Showing posts with label Health. Show all posts
Showing posts with label Health. Show all posts

Sunday, May 22, 2016

Diet Soda in Pregnancy Is Linked to Overweight Babies


Drinking diet soda and other artificially sweetened beverages during pregnancy is associated with having overweight 1-year-olds, according to a new report.
Canadian researchers studied 3,033 mothers who delivered healthy singletons between 2009 and 2012 and had completed diet questionnaires during their pregnancies. They then examined the babies when they were a year old. Almost 30 percent of the women drank artificially sweetened beverages during pregnancy.
After controlling for maternal body mass index, age, breastfeeding duration, maternal smoking, maternal diabetes, timing of the introduction of solid foods and other factors, they found that compared with women who drank no diet beverages, those who drank, on average, one can of diet soda a day doubled the risk of having an overweight 1-year-old.
The study, in JAMA Pediatrics, found no association with infant birth weight, suggesting that the effect is on postnatal, not fetal, growth. The mother’s consumption of sugar-sweetened drinks was not associated with increased risk for overweight babies.
“This is an association, and not a causal link,” said the lead author, Meghan B. Azad, an assistant professor at the University of Manitoba. “But it certainly raises the question of whether artificial sweeteners are harmless. It’s not time to ban them or tell everyone not to consume them, but there’s no great benefit to consuming these drinks, so there’s no harm in avoiding them.”

How Much Is Too Much Marijuana to Drive? Lawmakers Wonder



It’s relatively easy to determine when someone is too drunk to drive. If a driver’s blood-alcohol level is 0.08 percent or higher, that person is considered legally impaired. But a study says that measuring the effects of marijuana on drivers is far trickier, and that blood tests are an unreliable indication of impairment by cannabis.
As more states consider legalizing the substance, that presents a challenge to legislators seeking to create laws on driving while impaired by marijuana.
The study, commissioned by the AAA Foundation for Traffic Safety, found that laws in six states that legally assess impairment by measuring how much THC (the active ingredient in marijuana) is in a person’s blood are not supported by science.
“There is no concentration of the drug that allows us to reliably predict that someone is impaired behind the wheel in the way that we can with alcohol,” said Jake Nelson, AAA’s director of traffic safety advocacy and research.
Lawmakers in those states looked to policies on drunken driving for cues on how to legislate against driving while high. But the body absorbs alcohol and cannabis in different ways, the study said. While drunkenness directly correlates to alcohol in the bloodstream, cannabis impairment takes place only when THC makes its way into the fatty tissue of the brain.
Regular marijuana users, including those who take the drug medicinally, often show no signs of impairment after using, according to Jolene Forman, a staff lawyer for the Drug Policy Alliance, a drug-reform advocacy group. She also said that marijuana can stay in the blood for hours, days and even weeks after its effects wear off.
As a result, the presence of THC in blood is not a useful indicator of whether the drug is impairing that person’s ability to drive. Furthermore, the study said, “The practical reality of identifying evaluating, arresting and sampling suspected impaired drivers means that the THC concentration measured in the blood specimen reflects neither the concentration in the subject’s blood at the time of arrest, nor the concentration of active drug in the brain.”
In Montana, Washington, Pennsylvania, Ohio and Nevada, drivers are presumed guilty if they have a certain amount of THC in their blood. Colorado also uses a threshold to assess impairment, though it allows suspects to provide evidence at trial that they were not impaired.
The AAA study recommended that laws relying on thresholds be tossed out and that other factors be used. Mr. Nelson said that, ideally, those would include the failure of a standard field sobriety test and the results of a drug assessment conducted by a trained specialist. That assessment would include a blood test to confirm whether cannabis (or any other drug) was present in the bloodstream.
But Ms. Forman said that using blood tests to establish impairment, even on a partial basis as Mr. Nelson suggested, could result in arbitrary punishments.
“It would be equivalent to a test that shows that you had a glass of wine three nights prior,” she said. “It tells you nothing about whether the driver is safe now. If we have better tests in the future, then by all means we should use them, but right now those tests are not helpful.”
She said that two groups would be especially vulnerable to such tests: patients using medical marijuana to treat illnesses, who would have high levels of THC in their blood regardless of their sobriety; and blacks and Latinos, who commit traffic violations at similar rates to whites but are more likely to be cited for them, data show.
Sam Kamin, a professor of marijuana law and policy at the University of Denver, also objected to the blood tests’ inclusion. He said that though it was meaningful to confirm that someone suspected of driving while high had THC in his or her blood, a jury might weigh that information too heavily in deciding whether that person was impaired.
“I think that the amount of THC in the bloodstream is a relevant factor; I just worry that it’s misleading,” he said.
Over a dozen states are considering legalizing marijuana in some form in 2016, but it is not clear how they would institute laws to prevent people from driving while high.
California’s Adult Use of Marijuana Act, which proposes to legalize recreational marijuana, includes a provision for $15 million to be given to the California Highway Patrol over five years to “develop protocols and best practices for determining when a person is driving while impaired, including from marijuana use.”
A similar act proposed in Massachusetts, where recreational marijuana is decriminalized but not legal, does not specify how impairment would be assessed.
The AAA study echoes the recommendations of many experts who call for the improvement of technology to evaluate drivers’ saliva for cannabis use.
Sean O’Connor, the faculty director of the Cannabis Law and Policy Project at the University of Washington, said that there was promising research into detecting cannabis through saliva and other techniques, but that it was being stymied by the drug’s legal classification as a Schedule 1 substance.
“We are hamstrung by the fact that you can’t do legitimate scientific research unless you have a Schedule 1 license,” he said.
His argument underlines the difficulty for states trying to write coherent policy when the drug is still illegal under federal law. Douglas Berman, a law professor at Ohio State University who edits a blog on marijuana law, policy and reform, said that even our knowledge about the way people drive when high is confounded by the reality that marijuana was illegal when some of that data was collected.
“People had an extra reason to be cautious drivers when they were aware that they smelled like marijuana,” he said. “Now that it’s legal in some jurisdictions, absolutely that may affect not just the willingness of people to get behind the wheel after they’ve smoked, but also how much they’ll worry about getting pulled over.”

Is Your Food ‘Natural’? F.D.A. to Weigh In

By ANAHAD O'CONNOR  MAY 17, 2016 5:31 AM 



Can you define the word “natural”?
The Food and Drug Administration is certainly trying. Since 2014, the agency has asked the public to weigh in on how the term should be defined and used on food labels — or whether it is even appropriate for the F.D.A. to regulate the use of the word at all. By the time the agency closed its public commenting period on May 10,about 7,600 comments had poured in from consumers, companies, food experts and health and legal authorities.
A spokeswoman for the F.D.A. said that the agency is now reviewing all of those comments. While the process could take months, experts say there is a great sense of urgency. Americans spend more than $40 billion a year on cereals, breads, yogurts, beverages, and other foods identified as “all natural.” Surveys show that consumers seek out the “all natural” label because they believe — wrongly — that it means the food was produced without genetically modified organisms, hormones, pesticides and artificial ingredients.
In fact, more than a hundred class action lawsuits have accused companies of misleading consumers by slapping the words “all natural” on products that contain synthetic, artificial and genetically engineered ingredients. A number of federal judges have urged the F.D.A. to weigh in, saying that they cannot rule on whether companies improperly used the term on their products until the F.D.A. defines what it actually means.
But can it?
Until now, the F.D.A. has “respectfully declined” judges’ requests. It has mostly referred the public to an informal advisory it published more than two decades ago, which stated that natural means that “nothing artificial or synthetic,” such as color additives, has been added to a food that would not normally be expected to contain it.
But that advisory is not legally enforceable, nor was it intended to address processing methods such as pasteurization and irradiation or, for that matter, genetic engineering.
The issue of whether genetically modified foods can be labeled natural has been raised in more than 50 legal cases, including a lawsuit against the makers of Mission tortilla chips. According to the suit, Mission’s tortilla chips were labeled “all natural” despite being made from genetically modified corn, which the suit called misleading.
Among those who have called on the F.D.A. to take a stronger stance on the meaning of the word is Eric T. Schneiderman, the New York State attorney general, who wrote a letter this month urging the agency to adopt a definition that excludes synthetic and artificial ingredients, as well as genetically modified organisms, or G.M.O.s.
Mr. Schneiderman asked the agency to restrict the definition to minimally processed foods like ground nuts and washed salads, or foods that were prepared using traditional techniques like roasting, drying, smoking and fermenting.
Forbidding genetically modified foods to be called natural would be similar to the standards for organic labeling, which are tightly regulated by the United States Department of Agriculture and which exclude G.M.O. foods from carrying the organic certification.
Under Mr. Schneiderman’s definition, “natural” would essentially mean not made by humans, and subjected to little or no processing.
But other experts say it’s not so simple. For decades, countless varieties of crops that ultimately became supermarket staples were created through breeding practices that involved subjecting the crops to radiation to attain favorable genetic mutations — including the ruby red grapefruit, said Michael Jacobson of the Center for Science in the Public Interest, a consumer advocacy group in Washington.
“I think if you ask the average person they would say that ruby red grapefruits are natural,” Dr. Jacobson said. “But ruby red grapefruits were derived decades ago from seeds that had been treated with irradiation. Some people would say that’s human intervention and so it’s not natural. There are plenty of reasons why the natural issue has gotten so messy and why the F.D.A. has run the other way from it.”
To avoid those issues, some argue that the definition should refer only to the post-harvesting period, so that foods that are plucked from the ground or produced by farms and brought to market as is are considered natural, while those that are subjected to extensive processing are not.
All would agree, for example, that an organic peach at a farmer’s market is natural. But what about a peach that is sliced, dried and preserved with citric acid, an organic compound that can be isolated from lemons or made in a factory? What if the peach is sliced and preserved with sugar, and then sold in a can? And what if that sugar is high-fructose corn syrup, or cane sugar from G.M.O. crops?
“Everyone is always going to have their own conception of what is natural,” said Marsha Cohen, a law professor and expert on food law at the University of California, Hastings College of the Law. “The most logical position is to say this word is never going to be meaningful enough to not be misleading to people.”
With so many nuances and thorny questions to address, the F.D.A. could choose to ban the use of the word natural from labels entirely. Food labels have become so crowded with information — nutrition facts, organic certifications, claims about hormones, gluten, whole grains and G.M.O.s — that for many people it is difficult to figure out what to focus on, said Margot Pollans, an expert on food law at the Elisabeth Haub School of Law at Pace University.
After a while, all the label claims can start to seem like white noise. But while “all natural” seems to confuse consumers even further, the F.D.A. is unlikely to forbid its use altogether.
“The problem that the F.D.A. would then encounter is the First Amendment – free speech,” said Ms. Cohen of U.C. Hastings. “The F.D.A. would have a very long road ahead of it to just ban the word completely.”
In the end, that may not be necessary. The fear of litigation has already caused food industry giants like PepsiCo, Frito-Lay, Campbell Soup and others to abandon their use of the word on products, said Jason J. Czarnezki, the executive director of environmental law programs at Pace University. Across the food industry, the number of products claiming to be “natural” fell to roughly 22 percent in 2013 from about 30 percent in 2010.
“I think companies are moving away from words that in some ways might be considered consumer fraud,” Mr. Czarnezki said.
The F.D.A. should nonetheless issue a strict definition of “natural,” he said — one that not only excludes artificial, synthetic and genetically engineered ingredients but that also restricts foods that have a large carbon footprint. Mr. Czarnezki said it is up to the agency to help consumers make sense of all the confusion.
“Even the most educated consumer can’t know what the word means,” he said.