Share on Pinterest New research suggests that drinking a daily cup of dark tea can help control blood sugar and reduce your risk of type 2 diabetes by 47%. pixdeluxe/Getty ImagesA new study suggests that drinking dark tea daily may reduce the risk of developing type 2 diabetes.Dark tea consumption was linked with a 53% lower risk of prediabetes and 47% reduced risk of type 2 diabetes. Researchers suggest drinking dark tea increases glucose excretion in urine and improves insulin resistance. Experts say drinking dark tea is a good blood sugar management tool, but you should consider your overall diet too.
A cup of tea is a daily staple for many people around the world. Now, a new study has found that drinking dark tea specifically may reduce your diabetes risk.
Drinking dark tea every day may help to mitigate type 2 diabetes risk and progression in adults through better blood sugar control, according to new research shared at this years Annual Meeting of The European Association for the Study of Diabetes (EASD) in Hamburg.
Researchers from the University of Adelaide in Australia and Southeast University in China found that compared with never tea drinkers, daily consumers of dark tea had 53% lower risk for prediabetes and 47% reduced risk for type 2 diabetes.
This was even after taking into account established diabetes risk factors, such as age, gender, ethnicity, and body mass index (BMI).
The cross-sectional study included 1,923 adults. 436 of the participants were living with diabetes, 352 had prediabetes, and 1,135 had normal blood glucose levels. The cohort included non-habitual tea drinkers and those with a history of drinking only a single type of tea.
The researchers examined the association between both the frequency and type of tea consumption and the excretion of glucose in the urine, insulin resistance, and glycaemic status.
Commenting on the findings, co-lead author associate professor Tongzhi Wu said: Our findings hint at the protective effects of habitual tea drinking on blood sugar management via increased glucose excretion in urine, improved insulin resistance and thus better control of blood sugar. These benefits were most pronounced among daily dark tea drinkers.
So, is drinking dark tea daily an effective tool for reducing your risk of type 2 diabetes? Dark tea and diabetes risk: Whats the link?
Nutritionist Natalie Burrows is impressed by the findings. Im not hugely surprised by the findings as we know how antioxidant rich tea leaves are and how antioxidants and anti-inflammatory compounds can support vascular health and inflammation, she says.
However, the degree to which daily consumption of unsweetened dark tea can improve an individuals risk of type 2 diabetes is remarkable. It goes to illustrate once again how powerful nature can be when we consume natural foods.
Burrows says tea leaves have been shown to contain beneficial compounds that benefit the body in a multitude of ways.
Catechins, a polyphenol (AKA an antioxidant) which are found in tea have been shown to be responsible for the regulation of insulin, blood sugar, and energy metabolism by managing the signaling pathways, she explains.
The study suggests that drinking dark tea may contribute to a reduction in diabetes risk for two reasons. Firstly, it improves insulin resistance which means being better able to control your blood sugar.
Secondly, it contributes to increased glucose excretion in your urine, meaning there is less blood sugar to actually control.
Like Burrows, nutritionist Harry Snell believes this is down to the polyphenol content of dark tea.
He explains that the hypoglycemic effects of polyphenolic compounds may inhibit carbohydrate digestion, glucose absorption, and the stimulation of insulin secretion, all of which lead to better blood sugar control.What exactly is dark tea?
Its important to remember that the study looks at the effects of dark tea specifically. Its a kind of fully oxidized tea that shouldnt be confused with black tea.
Dark tea has undergone microbial fermentation, Snell explains. Its referred to as dark because the leaves are oxidized and change color, a bit like the rusting process with iron.
A common type of dark tea is Pu-erh from China which is available online and in health shops.
Explaining the differences between dark tea, and other popular tea types, Burrows says black tea is highly oxidized, whereas green tea is unoxidized.
Meanwhile, yellow tea is slightly fermented and dark tea is post-fermentation.
The addition of fermentation may play an important role in the impact dark tea has on blood sugar regulation, she explains.
So, would experts recommend dark tea as a blood sugar management tool?
The results are positive and drinking dark tea is certainly a low-resistance way to get potential important health effects. There is also the added benefit of hydration, which can affect glucose response, says Snell.
However, he believes there are some things to consider, including:The cost of specialist teaTaste (and the addition of sugar to change it)Availability (dark tea is not available in many supermarkets)
Similarly, Burrows would recommend dark tea as a blood sugar management tool but advises drinking it unsweetened.
Adding sugar or sweetener to tea will dissolve its recognized benefits for blood sugar, she warns.
I would also recommend enjoying different teas; dark, black, green, and white for all the various benefits they have on lowering blood sugar and improving inflammation and antioxidant status, she adds. Additional actions you can take that may help reduce your diabetes risk
One thing is clear: the foods and drinks we consume can play a major role in our health outcomes. The study shows that dark tea reduces diabetes risk, but its important to consider your diet as a whole.
No single thing is a cure by itself, Snell points out. Rather, as part of a healthy diet, many different foods can be used effectively to improve health markers.
With that in mind, how else can you reduce your diabetes risk through diet? Burrows says reducing your overall intake of sugar should be your first port of call. She recommends eliminating or swapping refined carbohydrates such as white bread, pasta, rice, and pastries.
Although these may not appear sugary, they break down to sugar during digestion, without the added benefit of fiber to slow the impact on blood sugar down.
Cutting out ultra-processed foods is another important step. These will only increase inflammation as they contain more sugar, salt, and fat. They have been linked to an increase in obesity, type 2 diabetes, and increased risk of heart attack and strokes too, Burrows explains.
Her advice is to eat as close to nature as possible. This, she explains, will encourage the consumption of whole foods with high fiber, antioxidants, and anti-inflammatory compounds that help to regulate blood sugar.
Finally, stay hydrated. Dehydration will increase your blood sugar levels, Burrows warns. The average person will require around two liters of water a day to replace what is used and lost during the usual function of the body, so drink up. Takeaway
The results of this new study linking daily dark tea consumption with a reduction in diabetes risk are certainly promising. Its also an easy and enjoyable way to do something good for your health.
However, its important to remember that no one food or drink is a magic bullet when it comes to your overall health.
By all means, drink dark tea daily, but its important to consider your diet as a whole, particularly when it comes to blood sugar control.
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Three women have been charged under the Terrorism Act after a van was driven into an external fence of a defence business in Edinburgh.
The incident happened at the Leonardo facility in Crewe Road North on Tuesday.
The three women – aged 31, 34 and 42 – who were earlier arrested under the Terrorism Act have been charged and are due to appear at Edinburgh Sheriff Court on Monday 21 July.
Police Scotland’s Counter Terrorism Unit are leading the investigation and enquiries are ongoing.
This breaking news story is being updated and more details will be published shortly.
ESPN baseball reporter. Covered the L.A. Rams for ESPN from 2016 to 2018 and the L.A. Angels for MLB.com from 2012 to 2016.
Less than two years ago, the Texas Rangers rode a potent offense to the first World Series championship in franchise history. Since then — on paper, at least — that group has only improved. Established sluggers were brought in. Young, promising players accrued more seasoning. Core stars remained in their primes. And yet, over the course of 10 baseball months since hoisting the trophy on Nov. 1, 2023, the Rangers have fielded one of the sport’s worst offenses, a sobering reality that continues to vex team officials.
The circumstances of 2025 have only intensified the frustration.
The Rangers have received Cy Young-caliber production from a rejuvenated Jacob deGrom, who had compiled fewer than 200 innings over the last four years. Their rotation went into the All-Star break with the second-lowest ERA in the major leagues. Their bullpen, practically rebuilt over one offseason, ranked third. Their defense (16 outs above average) was elite, as was their baserunning (10.8 runs above average). But the Rangers, despite back-to-back wins over the first-place Detroit Tigers this weekend, find themselves only a game over .500, seven games out of first place and 2 1/2 games out of a playoff spot, because they can’t do the one thing they were expected to do best: hit.
Bret Boone, the former All-Star second baseman who was installed as the team’s hitting coach in early May, has been tasked with fixing that — but he is also realistic.
“I’m not gonna come in here and ‘abracadabra,'” he said, waving his right arm as if wielding a magic wand. “That’s the big misnomer about hitting. Hitting is really hard. The bottom line is — you can prepare as much as you want, but when you get in the box, it’s just you and that pitcher.”
Boone isn’t here for an overhaul. He’s here to encourage. To simplify. One of his prevailing messages to players, he said, has been to “watch the game” — to put away the tablet, come up to the dugout railing and see how opposing pitchers are attacking other hitters. Boone has emphasized the importance of approaching each game with a plan, whatever that might be. He has occasionally blocked off the indoor batting cage, worried that hitters of this generation swing too often. And he has encouraged conversation.
“That’s what great offenses do,” Boone said. “They’re constantly interacting.”
There might not be a more interesting team to watch ahead of the trade deadline. Rangers president of baseball operations Chris Young is not one to give up on a season, particularly with a team this talented. But one more rough patch might force him to, at least to an extent. Young would prefer to add, but it’s hard to envision a way to improve the lineup from outside.
Any offensive improvement will probably come internally, signs of which emerged recently. The Rangers got Carter back from the bereavement list on July 4 and Langford back from the IL on July 5, making their lineup as close to whole as it has been all year. Over the ensuing week, they scored 53 runs in seven games heading into the All-Star break. Maybe it was a sign of things to come. Or, if recent history is any indication, a short burst of false promise.
Below is a look at five numbers that define the Rangers’ surprising offensive downturn.
1. Semien and Seager’s combined OPS on June 22: .671
The Rangers’ rise began in late November 2021, just before the sport shut down in the leadup to an ugly labor fight, when Semien and Seager secured contracts totaling $500 million. Their deals came within days of each other, ensuring they’d share a middle infield for years to come. And when the Rangers won it all in 2023, it was Semien and Seager hitting back-to-back at the top of the lineup, setting the tone for an offense that overwhelmed teams in October.
Some things haven’t changed: Semien and Seager are still the driving forces of this offense. For most of this year, though, that hasn’t been a positive thing.
As late as June 22, with the Rangers 78 games into their season, Semien and Seager had combined for a .229/.312/.359 slash line. Their combined OPS, .671, sat 44 points below the league average.
Semien, traditionally a slow starter, finished the month of May with the second-lowest slugging percentage among qualified hitters and at times batted ninth. Seager made two separate trips to the IL because of the same right hamstring strain and eventually fell out of whack, batting .188 in June. If the Rangers are looking for good news, though, it’s that Semien and Seager finally got going in the leadup to the All-Star break. From June 23 to July 13 — with Seager and Semien settling into the No. 2 and No. 3 spots, respectively — they slashed .313/.418/.592.
“We all want to be on at the same time,” Semien said. “It’ll never happen like that, but if Corey and I are on, this team goes.”
2. Texas’ slash line against fastballs: .236/.312/.372
One of the Rangers’ coaches recently recalled some of the most iconic homers from the team’s championship run — García’s grand slam in the American League Championship Series, and Seager’s blasts against Houston’s Cristian Javier and Arizona’s Paul Sewald.
They all had one thing in common: turning on high fastballs and pulverizing them.
The Rangers were one of the best fastball-hitting teams in 2023. That has been far from the case since. The Rangers slashed just .233/.315/.379 against four-seam fastballs in 2024, worse than every team except the Chicago White Sox, who lost a record 121 games. This year, it isn’t much better.
The Rangers’ slash line against four-seamers was only .236/.312/.372 heading into the All-Star break, good for a .684 OPS that ranked 27th in the majors. Burger (.473 OPS), Heim (.500), Pederson (.620) and García (.660) were especially vulnerable. Against four-seamers that were elevated, no team had a higher swing-and-miss percentage than Texas (55.5%).
Being in position to hit the fastball has been one of the points of emphasis from the hitting coaches in recent weeks. It doesn’t mean every hitter will look fastball first — approaches are individualistic and often alter based on matchups — but it does underscore the importance of narrowing the focus. Opposing pitchers are too good these days. Hitters can’t account for everything. And the best offenses are able to take something away from an opposing pitching staff. The 2023 team took away the fastball as an attack weapon. But the Rangers, in the words of one staffer, have been “stuck in between” ever since — late on velocity and off balance against spin.
It’s a tough way to live.
3. Rangers’ chase rate with RISP: 32.2%
When asked about the biggest difference between the 2023 offense and the 2025 version, Rangers manager Bruce Bochy mentioned the approach in run-scoring opportunities. The team from two years ago, he said, was much better at situational hitting with runners in scoring position. This team seems to chase too much in those situations.
The numbers bear that out.
The Rangers’ chase percentage with runners in scoring position was 32.2% coming out of the All-Star break, fourth worst in the major leagues. Their strikeout percentage, 23.7%, was fifth worst. Their slash line, .230/.304/.357, was down there with some of the worst teams in the sport. The Rangers’ lineup has some strikeout in it — with Burger, Jung and García at the top of that list — but team officials believe it should be much better adept at driving in runs.
Not being able to has led to some dramatic highs and lows. The Rangers have scored eight or more runs 13 times, including two instances over a 72-hour stretch in which they hung 16 runs on the Minnesota Twins. But there have also been 25 games in which they have been held to one or zero runs, third most in the major leagues.
4. Carter’s and Jung’s wOBA ranks since 2023: 205th and 264th
Entering the second half, 380 players had accumulated at least 300 plate appearances since the start of the 2024 season. Among them, Carter ranked 205th with a .308 weighted on-base average. Jung, with a .295 wOBA, ranked 264th.
Jung looked like a budding star at third base in 2023, making the All-Star team and finishing fourth in AL Rookie of the Year voting. Carter came up in September and surged throughout October. With those two and Langford, Texas’ draft pick at No. 4 earlier that summer, the Rangers had three young, controllable players they could surround with their long list of established stars. It seemed unfair, yet it hasn’t come close to panning out.
Carter struggled through the first two months of 2024, was diagnosed with a stress reaction in his back, couldn’t fully ramp back up, got shut down for good in August, didn’t look right the following spring training and started the 2025 season in Triple-A. Carter appeared in just 45 games in 2024. Jung played in only one more, after a wrist fracture held him out for most of the first four months.
Then came a stretch of 101 plate appearances this June during which Jung notched just 15 hits, 5 walks and 27 strikeouts. Eight of those strikeouts came over his last four games, when his chase rate jumped to 45.9% — 12 percentage points above his career average. A Rangers source described him as “defeated” and “lost.”
On the second day of July, Jung was optioned to Triple-A Round Rock.
5. Rangers’ wRC+ since 2023: 94
There might not be a better representation of the Rangers’ drop-off than weighted runs created plus, which attempts to quantify total offensive value by gathering every relevant statistic, assigning each its proper weight and synthesizing it all into one convenient, park- and league-adjusted metric. The league average is 100, with every tick above or below representing a percentage point better or worse than the rest of the sport at that time.
During the 2023 regular season, the Rangers put together 117 wRC+. In other words, their offense was 17% above league average. Only one team — the Atlanta Braves, another currently underperforming club — was better. From the start of the 2024 season to the start of the 2025 All-Star break, the Rangers compiled a 94 wRC+, putting them 6% below the league average. Only eight teams were worse.
Five every-day players from that 2023 team are still on the Rangers — not counting Carter, who didn’t come up until September — and all of them have seen their OPS drop by more than 100 points. Seager? 1.013 OPS in 2023, .856 OPS since. García? .836 in 2023, .681 since. Heim? .755 in 2023, .605 since. Semien? .826 in 2023, .693 since. Jung? .781 in 2023, .676 since.
For Young, it’s not just the individual performances but how they coalesce.
“What we had was just a really balanced approach and a collective mindset in terms of the way we were attacking the opposing pitcher,” Young, in his fifth season as the head of baseball operations, said of the 2023 offense. “We had other guys who could grind out at-bats. We had guys who could hit for average. We had guys who slugged. And I still think we have that in our lineup. It’s just, for whatever reason, a number of them have had bad years to start the season. When you have a couple guys having down years, you can survive. When you have a majority of them having down years, it’s magnified. And then guys start pressing and putting pressure on themselves, and it makes it even harder.”