Navigation Links
Fading ability to taste iron raises health concerns for people over age 50
Date:8/10/2011

People lose the ability to detect the taste of iron in drinking water with advancing age, raising concern that older people may be at risk for an unhealthy over-exposure to iron, Virginia Tech engineers are reporting in results they term "unique." The study appears in the American Chemical Society's journal Environmental Science & Technology on Aug. 10.

Andrea Dietrich, professor of civil and environmental engineering at Virginia Tech, and her colleagues, Susan Mirlohi, of Christiansburg, Va., a Ph.D. student in environmental engineering, and Susan Duncan, professor of food science and technology, point out that the perception of a metallic flavor in water can help people limit exposure to metals such as iron, which occurs naturally in water or from corrosion of iron water-supply pipes. People need less iron after age 50.

"Metallic flavor, caused by the dissolved iron and copper commonly found in groundwater or which may be introduced to tap water by the nation's corroding infrastructure, has been an issue for drinking water consumers and utilities," Dietrich said.

More than two million miles of the nation's infrastructure of water and wastewater pipes is nearing the end of its useful life, but the mostly underground facilities often do not attract much attention because of this "invisibility," said Sunil Sinha, Virginia Tech associate professor of civil and environmental engineering and a colleague of Dietrich's. Sinha is directing two new research projects to develop a National Pipeline Infrastructure Database.

Studies also suggest that older people who consume too much iron - especially in dietary supplements and iron-rich foods - may be at increased risk for Alzheimer's disease and other age-related conditions. Scientists long have known that taste perception fades with age. Dietrich's group set out to fill in gaps in knowledge about how aging affects perception of a metallic flavor in water.

Their results with 69 volunteers, aged 19 to 84 years, identified a distinctive age-related decline in their ability to taste iron. People over age 50 tended to miss the metallic taste of iron in water, even at levels above the thresholds set by the U. S. Environmental Protection Agency and the World Health Association.

"Our findings are . . . unique in that drinking water is the source of the environmental sensory contaminant and evidence is provided for wide variation in the human population," the report states. "Whereas our research focused on iron, there are implications for other metals of health concern, most notably copper from copper pipes as our previous research has demonstrated that copper is less flavorful than iron and it is known that copper is also more toxic than iron."


'/>"/>

Contact: Lynn Nystrom
tansy@vt.edu
540-231-4371
Virginia Tech
Source:Eurekalert

Related biology news :

1. Some short-term memories die suddenly, no fading
2. Feeding hormone ghrelin modulates ability of rewarding food to evoke dopamine release
3. Mutant flies shed light on inherited intellectual disability
4. Psychologists find link between ovulation and womens ability to identify heterosexual men
5. Renaissance of 200-year old technology could ease 21st century sustainability challenges
6. New biofuel sustainability assessment tool and GHG calculator released
7. New parallelization technique boosts our ability to model biological systems
8. Inability to cry in patients with Sjogrens syndrome affect emotional and mental well-being
9. Scientist recognized for contributions to the sustainability of the Adirondacks
10. Gene therapy success depends on ability to advance viral delivery vectors to commercialization
11. NTU receives $250,000 gift to promote groundbreaking research in sustainability
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
(Date:4/15/2016)... 2016  A new partnership announced today will ... decisions in a fraction of the time it ... high-value life insurance policies to consumers without requiring ... Force Diagnostics, rapid testing (A1C, Cotinine and HIV) ... pressure, weight, pulse, BMI, and activity data) available ...
(Date:4/14/2016)... AVIV, Israel , April 14, 2016 ... Behavioral Authentication and Malware Detection, today announced the appointment ... already assumed the new role. Goldwerger,s leadership ... BioCatch, on the heels of the deployment of its ... addition, BioCatch,s behavioral biometric technology, which discerns unique cognitive ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Prostate Cancer Foundation (PCF) is pleased to announce 24 new Young Investigator ... Members of the Class of 2016 were selected from a pool of 128 ... About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the ... the Supplyframe Design Lab . Located in Pasadena, Calif., the Design Lab’s ... how hardware projects are designed, built and brought to market. , The Design ...
(Date:6/23/2016)... LOUISVILLE, Ky. , June 23, 2016 /PRNewswire/ ... from two Phase 1 clinical trials of its ... double-blind, placebo-controlled, single and multiple ascending dose studies ... and pharmacodynamics (PD) of subcutaneous injection in healthy ... APL-2 subcutaneously (SC) either as a single dose ...
(Date:6/23/2016)... On Wednesday, June 22, 2016, the NASDAQ Composite ... Jones Industrial Average edged 0.27% lower to finish at 17,780.83; ... has initiated coverage on the following equities: Infinity Pharmaceuticals Inc. ... NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ARLZ ), ... more about these stocks by accessing their free trade alerts ...
Breaking Biology Technology: