There are also some indications that low-fat diets and Nutrasweet all contribute to widening the very tiny gaps between ganglia in the brain. These gaps must be small for the electrochemical reactions to occur that give us THOUGHT. Widening the gaps leads to inabilities to think, reason, remember, exert motor control over oneself, etc.
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A couple of decades ago, the Navy accidently discovered that ELF (extra-low frequency) radio waves immediately and dramatically increased the triglycerides in the bloodstream of those exposed. Triglycerides are what cause hardening of the arteries.
There are dozens of anecodotes of folks across the country being diagnosed for "tinitus" for a persistent ringing/humming sound heard. Taos, New Mexico is well-known for folks having to move away from it because of the persistent humming they hear.