All nutrients - proteins, starches, sugars, vitamins, minerals, enzymes and millions of unknowns - interact. Each requires all of the other nutrients in varying amounts to be properly utilized. All supplements lack most of the balancing nutrients, especially bioactive enzymes. If all are not present, the body leaches nutrients from its own supply (if it can afford to). Supplements create a balance/depletion see-saw effect.
I experimented with supplements for two years. I started this research while I was the nutritionist at a health food store. Of the 1,200 supplements we carried, I observed that only nine had any significant benefits. Those nine supplements were all prepared at temperatures below 82° Fahrenheit and were not chemically treated or extracted.
Over those two years, I observed that the remaining 1,191 supplements created toxicity throughout people's bodies, especially their glandular systems.
For example, many people who regularly consumed iron supplements had iron deposits somewhere in their systems. The worst deposits appeared as rust spots in Iridology. Almost all mega-dose-Vitamin C- takers suffered irritability, psychological problems and frequent hunger - sometimes compulsive - for ice cream, chocolate and/or other rich foods. This is because supplemental Vitamin C is spiky, like glass, irritating blood and nerve cells. It depletes fat from the blood and makes the blood highly acidic.
People often reported an increase in energy from taking supplements but I observed that the increase in energy was most often a toxic effect. The toxicity forced certain hormones to rush into the system, similar to caffeine or nicotine rushes that ultimately have damaging effects on the entire body.
Unless supplements are prepared correctly, the side effects outweigh the benefits. By the time I left supplement research, 6 of the 9 beneficial supplements had been destroyed: wheat germ oil, 2 brands of cod liver oil, shark oil and 2 brands of primary yeast powders. The pharmaceutical houses and the American Medical Association created a myth that synthetic, natural and organic were all the same; so why pay more? The media circulated the myth. So preparation and temperature quality controls became moot points. Manufacturers altered their processing to compete in the cheaper markets. The public are deprived and consequently suffer.