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Popular vitamin D supplement may have an unexpected effect, experts warn

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Popular vitamin D supplement may have an unexpected effect, experts warn

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Vitamin D is known to be essential to many aspects of human health — but a new study suggests that taking a certain form of it can have a negative effect.

The more potent and longer-lasting form, vitamin D3 (cholecalciferol) is produced naturally when the body is exposed to sunlight and is also found in animal products, while vitamin D2 (ergocalciferol) comes from plant or fungal sources, per the National Institutes of Health.

Researchers from the University of Surrey in the U.K. found that taking vitamin D2 can cause reduced levels of vitamin D3 in the body.

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They made this determination by analyzing 11 randomized controlled trials including 655 adults, which showed that people taking vitamin D2 supplements had less vitamin D3 than those who did not take D2, according to a university press release.

The findings of the study — conducted along with the John Innes Centre and the Quadram Institute Bioscience in Norwich, England — were published in the journal Nutrition Reviews.

Vitamin D is known to be essential to human health — but a new study suggests that taking a certain form of it can have a negative effect. (iStock)

“Vitamin D supplements are important, especially between October and March, when our bodies cannot make vitamin D from sunlight in the U.K.,” lead researcher Emily Brown, a Ph.D. research fellow from the University of Surrey’s Nutrition, Exercise, Chronobiology & Sleep Discipline, stated in the press release.

“However, we discovered that vitamin D2 supplements can actually decrease levels of vitamin D3 in the body, which is a previously unknown effect of taking these supplements. This study suggests that, subject to personal considerations, vitamin D3 supplements may be more beneficial for most individuals over vitamin D2.”

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Previous research has suggested that the two forms of vitamin D are not interchangeable. A study published in Frontiers in Immunology, also conducted by the University of Surrey, found that vitamin D3 is more effective in boosting the immune system and protecting the body from viral and bacterial diseases, the release noted.

Some foods containing vitamin D3 include fatty fish, egg yolks, cod liver oil and fortified dairy and animal foods, health sources confirm.  (iStock)

“We have shown that vitamin D3, but not vitamin D2, appears to stimulate the type I interferon signaling system in the body – a key part of the immune system that provides a first line of defense against bacteria and viruses,” stated Professor Colin Smith, who led the above study. “Thus, a healthy vitamin D3 status may help prevent viruses and bacteria from gaining a foothold in the body.”

Professor Martin Warren, chief scientific officer at the Quadram Institute, confirmed in the release that vitamin D deficiency is a “significant public health concern,” particularly during the winter months. 

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“This collaborative research effort aligns well with the Quadram Institute’s mission to deliver healthier lives through food innovation to enhance the nutrient density of the food we eat,” he said. “Tackling this with the most effective form of vitamin D supplementation or fortification is of the utmost importance to the health of the nation.”

More research is needed to determine whether vitamins D2 and D3 affect the body differently — and whether that could change doctors’ medical advice on which type to take, the researchers concluded. (iStock)

More research is needed to determine whether vitamins D2 and D3 affect the body differently — and whether that could change doctors’ medical advice on which type to take, the researchers concluded.

There were several limitations to the analysis, the study findings noted.

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For example, there were only a small number of studies with many differences among them, such as their duration, the amount and timing of doses, and how results were measured. There was also the potential for biases due to incomplete reporting of details.

The results could also be affected by factors such as the amount of sunlight exposure, as well as some people taking supplements and others eating vitamin-fortified foods, the researchers noted.

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Some foods containing vitamin D3 include fatty fish, egg yolks, cod liver oil and fortified dairy and animal foods, health sources confirm. Vitamin D2 can be found in mushrooms, fortified foods and some plant/fungal-based supplements.

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The study was supported by the Biotechnology and Biological Sciences Research Council (BBSRC).

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Man’s extreme energy drink habit leads to concerning medical discovery, doctors say

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Man’s extreme energy drink habit leads to concerning medical discovery, doctors say

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Eight energy drinks per day may lead to serious health consequences, recent research suggests.

A relatively healthy man in his 50s suffered a stroke from the overconsumption of unnamed energy beverages, according to a scientific paper published in the journal BMJ Case Reports by doctors at Nottingham University Hospitals in the U.K.

The unnamed man was described as “normally fit and well,” but was experiencing left-side weakness, numbness and ataxia, also known as poor coordination or unsteady walking. 

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When the man sought medical attention, it was confirmed via MRI that he had suffered an ischemic thalamic stroke, the report stated.

The patient’s blood pressure was high upon admission to the hospital, was lowered during treatment and then rose again after discharge, even though he was taking five medications.

The 50-year-old man (not pictured) admitted to drinking eight energy drinks per day. (iStock)

The man revealed that he consumed eight cans of energy drink per day, each containing 160 mg of caffeine. His caffeine consumption had not been recorded upon admission to the hospital.

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Once the man stopped drinking caffeine, his blood pressure normalized, and he was taken off antihypertensive medications.

High caffeine content can raise blood pressure “substantially,” a doctor confirmed. (iStock)

Based on this case, the authors raised the potential risks associated with energy drinks, especially regarding stroke and cardiovascular disease.

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They also highlighted the importance of “targeted questioning in clinical practice and greater public awareness.”

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The authors say this case draws attention to the potential dangers of over-consuming energy drinks. (iStock)

Fox News senior medical analyst Dr. Marc Siegel reacted to the case study in an interview with Fox News Digital.

“This case report illustrates the high risk associated with a large volume of energy drink consumption, especially because of the high caffeine content, which can raise your blood pressure substantially,” said Siegel, who was not involved in the study.

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“In this case, the large amount of caffeine appears to have led directly to very high blood pressure and a thalamic stroke, which is likely a result of that soaring blood pressure.”

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Fox News Digital reached out to the case study authors and various energy drink brands for comment.

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5 Surprising Ozempic Side Effects Doctors Are Finally Revealing (Like Back Pain and Hair Loss)

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5 Surprising Ozempic Side Effects Doctors Are Finally Revealing (Like Back Pain and Hair Loss)


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Relationship coach blames Oprah for pushing family estrangement ‘for decades’

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Relationship coach blames Oprah for pushing family estrangement ‘for decades’

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Oprah Winfrey is shining a light on family estrangement, which she calls “one of the fastest-growing cultural shifts of our time” — but one expert says the media mogul helped fuel that very culture.

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“A Cornell University study now shows that almost one-third of Americans are actively estranged from a family member,” Winfrey said on a recent episode of “The Oprah Podcast,” referring to adult children going “no-contact” with parents, siblings or entire family systems.

Winfrey said the trend is a “silent epidemic” that can be especially relevant during the holidays.

ONE TOXIC BEHAVIOR KILLS RELATIONSHIPS, LEADING HAPPINESS EXPERT WARNS

But family and relationship coach Tania Khazaal, who focuses on fighting “cutoff culture,” took to social media to criticize Winfrey for acting as if the estrangement crisis appeared “out of thin air.”

“Now Oprah is shocked by the aftermath of estrangement, after being one of the biggest voices pushing it for decades,” Canada-based Khazaal said in an Instagram video, which drew more than 27,000 likes and 3,000 comments.

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Oprah Winfrey recently discussed what she called a “silent epidemic” of family estrangement on her podcast. (Theo Wargo/Getty Images)

Khazaal claimed that Winfrey’s messaging started in the 1990s and has contributed to a cultural shift where walking away became the first resort, not the last.

According to the relationship coach, millennials, some of whom grew up watching Oprah, are the leading demographic cutting off family members — and even if it wasn’t intentional, “the effect has absolutely been harmful,” Khazaal told Fox News Digital.

FAMILY BREAKUPS OVER POLITICS MAY HURT MORE THAN YOU THINK, EXPERT SAYS

The coach, who has her own history with estrangement, questioned why Winfrey is now treating the issue as a surprising crisis.

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“Now she hosts a discussion with estranged parents and estranged kids, speaking on estrangement like it’s some hidden, sudden, heartbreaking epidemic that she had no hand in,” she said in her video.

Nearly one-third of Americans are estranged from a family member, research shows. (iStock)

Khazaal said she believes discussions about estrangement are necessary, but insists that people shouldn’t “rewrite history.”

“Estrangement isn’t entertainment or a trending conversation piece,” she added. “It’s real families, real grief, parents dying without hearing their child’s voice.”

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Winfrey reportedly responded in the comments, writing, “Happy to have a conversation about it — but not on a reel. Will have my producer contact you if you’re interested.” But the comment was later deleted due to the backlash it received, Khazaal told Fox News Digital.

“I would still be open to that discussion,” Khazaal said. “The first thing I’d want her to understand is simple: Setting aside cases of abuse or danger, the family unit is the most sacred structure we have.” 

Experts emphasize that estrangement should be a last resort. (iStock)

“When children lose their sense of belonging at home, they search for it in the outside world,” she added. “That’s contributing to the emotional fragility we’re seeing today.”

Her critique ignited a debate online, with some social media users saying Khazaal is voicing a long-overdue concern.

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“The first time I heard, ‘You can love them from a distance’ was from Oprah … in the ’90s,” one woman said.

My son estranged himself from us for five years,” one mother commented. “The pain, hurt and damage never goes away.”

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Others, however, argued that Winfrey’s podcast episode was empathetic and that estrangement shouldn’t be oversimplified.

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Mental health experts say the conversation around estrangement is more complex than any single celebrity influence, and reflects broader cultural shifts.

Experts say today’s focus on boundaries and emotional well-being has reshaped family expectations. (iStock)

In the episode with Winfrey, Joshua Coleman, a California-based psychologist, said, “The old days of ‘honor thy mother and thy father,’ ‘respect thy elders’ and ‘family is forever’ has given way to much more of an emphasis on personal happiness, personal growth, my identity, my political beliefs, my mental health.” 

Coleman noted that therapists sometimes become “detachment brokers” by unintentionally green-lighting estrangement.

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Jillian Amodio, a licensed master’s social worker at the Maryland-based Waypoint Wellness Center, told Fox News Digital that while public figures like Winfrey help normalize these conversations, estrangement might just be a more openly discussed topic now.

“Estrangement used to be handled privately and quietly,” she said.

Winfrey’s take on family estrangement is prompting a broader discussion amid the holiday season. (iStock)

But even strained relationships can be fixed with the right support, experts say.

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Susan Foosness, a North Carolina-based clinical director of patient programs at Rula Health, said families can strengthen their relationships by working with a mental health professional to improve communication, learn healthier conflict-resolution skills, and build trust and empathy through quality time together.

“No family is perfect,” Foosness told Fox News Digital.

Khazaal agreed, saying, “Parents need to learn how to listen without slipping into justification, and children need help speaking about their pain without defaulting to blame or avoidance.”

Fox News Digital reached out to Winfrey for comment.

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