAF tactics across the colonies. Today’s aerial warfare continues this pattern of applying different moral standards based on geography and race, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

LETHAL PLANS: Keir Starmer visits a defence contractor in Bedfordshire
Science and Society / 4 June 2025
4 June 2025

The distinction between domestic and military drones is more theoretical than practical, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

UNEASY COHABITATION: Southern Ridges, Singapore, 2015 Pic: Zairon/CC
Science and Society / 21 May 2025
21 May 2025

Nature's self-reconstruction is both intriguing and beneficial and as such merits human protection, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

 

Similar stories
(Left) Human embryonic stem cells; (right) A patient after i
Features / 26 March 2025
26 March 2025
A small Japanese trial has reported some positive results for stem cell therapy to treat spinal-cord injuries
(L to R) The autumn senescence of grape leaves is programmed
Science and Society / 6 November 2024
6 November 2024
Genetic engineering to remove a structure from plant cells called the Golgi body sheds light on how leaves change with the seasons, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT
LIFE-CHANGING: A selection of contraceptive pill packs
Science and Society / 11 September 2024
11 September 2024
The flexibility of the hormonal system in humans means that our biology is increasingly in our own hands, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT
MORE QUESTIONS THAN ANSWERS: Field of polymetallic nodules o
Science and Society / 31 July 2024
31 July 2024
ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT explore how metal nodules producing oxygen on the ocean floor complicate the search for extraterrestrial life and our understanding of Earth's early atmosphere