Nanoparticles in food, vitamins unhealthy for humans
London: Billions of engineered nanoparticles in foods and pharmaceuticals, which are ingested by humans daily, could be more detrimental to health than previously thought, a new study has warned.
A research collaboration led by Michael Shuler, a professor of Chemical Engineering and chair of Biomedical Engineering at Cornell University, studied how large doses of polystyrene nanoparticles – a common, FDA-approved substance found in substances ranging from food additives to vitamins – affected how well chickens absorbed iron, an essential nutrient, into their cells.
According to the study, high-intensity, short-term exposure to the particles initially blocked iron absorption, whereas longer-term exposure caused intestinal cell structures to change, allowing for a compensating uptick in iron absorption.
The researchers tested both acute and chronic nanoparticle exposure using human gut cells in petri dishes as well as live chickens and reported matching results.
They chose chickens because these animals absorb iron into their bodies similarly to humans, and they are similarly sensitive to micronutrient deficiencies.
Shuler said the research serves to underscore how such particles, which have been widely studied and considered safe, cause barely detectable changes that could lead to, for example, over-absorption of other, harmful compounds.
Human exposure to nanoparticles is only increasing, Shuler said.
“Nanoparticles are entering our environment in many different ways,” Shuler said.
“We have some assurance that at a gross level they are not harmful, but there may be more subtle effects that we need to worry about,” Shuler added.
The study has been published in the journal Nature Nanotechnology.
More from India
More from World
More from Sports
More from Entertaiment
- Dr Subhash Chandra Show: Aspiring for more than what you have!
- Mathura SSP receives death threat letter, message for PM Modi
- Reservation issue: Police register case against Bainsla, 20 others
- Zee Media exclusive interview with Haryana CM Manohar Lal Khattar
- Zee Media exclusive chat with 'Welcome to Karachi' cast
- Watch: Fast N Facts @ 7:30pm
- Haridwar: Hotel Radisson Blu sealed for polluting Ganga
- Girl in Punjab's Pathankot quit studies for fear of eve-teasing
- Special: Furious over rising water crisis, people take to the streets
- UP Minister allegedly threatens, abuses Gonda businessman
- Manali: Heavy corruption found in environmental taxes
- Couple in Bihar asked to pay Rs 50,000 as 'tax' for inter-caste marriage
- Aapke Sitare: Astro prediction for May 24, 2015
- Watch: Fast N Facts @ 7:30pm
- One year of Modi govt: How satisfied is the common man?
- IPL 2015 Final: MI vs CSK - As it happened...
- Heatwave continues in North India; death toll in Andhra Pradesh, Telangana more than 400
- CBSE.nic.in 12th XII Results 2015: CBSE Board (cbseresults.nic.in) Class 12th XII Exam Results 2015 to be announced on May 25
- Heatwave kills 223 in AP, Telangana, Chandrababu Naidu announces compensation; Delhi records hottest day
- 'Tanu Weds Manu Returns' starts on a good note at the Box Office!
- CBSE 12th Result 2015 to be announced on Monday
- IPL 2015 final: Mumbai Indians thrash Chennai Super Kings by 41 runs to lift second title
- Death threat to PM Narendra Modi ahead of Mathura rally sends police into tizzy
- Organisation demands re-examination of AIPMT 2015
- Standoff with LG: Arvind Kejriwal calls emergency session of Delhi Assembly
- Kejriwal completes 100 days in office, AAP says centre 'shadow boxing' over row with LG
- CBSE Class 12th Board Results 2015 to be announced on Monday, May 25
- Online filing of applications for UPSC civil services exam begins
- No alliance with JD-U in Bihar: BJP
- Not just today, Muslims feeling alienated since 1947: Najma Heptulla