Professor Declan Naughton and Doctor Andrea Petróczi from Kingston University, South West London, carried out the study, using a formula developed by the United States’ Environmental Protection Agency for the estimation of potential health risks associated with long-term exposure to environmental pollutants.
This Target Hazard Quotient (THQ) gives an indication of risk based on published upper safe limits for various chemicals. A THQ below 1.0 is considered to be non-hazardous. According to Professor Naughton, “The THQ is a risk assessment designed to avoid underestimation. It therefore incorporates several assumptions, such as maximum absorption of ingested metal ions and lifetime exposures. In contrast, bolus dosing (e.g. binge drinking) and cross effects with other potential toxins (e.g. alcohol) are not accounted for, nor are the effects on the elderly, the young or those with a clinical condition”.
The authors found that THQ values for most wines were well above the value of 1.0 and thus are of concern. Typical potential maximum THQ values ranged from 50 to 200, with Hungarian and Slovakian wines reaching 300. THQ values for both red and white wines studied were high, having values ranging from 30 to 80 based on a 250mL glass per day. Naughton said, “These values are concerning, in that they are mainly above the THQ value of 1.0. Excess intake of metal ions is credited with pathological events such as Parkinson’s disease. In addition to neurological problems, these ions are also believed to enhance oxidative damage, a key component of chronic inflammatory disease which is a suggested initiator of cancer”.
These results also question a popular belief about the health-giving properties of red wine: that drinking red wine daily to protect from heart attacks is often related to levels of ‘anti-oxidants’. However the finding of hazardous and pro-oxidant metal ions creates a major question mark over these supposed protective benefits. The authors recommend that, “Levels of metal ions should appear on wine labels, along with the introduction of further steps to remove key hazardous metal ions during wine production”.
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A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
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A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
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Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
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23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy