A preliminary 16-person study suggests that eating pistachios may help alter levels of potentially beneficial bacteria in the gut, a finding that holds promise for supporting digestive health(1). The research, presented as an abstract this week at the Experimental Biology conference, is the first study of pistachios and almonds and their modulating role on the gut microbiota composition.
"Gut microbiota, or the microbial environment in the gastrointestinal tract, provides important functions to the human host," said Volker Mai, PhD, lead study author and assistant professor at the University of Florida's Institute of Food and Agricultural Sciences. "Modifying microbiota towards a 'beneficial' composition is a promising approach for supporting intestinal health, with potential effects on overall health, and it appears that pistachios may play a role in this modification."Pistachios Deliver Essential Compounds to the Gut
To examine this relationship between prebiotics found in pistachios and the gut, researchers conducted a feeding study at the Beltsville Human Nutrition Research Center in Maryland. Sixteen healthy individuals were randomly assigned to eat an American-style, pre-planned diet that included either 0 ounces, 1.5 ounces or 3 ounces of pistachios or almonds per day. Each participant's diet was calorie-controlled to ensure they neither gained nor lost weight during the intervention. Multiple stool samples were collected throughout the study and analyzed for bacterial community composition. The researchers also quantified the amounts of Lactic Acid Bacteria and Bifidobacteria in the stool, two groups of live microorganisms that reside in the digestive tract and help break down food substances.
After controlling for age, dietary factors and other relevant variables, the researchers observed that after 19 days, people who ate up to 3 ounces of pistachios (about 147 nuts or 2 servings) per day had increased changes in levels of various gut bacteria. According to the abstract, people who ate pistachios showed an increase in potentially beneficial butyrate-producing bacteria. Butyrate has been shown to be a preferred energy source for colonic epithelial cells and is thought to play an important role in maintaining colonic health in humans(2). The difference in gut microbes was stronger in people who ate pistachios rather than almonds. The researchers used "modern high throughput sequencing" to quantify specific gut bacterial DNA signatures before and after nut consumption. According to the researchers, this is the first study using this method to observe that pistachios and almonds may have the ability to help change the amounts of bacteria thriving in the gut.
"Fibers and incompletely digested foods, including nuts, that reach the proximal colon provide compounds required for maintaining a diverse microbiota," said Mai. "While still in the early stages of research, this study is a promising sign that increasing consumption of nuts, specifically pistachios, provides a novel means to modify the number of the gut's 'healthy' microbiota, with potential health benefits."
The research was funded by the Paramount Farms International and the Almond Board of California.In-Shell Pistachios Offer a Package of Nutrients
(1)Ukhanova M, Fredborg M, Daniels S, Netter F, Novotny JA, Gebauer SK, Xiaoyu W, Baer D, Mai V. Human gut microbiota changes after consumption of almonds or pistachios. Presented at 2012 Experimental Biology meeting in San Diego, CA on 4/23/2012.
(2)Appl Environ Microbiol. 2000 Apr;66(4):1654-61.About PistachioHealth.com
Inselspital: Fewer CT scans needed after cerebral bleeding
20.03.2019 | Universitätsspital Bern
Building blocks for new medications: the University of Graz is seeking a technology partner
19.03.2019 | Karl-Franzens-Universität Graz
DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
The nonlinear process of high-order harmonic generation (HHG) in gases is one of the cornerstones of attosecond science (an attosecond is a billionth of a...
Nano- and microtechnology are promising candidates not only for medical applications such as drug delivery but also for the creation of little robots or flexible integrated sensors. Scientists from the Max Planck Institute for Polymer Research (MPI-P) have created magnetic microparticles, with a newly developed method, that could pave the way for building micro-motors or guiding drugs in the human body to a target, like a tumor. The preparation of such structures as well as their remote-control can be regulated using magnetic fields and therefore can find application in an array of domains.
The magnetic properties of a material control how this material responds to the presence of a magnetic field. Iron oxide is the main component of rust but also...
Due to the special arrangement of its molecules, a new coating made of corn starch is able to repair small scratches by itself through heat: The cross-linking via ring-shaped molecules makes the material mobile, so that it compensates for the scratches and these disappear again.
Superficial micro-scratches on the car body or on other high-gloss surfaces are harmless, but annoying. Especially in the luxury segment such surfaces are...
The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
11.03.2019 | Event News
01.03.2019 | Event News
28.02.2019 | Event News
22.03.2019 | Life Sciences
22.03.2019 | Life Sciences
22.03.2019 | Information Technology