Dr. Russell Blaylock, author of The Blaylock Wellness Report newsletter, is a nationally recognized board-certified neurosurgeon, health practitioner, author, and lecturer. He attended the Louisiana State University School of Medicine and completed his internship and neurological residency at the Medical University of South Carolina. For 26 years, practiced neurosurgery in addition to having a nutritional practice. He recently retired from his neurosurgical duties to devote his full attention to nutritional research. Dr. Blaylock has authored four books, Excitotoxins: The Taste That Kills, Health and Nutrition Secrets That Can Save Your Life, Natural Strategies for Cancer Patients, and his most recent work, Cellular and Molecular Biology of Autism Spectrum Disorders. Find out what others are saying about Dr. Blaylock by clicking here.
Tags: Soy A Source of Aggression

Soy: A Source of Aggression

By Thursday, 20 January 2011 09:04 AM Current | Bio | Archive

One of the nation’s most powerful industries, in terms of political and lobbying influence, is the soy industry.

Soybeans are grown in unbelievable quantities all over the world. And based on early reports of the potential for one of soy’s chemical components, genistein, to inhibit cancer growth (especially breast cancer), the number of soy products has exploded. Women, especially, are consuming:

• Soy-based milk
• Soy foods
• Soy-based snacks

In fact, soy has become something of an American obsession.

But here is some important research the mainstream media will never report. In a 2004 study, researchers used Syrian hamsters to determine the effect of a soy-based diet on aggressiveness. They found that the animals fed the soy-based diet became more aggressive and had higher testosterone levels compared to animals fed a soy-free diet.

Another study found that rats fed a soy-based diet were less sociable than rats on soy-free diets. Researchers also found that the soy-fed rats tolerated stress less well, and were more anxious than their soy-free counterparts. The soy-fed rats also produced significantly more cortisol with stress; excess cortisol damages the hippocampus — the part of the brain concerned with memory, learning, and behavior.

In 2004, Neal Simon, a professor of behavioral neuroscience, and his co-workers tested a long-term, soy-based diet (including high- and medium-dose soy protein isolates) against a soy-free diet in monkeys. After 15 months on the respective diets, the soy-fed monkeys were significantly more aggressive and tended to be antisocial. There was no increase in testosterone levels.

What about soy’s cancer-inhibiting properties? More recent reports have shown that genistein, the so-called anti-cancer compound found in soy foods, causes fragmentation of DNA in rats eating both low- and high-dose soy diets. Fragmented DNA can lead to cancer and worsening of neurodegenerative brain diseases such as Alzheimer’s. Find more details on how you can keep your brain from the ravages of dementia by reading my report Save Your Brain.

Unfortunately, no studies have been done to specifically address soy’s effects on depression and suicide risk. But there are several studies that implicate soy in these disorders. For example, rats that were fed a soy-based diet (in doses less than what humans consume) showed significant reductions of the brain growth factor BDNF (brain-derived neurotrophic factor) within the hippocampus and the cerebral cortex. Low BDNF was also found in people with suicide and major depression.

Considered together, these studies should generate major concern over consuming soy products — especially soy milk, as toxic compounds in liquid forms are more rapidly absorbed. Even the American Academy of Pediatrics expressed concern about the high levels of toxic manganese in soy baby formula. (Manganese, like aluminum, activates brain inflammation and can cause severe brain damage.) For information on food additives and the damage they can cause to your body, read my newsletter Food Additives: What You Eat Can Kill You.

But because of the powerful political interests involved with the soy industry, adult consumption of soy products continues unabated, and mostly unexamined.

For more of Dr. Blaylock’s weekly tips, go here to view the archive.

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One of the nation s most powerful industries, in terms of political and lobbying influence, is the soy industry. Soybeans are grown in unbelievable quantities all over the world. And based on early reports of the potential for one of soy s chemical components, genistein, to...
Soy A Source of Aggression
Thursday, 20 January 2011 09:04 AM
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