Grapes Reduce Health Risk, New Study Finds

A worker harvests grapes at a vineyard in the Georgian village of Arkhiloskalo some 150 kilometers outside of Tbilisi, on September 20, 2020. Photo: AFP.
A worker harvests grapes at a vineyard in the Georgian village of Arkhiloskalo some 150 kilometers outside of Tbilisi, on September 20, 2020. Photo: AFP.
TT
20

Grapes Reduce Health Risk, New Study Finds

A worker harvests grapes at a vineyard in the Georgian village of Arkhiloskalo some 150 kilometers outside of Tbilisi, on September 20, 2020. Photo: AFP.
A worker harvests grapes at a vineyard in the Georgian village of Arkhiloskalo some 150 kilometers outside of Tbilisi, on September 20, 2020. Photo: AFP.

Looking for a snack? Well, have some grapes. As our terrible pun suggests, grapes might be the fruit to go for. That’s not just because they’re tasty, to be clear. According to a report by The Metro newspaper, a new study has found that snacking on grapes could lower your risk of heart attack or stroke.

This is because – as with most fruit and veggies – grapes are loaded with nutrients that can improve health. Specifically, the research suggests that grapes are a ‘superfood’ thanks to chemicals that boost gut bacteria and lower cholesterol. The research team tracked 19 people between the ages of 21 to 55, asking them to consume around 40 grapes a day.

These participants were on a diet that was otherwise low in fiber and plant chemicals (polyphenols), so the scientists could focus in on the benefits of grapes alone. Within a month, the diversity of the group’s gut microbiome was higher, which is a fancier way of saying that inside their tummy were loads more healthy bacteria. Even better, they had almost 8 percent less ‘bad’ cholesterol, and levels of beneficial bacteria Akkermansia – which burns up sugar and cholesterol – increased.

Lead author Professor Zhaoping Li, of the University of California, Los Angeles, said: “We found grapes have a beneficial effect on gut bacteria, which is great news, since a healthy gut is critical to good health. This study deepens our knowledge and expands the range of health benefits for grapes. It reinforces the heart health benefits of grapes, which include lowering cholesterol.”

Now, it’s worth noting that this study is teeny-tiny, and the researchers didn’t repeat their findings with other fruit and veggies to definitively declare which one is the absolute best. So please don’t go on an all-grape diet and think you’re doing yourself a load of good – you’re not. Variety is key. But if you do fancy adding some grapes to your afternoon snack of biscuits, that could be a great shout.



These Canadian Rocks May Be the Oldest on Earth

A close-up view of metagabbroic rocks from the Nuvvuagittuq greenstone belt in Nunavik, Quebec, Canada, that are 4.16 billion years old is seen in this photograph released on June 26, 2025. (Jonathan O'Neil/Handout via Reuters)
A close-up view of metagabbroic rocks from the Nuvvuagittuq greenstone belt in Nunavik, Quebec, Canada, that are 4.16 billion years old is seen in this photograph released on June 26, 2025. (Jonathan O'Neil/Handout via Reuters)
TT
20

These Canadian Rocks May Be the Oldest on Earth

A close-up view of metagabbroic rocks from the Nuvvuagittuq greenstone belt in Nunavik, Quebec, Canada, that are 4.16 billion years old is seen in this photograph released on June 26, 2025. (Jonathan O'Neil/Handout via Reuters)
A close-up view of metagabbroic rocks from the Nuvvuagittuq greenstone belt in Nunavik, Quebec, Canada, that are 4.16 billion years old is seen in this photograph released on June 26, 2025. (Jonathan O'Neil/Handout via Reuters)

Scientists have identified what could be the oldest rocks on Earth from a rock formation in Canada.

The Nuvvuagittuq Greenstone Belt has long been known for its ancient rocks — plains of streaked gray stone on the eastern shore of Hudson Bay in Quebec. But researchers disagree on exactly how old they are.

Work from two decades ago suggested the rocks could be 4.3 billion years old, placing them in the earliest period of Earth's history. But other scientists using a different dating method contested the finding, arguing that long-ago contaminants were skewing the rocks' age and that they were actually slightly younger at 3.8 billion years old.

In the new study, researchers sampled a different section of rock from the belt and estimated its age using the previous two dating techniques — measuring how one radioactive element decays into another over time. The result: The rocks were about 4.16 billion years old.

The different methods "gave exactly the same age,” said study author Jonathan O'Neil with the University of Ottawa.

The new research was published Thursday in the journal Science.

Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed. Primordial rocks often get melted and recycled by Earth's moving tectonic plates, making them extremely rare on the surface today. Scientists have uncovered 4 billion-year-old rocks from another formation in Canada called the Acasta Gneiss Complex, but the Nuvvuagittuq rocks could be even older.

Studying rocks from Earth's earliest history could give a glimpse into how the planet may have looked — how its roiling magma oceans gave way to tectonic plates — and even how life got started.

“To have a sample of what was going on on Earth way back then is really valuable,” said Mark Reagan with the University of Iowa, who studies volcanic rocks and lava and was not involved with the new study.

The rock formation is on tribal Inukjuak lands and the local Inuit community has temporarily restricted scientists from taking samples from the site due to damage from previous visits.

After some geologists visited the site, large chunks of rock were missing and the community noticed pieces for sale online, said Tommy Palliser, who manages the land with the Pituvik Landholding Corp. The Inuit community wants to work with scientists to set up a provincial park that would protect the land while allowing researchers to study it.

“There's a lot of interest for these rocks, which we understand,” said Palliser, a member of the community. “We just don't want any more damage.”