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Magnetic Therapy Research: Effects on Growth


Teratological studies of prenatal exposure of mice to a 20 kHz sawtooth magnetic field.

Kim SH, Song JE, Kim SR, Oh H, Gimm YM, Yoo DS, Pack JK, Lee YS.

College of Veterinary Medicine, Chonnam National University, Kwangju, South Korea.

In order to evaluate the importance of gestational age in possible effects due to exposure to a 20 kHz sawtooth magnetic field, pregnant ICR mice at gestational 2.5-15.5 days post-coitus, which is the most sensitive stage for the induction of major congenital malformations, were exposed in a carrousel irradiator. The mice were exposed to a 20 kHz intermediate frequency (IF) sawtooth magnetic field had a 6.5 microT peak intensity for 8 h/day. The animals were sacrificed on the 18th day of gestation; and the fetuses were examined for mortality, growth retardation, changes in head size, and other morphological abnormalities. From the above conditions, it is concluded that the exposure to a 20 kHz sawtooth magnetic field with 6.5 microT peak intensity does not inflict any adverse effect on fetuses of pregnant mice. Copyright 2004 Wiley-Liss, Inc.

Bioelectromagnetics. 2004 Feb;25(2):114-7.

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Apparent biological effect of strong magnetic field on mosquito egg hatching.

Pan H, Liu X.

Department of Chemistry, University of Tennessee, Knoxville, Tennessee.

Apparent biological effects of strong magnetic fields were observed in the hatching behavior of fresh mosquito eggs in the center of 9.4 and 14.1 T magnets. In the first experiment performed at 20 +/- 1 degrees C, the hatching was delayed 32 h by a 9.4 T magnetic field and 71 h by a 14.1 T magnetic field. In the second experiment performed at 22 +/- 1 degrees C, the hatching was delayed 14 h by a 9.4 T magnetic field and 27 h by a 14.1 T magnetic field. In the magnetic field range of this study, the hatching delay increases nonlinearly with the intensity of the magnetic field. The experimental results also suggest that the biological effects of magnetic fields could be reversible or partially reversible to some extent. Bioelectromagnetics 25:84-91, 2004. Copyright 2004 Wiley-Liss, Inc.

Bioelectromagnetics. 2004 Feb; 25(2): 84-91.

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Induction of primary root curvature in radish seedlings in a static magnetic field.

Yano A, Hidaka E, Fujiwara K, Iimoto M.

Graduate School of Science and Technology, Chiba University, Matsudo, Chiba, Japan.

Primary roots of radish (Raphanus sativus L.) seedlings were exposed to an inhomogeneous static magnetic field generated by a permanent magnet, during continuous rotation on a 0.06 rpm clinostat, thereby reducing the unilateral influence of gravity. The roots responded tropically to the static magnetic field with the tropism appearing to be negative. These roots responded significantly (P < 0.05) to the south pole of the magnet. The significant tropic response was found for a magnetic flux density of 13-68 mT, for a field gradient of 1.8-14.7 T/m, and for the product of magnetic field and field gradient of 0.023-1.0 T(2)/m. A small, but significant, response of the roots to the north pole has also been found. Copyright 2001 Wiley-Liss, Inc.

Bioelectromagnetics. 2001 Apr;22(3):194-9.

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Use of biomagnetic therapy to encourage growth in preterm neonates.

Diane K. Cody, RNC is NICU Staff Nurse, Baystate Medical Center, Springfield WA

James D. Moran, LAc, DA, CAAP CAS is a Certified Acupuncture Physician, Certified Addictions Specialist, and Member of Pain Program

Baystate Medical Center, Springfield, MA, USA.

Baby Alex was born on May 30, 1998 at 26 weeks gestation at Baystate Medical Center Children's Hospital in Springfield, MA. During his first day of life, he required very little respiratory to support. He was weaned briefly to a cannula on the second day of his life. His reintubation chest x-ray showed widespread pulmonary interstitial emphysema. He went on to develop severe broncopulmonary dyspasia (BPD) and required tremendous ventilatory support for the rest of his life. Alex received standard medical care for his BUD. At the request of his family, static biomagnetic therapy was instituted beginning on day 72 of life.

An Ancient Cure:

Stationary magnets have been used for centuries by cultures throughout the world. However, it has only been until recently that serious scientific investigation has demonstrated a capability for magnets to diminish pain, speed healing of soft tissue and bone, reduce anxiety and depression, reduce fibromyalgia and arthritic pain, and promote general weilness.1 Some of the known mechanisms for these responses include the "Hall effect," "increased blood flow, and stimulation of autonomic function, ATP, beta endorphins, melatonin, and osteoblast function.2

The role of static biomagnetic fields in enhancing melatonin release by stimulating the pineal gland, retina, and intestinal tract can have many positive biological effects. Chief among these is the stimulation of human growth hormone.3

Alex's Magnetic Therapy:

The basic setup of Alex's magnets was fairly simple. Alex slept on a 14 inch by 24-inch pad that had 40 flat rectangular magnets inside. Each magnet had a rating of 3950 gauss. All of the magnets had the North Pole facing the baby and the South Pole facing the bed. There was a large 4 inch by 6 inch magnet which was half and inch wide situated perpendicular to the bed and positioned at the top of the magnetic pad. This magnet was also 3950 gauss and the North Pole faced Alex. The top of Alex's head was about 3 inches away from this larger magnet.

The specific benefits Alex received from magnetic therapy are difficult to separate from the benefits of his medical care. His primary caregivers did observe two main differences between Alex and other BPD patients: relaxed muscle tone and enhanced growth.

Before magnetic therapy, Alex's shoulder and neck muscles were extremely tight and sensitive to an" touch or manipulation. Subjectively, many nurses and Alex's family saw reduced muscle tension after therapy began. Alex did not have the pronounced neck and back arching p05ture that many BPD infants exhibit. Since Baystate's NICU does not have any type of objective standard for documenting muscle tension, this observation is difficult to quantify

Alex did grow very well during his magnetic therapy. The slope of his growth curve increased after his magnetic therapy began. Compared to three previous patients on the unit with fatal BPD, Alex was the only one who was on a growth course, which if projected, would intersect with the normal growth curve. The others were on curves parallel to and below the norm. BPD infants have reduced rates of growth and may not catch up with their peers until ages 3 to 10.

The magnetic effect regarding human growth hormone stimulation may in part account for Alex's increased growth rate.


Despite extraordinary growth, Alex died of unknown causes at 125 days on October 2, 1998. There was no sign of cor pulmonale on his last cardiac echocardiogram 2 weeks prior to his death. His short life made an enormous ripple in our NICU regarding magnets and their effects on living organisms.

It is difficult if not impossible to tease out one facet of treatment and conclude a causal relationship. Further research in biomagnetic therapy with preterm neonates may support the effects seen in Alex 5 case, especially in the BPD population where growth can have a strong impact on survival.

Neonatal Netw. 1999 Sep;18(6):63-4.

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