Using magnets to help prevent heart attacks

June 7, 2011

If a person's blood becomes too thick it can damage blood vessels and increase the risk of heart attacks. But a Temple University physicist has discovered that he can thin the human blood by subjecting it to a magnetic field.

Rongjia Tao, professor and chair of physics at Temple University, has pioneered the use of electric or magnetic fields to decrease the viscosity of oil in engines and pipelines. Now, he is using the same magnetic fields to thin human blood in the .

Because contain iron, Tao has been able to reduce a person's blood viscosity by 20-30 percent by subjecting it to a magnetic field of 1.3 Telsa (about the same as an MRI) for about one minute.

Tao and his collaborator tested numerous in a Temple lab and found that the magnetic field polarizes the red blood cells causing them to link together in short chains, streamlining the movement of the blood. Because these chains are larger than the single blood cells, they flow down the center, reducing the friction against the walls of the . The combined effects reduce the viscosity of the blood, helping it to flow more freely.

When the magnetic field was taken away, the blood's original viscosity state slowly returned, but over a period of several hours.

"By selecting a suitable and pulse duration, we will be able to control the size of the aggregated red-cell chains, hence to control the blood's viscosity," said Tao. "This method of magneto-rheology provides an effective way to control the blood viscosity within a selected range."

Currently, the only method for thinning blood is through drugs such as aspirin; however, these drugs often produce unwanted side effects. Tao said that the method is not only safer, it is repeatable. The magnetic fields may be reapplied and the viscosity reduced again. He also added that the viscosity reduction does not affect the red blood cells' normal function.

Tao said that further studies are needed and that he hopes to ultimately develop this technology into an acceptable therapy to prevent heart disease.

Tao and his former graduate student, Ke "Colin" Huang, now a medical physics resident in the Department of Radiation Oncology at the University of Michigan, are publishing their findings in the journal, Physical Review E.

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not rated yet Jun 07, 2011
MRI at $5,000 USD per treatment?
3.5 / 5 (2) Jun 07, 2011
No it's not an MRI, and no, MRI treatments don't cost $5,000.
5 / 5 (3) Jun 07, 2011
Wow, so that means that the people at the mall selling magnet bracelets were right after all!
not rated yet Jun 08, 2011
MRI at $5,000 USD per treatment?

No it's not an MRI, and no, MRI treatments don't cost $5,000.

not rated yet Jun 08, 2011
this is a great idea, i wonder if long-term chain-unchain-chain has any effects on the blood cells themselves? might also create EM induction effects elsewhere in the body (big, moving iron chains as opposed to free-flowing iron 'pieces' might induce unintended effects...?)
not rated yet Jun 08, 2011
I also wonder of if there could be unintended effects when blood cells flow in a chain rather than individually.

For example, in the smallest capillaries these chains might be more likely to tangle and clot...
Also, wouldn't it be harder for chains of blood cells to perform their crucial functions of discharging nutrients and collecting wastes?
not rated yet Jun 08, 2011
Wow, so that means that the people at the mall selling magnet bracelets were right after all!

LOL - well I certainly wouldn't want to carry home a magnetic bracelet capable of producing a 1.3 Telsa field - even if I could pick it up, which I very much doubt! ;-)
not rated yet Jun 09, 2011
1.3 Tesla field is common for most of neodymium magnets

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