Spanish Scientist Suggests Ancient Egyptians Chewed Narcotic Plants

A skull and a foot are seen in the tomb of Amenemhat, south of Cairo. (Reuters file photo)
A skull and a foot are seen in the tomb of Amenemhat, south of Cairo. (Reuters file photo)
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Spanish Scientist Suggests Ancient Egyptians Chewed Narcotic Plants

A skull and a foot are seen in the tomb of Amenemhat, south of Cairo. (Reuters file photo)
A skull and a foot are seen in the tomb of Amenemhat, south of Cairo. (Reuters file photo)

A Spanish researcher suggested that ancient Egyptians chewed narcotic plants after spotting sexual dimorphism in ancient Egyptian skulls unearthed at the Montuemhat necropolis (TT34), in the Assasif region, in Luxor (southern Egypt).

Sexual dimorphism is the systematic difference in form between individuals of different sex in the same species.

Researcher Jesus Lopez, from the biology department at Madrid’s Cantoblanco Universidad, conducted a study involving skulls of 43 women and 41 men.

He found that men had a very wide face, while women had remarkable differences in their zygomatic arch (cheek bone), a bone extending forward from the side of the skull, over the opening of the ear. The zygomatic arch plays a key role in the masticatory system.

In his study published in the latest issue of the Journal of Anthropological Sciences, Lopez seemed surprised to spot differences between men and women faces, but he ruled out a link between these differences and nutrition as both genders consumed the same food.

“You should look for other activities that are not necessarily linked to food; it’s probably related to the mastication system. It could be the mastication of qat and betel (an addictive plant with tobacco-like characteristics), or the use of the mouth as a third hand in some functions,” he told Asharq Al-Awsat.

Lopez also spotted significant fragility in the occipital condyle, the point which connects the head and the spinal cord. This case was widespread in both genders, even in young skulls, but mostly among women, which suggest that both women and men used their heads for work.

“Images from ancient Egypt depict women carrying heavy loads on their heads. Today, we see the same scene in many countries, where women carry loads on their heads, making a lot of efforts to maintain their balance, while performing other tasks. We found the same effects in the skulls of men, which suggests that men also carried heavy loads although this isn’t depicted in ancient Egyptian images,” Lopez explained.

“We cannot differentiate the types of loads, but we know they were heavy,” he added.

Egyptologist Bassam al-Shamaa rejected Lopez’s allegation about the narcotic plant mastication.

“I agree with the Spanish research’s interpretation on the fragility in the occipital condyle based on images showing men carrying heavy loads on their heads like women, but the use of the mouth as a third hand should be the only suggested reason behind differences in the zygomatic arch,” he told Asharq Al-Awsat.

“We have clear evidence from images engraved on temples’ walls that ancient Egyptians used their mouth as a third hand in some professions including shoe manufacturing,” he added.



Study Documents Extinction Threats to World's Freshwater Species

African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo
African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo
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Study Documents Extinction Threats to World's Freshwater Species

African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo
African tiger fish (Hydrocynus vittatus) swim in the Okavango river, Botswana in this undated handout picture. Michel Roggo/Handout via REUTERS/File Photo

Freshwater environments cover about 1% of Earth's surface while accounting for more than 10% of known species. Like many marine and terrestrial ecosystems, however, they are in distress. A new study looking at some of the denizens of freshwater habitats offers a stark illustration of this biodiversity predicament.

Researchers assessed the status of 23,496 species of freshwater animals in groups including fishes, crustaceans such as crabs, crayfish and shrimp and insects such as dragonflies and damselflies, finding 24% of them at a high risk of extinction, Reuters reported.

"Prevalent threats include pollution, dams and water extraction, agriculture and invasive species, with overharvesting also driving extinctions," said conservationist Catherine Sayer, lead author of the study published on Wednesday in the journal Nature.

Sayer heads the freshwater biodiversity unit at the International Union for Conservation of Nature (IUCN), the organization that tracks the status of species globally.

Some of the freshwater species deemed at high risk bear exotic names such as the mini blue bee shrimp of Sulawesi, the Seychelles duskhawker dragonfly, the Atlantic helicopter damselfly of Brazil, the daisy burrowing crayfish of Arkansas and fishes such as the shortnose sucker of Oregon and California and the humpbacked mahseer of India.

The study filled a gap in data on freshwater biodiversity. The studied species were selected because their diverse positions within food webs present a holistic view of the health of freshwater ecosystems globally.

These species inhabit inland wetlands such as lakes, rivers, swamps, marshes and peatlands - areas that the researchers said have been reduced by more than a third since 1970. Other research has documented the status of mammals, birds, reptiles and amphibians that share these freshwater ecosystems and often face their own unique threats.

Of the animal groups investigated in the new study, the highest threat levels were documented in the crustaceans (30% threatened) followed by the fishes (26%) and the dragonflies and damselflies (16%).

"Freshwater ecosystems are ecologically important because of the diversity of species they support. Some of them may have high numbers of species that are restricted just to those systems - a single lake or pool or river," said Northern Arizona University freshwater conservationist Ian Harrison, a member of the IUCN Species Survival Commission and a study co-author.

"They are also important in terms of the ecosystem services they supply: carbon sequestration in terms of peat bogs; food in terms of fisheries; medicines from plants; as well as cultural and aesthetic values. Freshwater reeds are used for building houses in some areas. Freshwater ecosystems contribute $50 trillion in value annually by their provision of natural processes supporting human well-being," Harrison said.

The researchers identified four places globally with the largest number of threatened freshwater species: Lake Victoria in Africa, Lake Titicaca in South America and regions in western India and Sri Lanka.

Lake Victoria, the world's second-largest freshwater lake by surface area, is bordered by Kenya, Tanzania and Uganda. The key threats identified to species were pollution, overfishing, agriculture and invasive species, particularly the Nile perch and water hyacinth. Lake Titicaca is situated on the border between Peru and Bolivia in the Andes. It was found to face a similar cadre of threats as Lake Victoria. Both lakes boast a rich diversity of fishes.

"There is an urgent need to focus on freshwater conservation to halt the decline in species, and this can be achieved through a more integrated management of water resources that can include the maintenance of ecosystem functions within the process of addressing the obviously important human needs for water," Harrison said.

"The particular value of this study is that it shows us which river basins, lakes, et cetera, are the ones where the conservation challenges are most urgent and serious," Harrison added. "And we can compare this to what we know about existing protections, and identify where there are gaps and where there are conservation needs. And it acts as a baseline of information from which we can track progress, to see if our actions are reducing threats."