Apple cider vinegar helps with weight loss: Myth or fact?

Agencies
July 21, 2017

Atlanta, Jul 21: If you have ever searched the Internet for weight loss information, you would have definitely come across the following tip: Apple cider vinegar has been considered beneficial when it comes to keeping your weight down.applecider

But is it true?

"A lot of this is marketing," nutritionist Lisa Drayer said, "and it's been around a long time. I remember, probably 15 years ago, covering the apple cider vinegar diet. When you looked closely, the diet paired apple cider vinegar pills with a low-calorie menu. It's no wonder people lost weight.

"So I think there's been a lot of advertising about the benefits of apple cider vinegar for weight loss," she added, "and consumers get those messages, and they think, 'Oh, this must be the next magic bullet.' But whether it's based on science is another matter."

-What's the research say?

A lot of the research on vinegar's relationship with weight loss is in animals, mainly mice and rats. Studies show that acetic acid, the main component of apple cider vinegar, can suppress body fat accumulation and metabolic disorders in obese rats. But of course, mice are not men, and rats are not women, so these findings prove little.

Studies in humans have been small, which limits their validity.

"But they do suggest a weight loss from apple cider vinegar is plausible," Drayer said. "For example, some research suggests that it might promote satiety and make you consume fewer calories throughout the day."

A 2005 study of 12 people found that to be true when vinegar was consumed with a bread meal. A 2013 study of 16 folks found the same, but only because the vinegar caused nausea when ingested. "On this basis, the promotion of vinegar as a natural appetite suppressant does not seem appropriate," that study concludes.

The most-cited study to prove a connection to weight loss was done in 2009 with 175 "obese" Japanese subjects, ages 25 to 60, who were split into three groups. Considered "obese" by Japanese standards, each subject's BMI was between 25 and 30; in the United States, people aren't considered obese until their BMI exceeds 30. Anyone who had high cholesterol or diabetes or was using medications was excluded.

Over a 12-week period, the groups consumed a beverage that contained either one tablespoon of vinegar, two tablespoons of vinegar or no vinegar at all. At the end of the three months, those who consumed any amount of vinegar had a lower body weight, a smaller body mass index, less visceral fat, a smaller waist measurement and lower triglyceride levels than the placebo group that drank no vinegar.

That sounds fantastic until you look closely at the amount of weight that was lost.

"Only 2 to 4 pounds in three months over a placebo," Drayer explained. "That's only a third of a pound a week. Most diets have a much bigger result. So you would you definitely have to do many other things to accomplish any significant weight loss."

Dietitian Carol Johnston has been studying the effects of acetic acid on diabetic blood glucose levels since 2004. While she believes the Japanese study's findings make sense due to animal research, she too is quick to point out that the weight loss in humans was "very, very modest."

"In fact, I would say most people who are on a diet for 12 weeks and only lose a couple of pounds aren't going to be very happy," Johnston said.

-Regulating blood sugar

Where Johnston's research has shown significant benefits from vinegar, however, is in blood sugar control. Over the years, she's done a number of studies that show vinegar helps control blood sugar spikes for people with type 2 diabetes and those who are prediabetic, also known as insulin-resistant. She's even seen a slight benefit for healthy control subjects.

"Vinegar had an impact in all groups, but the most significant impact was in the prediabetic group," she said. "In prediabetics, it was too good to be true; (blood sugar) fell a good bit and stayed that way. It may be this is the group that could benefit the most."

The theory, according to Johnston, is that acetic acid appears to interfere with enzymes that break down starch molecules. This antiglycemic response can be induced by any sort of vinegar, such as red and white wine vinegars, pomegranate vinegar or even white distilled vinegar. It's the acetic acid in the vinegar, not the type, that produces the result.

"Basically, what acetic acid is doing is blocking the absorption of starch," said Johnston, who is associate director of the Arizona State University's School of Nutrition and Health. "If my study subjects eat a starch and add vinegar, glucose will go down. But if they drink sugar water and add vinegar, nothing happens. So if you're having bacon and eggs, don't bother. It only helps if you are consuming a starch."

It's possible that blocking starch absorption may help with weight loss as well, Drayer says, because starches cause blood sugar spikes and therefore act as an appetite stimulant.

"So if acetic acid is interfering with the breakdown of starch, what that means is that starch is not being digested," she explained. "If it's not getting digested, it's not causing the same rise in blood sugar, which can help control appetite. And if it's not being digested, it's not being absorbed into the bloodstream, and therefore it's not contributing to calories."

-The jury is still out

Though the research on acetic acid's benefits looks promising, nothing's definitive. It could be that other elements in apple cider and other vinegars also play a role. Take the trace chemicals in vinegar that vary based on where each brand was fermented.

"It could be that some of those ingredients are important or part of the effect we are seeing," Johnson said. She added that it will take much larger randomized scientific trials to prove any cause and effect between vinegar and weight loss, and especially between vinegar and diabetes or cardiovascular risks.

"Somebody, probably the federal government, is going to have to fund a multimillion-dollar grant and recruit hundreds of people at risk for diabetes and metabolic disorders to truly determine if vinegar is going to make a difference," Johnston said.

But until those occur, Johnston sees no harm in using vinegar to control blood sugars after starchy meals. After all, balsamic and wine vinegars are part of the Mediterranean diet, long associated with heart health and other benefits.

"Even in healthy people, that post-meal surge in blood sugar is a risk factor for heart disease, so in my mind, everyone should take advantage of the benefit that vinegar may provide. But I'd do it the way people have done for centuries, by adding it to their food," she said.

"What I would recommend is using salad dressings that contain vinegar, as it contains no calories," Drayer agreed. "When you make a dressing, use three parts oil to one part vinegar. Or reverse it and do one part oil and three parts vinegar."

You can also use it with food preparation, says Drayer.

"Dip your chicken with egg whites and bread crumbs mixed with balsamic vinegar for poultry or fish," she said. "Or you can drink it in water, which is good, as water makes you feel full."

But she stresses that if you choose to drink your vinegar, make sure that the tablespoon is added to a full glass of water. Properly diluting vinegar is key. Otherwise, it can damage your teeth, throat and stomach lining.

"Vinegar has that strong smell and puckering taste, so if you take a breath, you could inhale it into your lungs and burn those a little, because it's an acid," Johnston said. "So never drink it straight. Dilute it in water, and drink before you eat or with the first bites of your meal.

"You want the acetic acid in stomach before the meal to do the most good," she said. "Mediterranean people ate the salad with vinegar, then they ate the pasta."

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
July 7,2020

The World Health Organization (WHO) is reviewing a report that suggested its advice on the novel coronavirus needs updating after some scientists told the New York Times there was evidence the virus could be spread by tiny particles in the air.

The WHO says the Covid-19 disease spreads primarily through small droplets, which are expelled from the nose and mouth when an infected person breaths them out in coughs, sneezes, speech or laughter and quickly sink to the ground.

In an open letter to the Geneva-based agency, 239 scientists in 32 countries outlined the evidence they say shows that smaller exhaled particles can infect people who inhale them, the newspaper said on Saturday.

Because those smaller particles can linger in the air longer, the scientists - who plan to publish their findings in a scientific journal this week - are urging WHO to update its guidance, the Times said.

"We are aware of the article and are reviewing its contents with our technical experts," WHO spokesman Tarik Jasarevic said in an email reply on Monday to a Reuters request for comment.

The extent to which the coronavirus can be spread by the so-called airborne or aerosol route - as opposed to by larger droplets in coughs and sneezes - remains disputed.

Any change in the WHO's assessment of the risk of transmission could affect its current advice on keeping one-metre physical distancing. Governments, which also rely on the agency for guidance policy, may also have to adjust public health measures aimed at curbing the spread of the virus.

"Especially in the last couple of months, we have been stating several times that we consider airborne transmission as possible but certainly not supported by solid or even clear evidence," Benedetta Allegranzi, the WHO's technical lead for infection prevention and control, was quoted as saying in the New York Times.

WHO guidance to health workers, dated June 29, says that SARS-CoV-2, the virus that causes Covid-19, is primarily transmitted between people through respiratory droplets and on surfaces.

But airborne transmission via smaller particles is possible in some circumstances, such as when performing intubation and aerosol-generating procedures, it says.

Medical workers performing such procedures should wear heavy-duty N95 respiratory masks and other protective equipment in an adequately ventilated room, the WHO says.

Officials at South Korea's Centers for Disease Control said on Monday they were continuing to discuss various issues about Covid-19, including the possible airborne transmission. They said more investigations and evidence were needed.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
June 12,2020

Global poverty could rise to over one billion people due to the COVID-19 pandemic and more than half of the 395 million additional extreme poor would be located in South Asia, which would be the hardest-hit region in the world, according to a new report.

Researchers from King's College London and Australian National University published the new paper with the United Nations University World Institute for Development Economics Research (UNU-WIDER) said that poverty is likely to increase dramatically in middle-income developing countries and there could be a significant change in the distribution of global poverty.

The location of global poverty could shift back towards developing countries in South Asia and East Asia, the report said.

The paper, 'Precarity and the Pandemic: COVID-19 and Poverty Incidence, Intensity and Severity in Developing Countries,' finds that extreme poverty could rise to over one billion people globally as a result of the crisis.

The cost of the crisis in lost income could reach USD 500 million per day for the world's poorest people, and the intensity and severity of poverty are likely to be exacerbated dramatically.

The report said that based on the USD 1.90 a day poverty line and a 20 per cent contraction, more than half of the 395 million additional extreme poor would be located in South Asia, which would become the hardest hit region in the world mainly driven by the weight of populous India followed by sub-Saharan Africa which would comprise 30 per cent, or 119 million, of the additional poor.

The report added that as the value of the poverty line increases, a larger share of the additional poor will be concentrated in regions where the corresponding poverty line is more relevant given the average income level.

For instance, the regional distribution of the world's poor changes drastically when looking at the USD 5.50 a day poverty line the median poverty line among upper-middle-income countries.

At this level, almost 41 per cent of the additional half a billion poor under a 20 per cent contraction scenario would live in East Asia and the Pacific, chiefly China; a fourth would still reside in South Asia; and a combined 18 per cent would live in the Middle East and North Africa (MENA) and in Latin America and the Caribbean (LAC), whose individual shares are close to that recorded for sub-Saharan Africa.

India plays a significant role in driving the potential increases in global extreme poverty documented previously, comprising almost half the estimated additional poor regardless of the contraction scenario, the report said.

Nonetheless, there are other populous, low and lower-middle- income countries in South Asia, sub-Saharan Africa, and East Asia and the Pacific accounting for a sizeable share of the estimates: Nigeria, Ethiopia, Bangladesh, and Indonesia come next, in that order, concentrating a total of 18 19 per cent of the new poor, whereas the Democratic Republic of Congo, Tanzania, Pakistan, Kenya, Uganda, and the Philippines could jointly add 11 12 per cent.

Taken together, these figures imply that three quarters of the additional extreme poor globally could be living in just ten populous countries.

The report added that this high concentration of the additional extreme poor is staggering , although not necessarily unexpected given the size of each country's population.

On one hand, data shows that three of these ten countries (Ethiopia, India, and Nigeria) were among the top ten by number of extreme poor people in 1990 and remained within the ranks of that group until 2018.

Despite this crude fact, two of these countries have managed to achieve a sustained reduction in their incidence of poverty since the early 1990s, namely Ethiopia and India, reaching their lowest poverty headcount ratio ever recorded at about 22 and 13 per cent, respectively. Nonetheless, the potential contraction in per capita income/consumption imposed by the pandemic's economic effects could erase some of this progress.

The researchers are now calling for urgent global leadership from the G7, G20, and the multilateral system, and propose a three-point plan to address the impact of the COVID-19 on global poverty quickly.

Professor of International Development at King's College London and a Senior Non-Resident Research Fellow at UNU-WIDER Andy Sumner said the COVID-19 crisis could take extreme poverty back over one billion people because millions of people live just above poverty.

Millions of people live in a precarious position one shock away from poverty. And the current crisis could be that shock that pushes them into poverty.

Professor Kunal Sen, Director of UNU-WIDER said the new estimates about the level of poverty in the world and the cost of the COVID-19 pandemic to the world's poor are sobering.

We cannot stand by and see the hard work and effort of so many be eradicated. We will know what the real impact is in time, but the necessary action to ensure we achieve the Sustainable Development Goals by 2030 needs to be planned now, Sen said.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
February 4,2020

Toronto, Feb 4: People who text while walking face a higher risk of an accident than those listening to music or talking on the phone, a study has found.

The study, published in the journal Injury Prevention, found that smartphone texting is linked to compromised pedestrian safety, with higher rates of 'near misses', and failure to look left and right before crossing a road.

Researchers from the University of Calgary in Canada call for a more thorough approach to exploring the impact of distracted pedestrian behaviours on crash risk.

Worldwide, around 270,000 pedestrians die every year, accounting for around a fifth of all road traffic deaths, according to the researchers.

'Pedestrian distraction' has become a recognised safety issue as more and more people use their smartphones or hand held devices while walking on the pavement and crossing roads, they said.

The researchers looked for published evidence to gauge the potential impact on road safety of hand-held or hands-free device activities.

This included talking on the phone, text messaging, browsing and listening to music.

From among 33 relevant studies, they pooled the data from 14 -- involving 872 people -- and systematically reviewed the data from another eight.

The analysis showed that listening to music wasn't associated with any heightened risk of potentially harmful pedestrian behaviours.

Talking on the phone was associated with a small increase in the time taken to start crossing the road, and slightly more missed opportunities to cross the road safely.

The researchers found that text messaging emerged as the potentially most harmful behaviour.

It was associated with significantly lower rates of looking left and right before or while crossing the road, and with moderately increased rates of collisions, and close calls with other pedestrians or vehicles, they said.

Texting also affected the time taken to cross a road, and missed opportunities to cross safely, but to a lesser extent, according to the researchers.

The review of the eight observational studies revealed that the percentage of pedestrians who were distracted ranged from 12 to 45 per cent, they said.

It also found behaviours were influenced by several factors, including gender, time of day, solo or group crossing, and walking speed.

The researchers acknowledge "a variety of study quality issues" which limit the generalisability of the findings.

"Given the ubiquity of smartphones, social media, apps, digital video and streaming music, which has infiltrated most aspects of daily life, distracted walking and street cross will be a road safety issue for the foreseeable future," the researchers noted.

"And as signage and public awareness campaigns don't seem to alter pedestrian behaviour, establishing the relationship between distracted walking behaviour and crash risk is an essential research need," they said.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.