Should You Take a Vitamin D Supplement?

Vitamin D does a lot for your body, supporting strong bones, muscle movement, your immune system, and more. Taking a vitamin D supplement may seem like a quick and easy way to boost these benefits—but doctors say there are a few things to know first.

“There’s no question that vitamin D is essential for good health,” says Dr. JoAnn Manson, chief of the division of preventive medicine at Brigham and Women’s Hospital who researches vitamin D supplementation. “The question is: Do we really need to take supplements?”

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Vitamin D supplements are mostly recommended when you’re deficient. In the U.S., 35% of adults are vitamin D deficient, according to the National Library of Medicine. People who are obese, over 65, or have darker skin may be more at risk for deficiency—and about 50% to 60% of nursing home residents and patients in hospitals are vitamin D deficient.

Here’s what experts say about taking vitamin D.

The many sources of vitamin D

Vitamin D ..

Scientists may have discovered why the pounds come back after losing weight

Many factors lead to the frustrating cycle of weight gain and weight loss — but the driving force may be fat cells keeping a memory of obesity.
That’s according to a recent study that was first published in the journal Nature last fall.
Researchers say that fat cells influence abnormal metabolic pathways in the body long after pounds are shed, which could make it more likely for people to regain weight.
STUDY DIRECTLY COMPARES ZEPBOUND AND WEGOVY FOR WEIGHT-LOSS RESULTS
The team of Swiss scientists were curious whether regaining weight after slimming down is due to «metabolic memory,» where the body remembers and strives to return to its former state of obesity.
They analyzed chemical markers on fat cells in mice who were fed a high-fat diet. Next, when the mice were fed only a standard meal, the researchers analyzed their fatty tissue after they had lost weight, according to the study write-up.
The team then compared these samples to a lean mice group that was fed a standard meal to s..

CDC Stops Recommending COVID-19 Vaccines for Pregnant Women and Children

The U.S. Centers for Disease Control and Prevention (CDC) is no longer recommending the COVID-19 vaccine for pregnant women and healthy children, the U.S. Secretary of Health and Human Services (HHS) Robert F. Kennedy Jr. announced in a video on his X account on May 27. “We’re now one step closer to realizing President Trump’s promise to Make American Healthy Again,” said Kennedy, who was flanked by Dr. Martin Makary, commissioner of the Food and Drug Administration (FDA), and Dr. Jay Bhattacharya, head of the National Institutes of Health.

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The announcement reverses previous CDC advice. At the time of the announcement, the CDC’s webpage still contained its earlier recommendation that everyone ages six months and older get vaccinated, and that “getting the 2024-2025 COVID-19 vaccine is especially important if you are pregnant, breastfeeding, trying to get pregnant, or might become pregnant in the future.”

Public-health experts immediately pushed back ..

American honeymoon hotspot hit by highly contagious illness, health officials warn

While cases of measles continue to spread throughout the U.S., Hawaii is reporting a new type of infectious spread.
Pertussis, also known as whooping cough, is on the rise at a «worrying rate» in the Aloha State, the State of Hawaii Department of Health (DOH) confirmed last week in a news release.
As of May 15, there have been 108 cases of pertussis reported, already exceeding the 84 total cases in 2024.
CDC REMOVES COVID VACCINE RECOMMENDATION FOR HEALTHY CHILDREN AND PREGNANT WOMEN
The DOH labeled pertussis a «highly contagious respiratory disease» that spreads through the air when an infected individual coughs or sneezes.
Symptoms often resemble a cold but can progress to «intense coughing fits.»
For children, these coughing fits can be followed by a «deep breath» that makes a «whooping» sound.
«Health complications can be serious and even life-threatening, especially for infants and young children who are not fully vaccinated,» the DOH warned.
Complications can include pneumonia, s..

Should You Take Amino Acid Supplements? 

Amino acid supplements have soared in popularity in recent years. Social-media influencers peddle them with promises that they’ll build muscle, enhance athletic performance, promote weight loss, boost metabolism, and improve mental focus. But they’re not right for everyone. Here’s what to know about the trendy supplements.

What are amino acids?

Amino acids are the building blocks of protein, and there are a total of 20. Nine essential amino acids—histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine—are available only through foods or supplements. “You can’t store amino acids in your body, so if you have a diet that’s unhealthy, you’re not going to get all the amino acids your body needs,” says Joan Salge Blake, a clinical professor of nutrition at Boston University and host of the nutrition and health podcast Spot On!

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There are also 11 non-essential amino acids—alanine, arginine, asparagine, aspartic ..

CDC removes COVID vaccine recommendation for healthy children and pregnant women

The COVID-19 vaccine is no longer recommended for healthy children or pregnant women, according to new guidance from health officials.
HHS Secretary Robert F. Kennedy Jr. shared a video on X Tuesday announcing that the Centers for Disease Control and Prevention (CDC) has removed the vaccines from the CDC's recommended immunization schedule for those groups.
US SEES CASES OF NEW COVID-19 VARIANT LINKED TO SURGE IN CHINA: REPORT
«Last year, the Biden administration urged healthy children to get yet another COVID shot, despite the lack of any clinical data to support the repeat booster strategy in children,» said Kennedy in the video, in which he appears alongside FDA Commissioner Dr. Marty Makary and NIH Director Jay Bhattacharya.
«That ends today — it's common sense and it's good science,» Bhattacharya added.
Makary also chimed in, noting that there's no evidence healthy kids need the COVID vaccine and that most countries have stopped recommending it for children.
C..

Zone 2 training: The trending workout that burns fat without intense exercise

An exercise that takes a more mild approach while offering all the fat-burning benefits of a more grueling workout might sound too good to be true.
But some claim that the trending «Zone 2» training, commonly known as the «fat-burning zone,» offers just that.
What is this form of exercise — and can it work for anyone?
STUDY REVEALS EXERCISING EVERY DAY MAY NOT BE NECESSARY: 'BETTER THAN NONE'
«Zone training is generally defined by someone's proximity to their maximum heart rate,» Carmine Ciliento, a fitness manager at Crunch Fitness in New York, told Fox News Digital.
The zone-based training method measures how hard the body is working and how it's using energy.
Different zones burn different compounds in the body, according to Ciliento.
«Zone 2 is working out at about 60% to 70% of someone’s maximum heart rate,» he said.
STAY FIT IN YOUR 40S AND BEYOND WITH THESE SMART WORKOUT TIPS
The most common way to determine heart rate is to subtract a person's age from..

Beer drinkers beware: Scientists find ‘forever chemicals’ exceeding EPA limits in American brews

Recent studies have found that some beers brewed in the US have high levels of «forever chemicals» and are considered above the allowed EPA limit.
A team from the ACS’ Environmental Science & Technology conducted a study to find out how polyfluoroalkyl substances (PFAS) or «forever chemicals» get into beers and how much they contain.
«As an occasional beer drinker myself, I wondered whether PFAS in water supplies was making its way into our pints. I hope these findings inspire water treatment strategies and policies that help reduce the likelihood of PFAS in future pours,» research lead Jennifer Hoponick Redmon said.
ALCOHOL DEATHS HAVE MORE THAN DOUBLED IN RECENT YEARS, ESPECIALLY AMONG WOMEN
While breweries have water filtration and treatment systems, these are not designed to prevent PFAS from entering into the batch.
By modifying an EPA testing tool for analyzing levels of PFAS in drinking water, Redmon and her team tested 23 beers.
NOT ONLY DOES BEER TASTE GREAT, THERE ARE HEALTH ..

Common daily vitamin could slow biological aging, major study suggests

Vitamin D might be doing more than just supporting bone health — it could also help the body age slower, according to a new study led by researchers at Mass General Brigham (MGB) and the Medical College of Georgia.
The study, published this month in The American Journal of Clinical Nutrition, reveals that taking vitamin D supplements may protect against biological aging by slowing the shortening of telomeres, the tiny caps on DNA that naturally erode as people grow older.
Conducted as part of a nationwide four-year trial, the study tracked over 1,000 U.S. adults (men over 50 and women over 55) and found that daily vitamin D3 could reduce biological wear and tear, equivalent to nearly three years of aging, according to a press release from MGB.
COLORECTAL CANCER RISK REDUCED BY THIS COMMON VITAMIN, STUDY SUGGESTS
Participants were randomly assigned to take either a placebo or a daily dose of vitamin D3 (2,000 IU) and omega-3 fatty acids (1 gram).
Telomere length in white blood cells wa..

Study directly compares Zepbound and Wegovy for weight-loss results

Weight-loss medications continue to grow in popularity as an anti-obesity tool — but are some more effective than others?
The question was explored in a new study published this month in The New England Journal of Medicine.
Researchers compared the safety and efficacy of tirzepatide (brand name Zepbound) and semaglutide (brand name Wegovy) in a 72-week clinical trial.
WEIGHT-LOSS MEDICATIONS MAY ALSO BENEFIT COMMON MEDICAL PROBLEM, STUDY FINDS
The randomized, controlled trial — called SURMOUNT-5 — included 751 people throughout the U.S. and Puerto Rico who had obesity but not type 2 diabetes.
«Doctors, insurance companies and patients are always asking, ‘Which drug is more effective?’» said Dr. Louis Aronne, director of the Comprehensive Weight Control Center and the Sanford I. Weill Professor of Metabolic Research at Weill Cornell Medicine, in the release. «This study allowed us to do a direct comparison.»
«The results are consistent with — in fact, almost identical to — what we’ve s..