Food and supplement manufacturers are pushing the line that high-fiber foods are good for your health, but they aren’t.
High-fibre foods are not just better for your bones, but also for your brain and your blood sugar, according to a new report from the American Heart Association.
“There’s no evidence that high fiber foods actually cause obesity,” said Michael Nussbaum, an assistant professor at the Mayo Clinic.
“And the evidence is not great that the fiber itself causes any of these health problems.”
But if you eat high-fat, high-sugar foods, you might get some benefits from the high fiber.
A new study out of the University of Alabama at Birmingham, for instance, found that a high-protein diet, which is high in high-quality protein, had fewer risks of type 2 diabetes and obesity than a standard diet.
But if we just keep eating the same high-carb, high to low-fat diet for years, we might be doing harm, according the study’s lead author, Dr. Peter Katz, director of the UA Center for Clinical and Translational Sciences.
“I think what we’re saying is that we’re making a big mistake with our low-carb diet,” he said.
“We’re doing the same thing as people who have high blood pressure, or we’re doing a lot of high-calorie, high fat diets.
And we’re not really doing our best to reduce our risk.”
Katz, a researcher at the UA, is not alone in arguing that our current diet is a problem.
There are several other studies that support the idea that eating a high level of dietary fiber can reduce your risk of cardiovascular disease and some other diseases.
But these studies are all based on animal models.
“We’re really just doing this as a hypothesis, and there’s no solid evidence to back up it,” Katz said.
He and his team looked at a number of studies that were done in humans, and compared the diets of people with and without high fiber intake.
For instance, the study found that people with higher fiber intake had significantly lower levels of LDL, or “bad” cholesterol, and higher levels of HDL, or good cholesterol.
“The effect was similar for men and women, but not for men with high-GI or high-carbs diets,” Katz explained.
The study did not compare high- and low-fIB diet groups.
The results were surprising, Katz said, because the results were actually more consistent in people with the same type of blood pressure and heart disease.
He said the results also looked at the impact of high fiber consumption on blood pressure over time, and found no significant change in blood pressure for people who ate more than the recommended amount of fiber per day.
Katz said the data shows that high fibre intake doesn’t cause a dramatic reduction in blood cholesterol, but does decrease the risk of heart disease and other diseases, such as diabetes.
However, Katz told Fox News that the data doesn’t tell us how much fiber is good for us.
“In this study, we did not look at how much of the fiber was fiber, but rather, how much was protein,” he explained.
“I think the data is not clear enough to say that it’s beneficial.
It’s really up to individual people to decide if they want to have that much fiber in their diet.”
Some of the research shows that fiber can help reduce your cholesterol, which might help you lower your risk for developing high blood sugar.
But that’s not the whole story, Katz added.
“There’s some evidence that low-density lipoprotein (LDL) is a more dangerous cholesterol marker than high-density cholesterol, so a low-DLC [low-density-lipoprotein] may be a better marker of your risk.”
The study also found that eating more fiber may help lower your triglycerides, which are the fatty substances that can form in your blood vessels.
“If you’re in the high-glycemic-index category, eating more than 100 grams of fiber a day could reduce your triglyceride by 1 percent,” Katz told FOX News.
But, that may be just a small number of grams, he said, adding that the overall amount of food in your diet has a big effect on your blood cholesterol.
“If you eat 100 grams a day of high glycemic- index carbohydrates, it’s going to raise your triglycerid by about 1 percent, whereas if you have a 100-gram portion of low glycemic index carbohydrates or a 50-gram portions of fruit and vegetables, you’ll lower your LDL by about 2 percent,” he added.
Katz said that high in-vitro testing for cholesterol is not a good thing for people, as it can cause unnecessary heart damage and potentially lead to anemia.
“People are taking high doses of anti-inflammatory drugs that can lead to increased inflammation,” he noted.