People associate certain colors with certain flavors, and the color of food can influence the perceived flavor in anything from candy to wine. For this reason, food manufacturers add these dyes to their products. Sometimes the aim is to simulate a color that is perceived by the consumer as natural, such as adding red coloring to glacé cherries (which would otherwise be beige).
While most consumers are aware that food with bright or unnatural colors (children's cereals such as Froot Loops) likely contain food coloring, far fewer people know that seemingly "natural" foods such as oranges and salmon are sometimes also dyed to mask natural variations in color. Color variation in foods throughout the seasons and the effects of processing and storage often make color addition commercially advantageous to maintain the color expected or preferred by the consumer.
New studies now point to synthetic preservatives and artificial coloring agents as aggravating ADD and ADHD symptoms, both in those affected by these disorders and in the general population. Several major studies show academic performance increased and disciplinary problems decreased in large non-ADD student populations when artificial ingredients, including artificial colors, were eliminated from school food programs. But we must wonder what other negative effects are being caused by these pretty colors.
The food colors are known by E numbers that begin with a 1, such as E100 (turmeric) or E161b (lutein). The most common synthetic dyes used in food include:
- FD&C Blue No. 1 – Brilliant Blue FCF, E133 (blue shade)
- FD&C Blue No. 2 – Indigotine, E132 (indigo shade)
- FD&C Green No. 3 – Fast Green FCF, E143 (turquoise shade)
- FD&C Red No. 40 – Allura Red AC, E129 (red shade)
- FD&C Red No. 3 – Erythrosine, E127 (pink shade, commonly used in glacé cherries)
- FD&C Yellow No. 5 – Tartrazine, E102 (yellow shade)
- FD&C Yellow No. 6 – Sunset Yellow FCF, E110 (orange shade)
The following dyes are only allowed by the FDA for specific limited applications (most people don't eat orange peels, but how many people eat hot dogs and sausage?):
- Orange B (red shade) - allowed only for use in hot dog and sausage casings.
- Citrus Red 2 (orange shade) - allowed only for use to color orange peels.
Because of the concern of health risks related to chemical dyes, more natural dyes have been developed as seen below. Unfortunately, these are not quite as natural as the paints extracted by simple berries in the times of old. The extraction process has proven many of these ""natural" dyes to induce reactions from hives, to allergies to anaphylactic shock!
- Caramel coloring (E150), made from caramelized sugar, used in cola products and also in cosmetics
- Annatto (E160b), a reddish-orange dye made from the seed of the achiote.
- A green dye made from chlorella algae (chlorophyll, E140)
- Cochineal (E120), a red dye derived from the cochineal insect, Dactylopius coccus
- Betanin (E162) extracted from beets
- Turmeric (curcuminoids, E100)
- Saffron (carotenoids, E160a)
- Paprika (E160c)
- Elderberry juice
- Pandan (Pandanus amaryllifolius), a green food coloring
- Butterfly pea (Clitoria ternatea), a blue food dye
Because food dyes are generally safer to use than normal artists' dyes and pigments, some artists have used food coloring as a means of making pictures, especially in forms such as body-painting. Food colorings can be used to dye fabric, but are usually not wash-fast when used on cotton, hemp and other plant fibers. Some food dyes can be fixed on Nylon and animal fibers. Red food dye is often used as theatrical blood. Synthetic dyes may have excellent application in these areas, but they do not belong in the human body. Check the labels for the mentioned dyes, both natural and synthetic and do your best to avoid them.

Fluoride in drinking water was originally added in the 1940s to prevent tooth decay, or that was the cover story. The hard truth is that fluoride can do little to nothing to prevent decay. Studies have now shown that fluoride causes dental fluorosis (decreasing density) in 10% of the population! (see photo)
Dioxins are a class of chemical contaminants that are formed during combustion processes such as waste incineration, forest fires, and backyard trash burning. They are also used during some industrial processes like paper pulp bleaching and herbicide manufacturing. The highest environmental concentrations of dioxin are usually found in soil and sediment, with much lower levels found in air and water. Humans are primarily exposed to dioxins by eating food contaminated by these chemicals. Dioxin accumulates in the fatty tissues of the body.
Short-term exposure of humans to high levels of dioxins may result in skin lesions, such as chloracne and patchy darkening of the skin, and altered liver function. Long-term exposure is linked to impairment of the immune system, the developing nervous system, the endocrine system and reproductive functions. Chronic exposure of animals to dioxins has resulted in several types of cancer.
N,N-Diethyl-meta-toluamide, abbreviated DEET, is the most common active ingredient in insect repellents. It is intended to be applied to the skin or to clothing, and provides protection against tick bites, mosquito bites, chiggers, and other insects that can transmit disease. It has a faint odor and does not dissolve easily in water. DEET has been used in a number of insect repellent products including liquid sprays, lotions, and sticks. It has been estimated that about 30% of the U.S. population uses one or more products that contain DEET every year.
A cigarette is a small roll of finely cut tobacco for smoking, enclosed in a wrapper of thin paper. The main ingredient in cigarettes is tobacco, although the tobacco is not the most toxic part of the cigarette. Farmers use many chemicals to grow tobacco. They use fertilizers to make the soil rich and insecticides to kill the insects that eat the tobacco plant. After the tobacco plants are picked, they are dried, and machines break up the leaves into small pieces.
Chloroform is a colorless liquid with a pleasant, nonirritating odor and a slightly sweet taste. Several million tons are produced annually as a precursor to Teflon and refrigerants. In the past, chloroform was used as an inhaled anesthetic during surgery, but it isn't used that way today. Today, chloroform is used to make other chemicals. Other names for chloroform are trichloromethane and methyl trichloride.
Butylated hydroxyanisole (BHA) and the related compound butylated hydroxytoluene (BHT) are often added to foods to preserve fats. BHA and BHT are antioxidants. Oxygen reacts with BHA or BHT rather than oxidizing fats or oils, thereby protecting the foods from spoilage. While they are classified as antioxidants, there is nothing 'natural' about BHA or BHT. They are synthetic compounds produced in laboratories. The widespread use of BHA and BHT in foods, food packaging and non food products makes them exceedingly difficult to avoid.
Benzene is a natural constituent of crude oil and is one of the most basic petrochemicals. Benzene is a colorless and highly flammable liquid with a sweet smell. Most people are exposed to this chemical in some form or another every day. Benzene has been classified as a Class A carcinogenic by the Environmental Protection Agency. This is a chemical that also occurs naturally in the environment through gas emissions from volcanoes and forest fires. Benzene is also present in crude oil, gasoline and cigarette smoke. But the major threat from this chemical comes from Benzene that is used in a range of manmade products. Today, benzene is used mainly as an intermediate to make other chemicals. Its most widely-produced derivatives include styrene, which is used to make polymers and plastics, phenol for resins and adhesives (via cumene), and cyclohexane which is used in the manufacture of Nylon.
The foods currently lining U.S. supermarket shelves contain hundreds of additives designed to enhance color, texture, flavor, and shelf life. There are also dietary additives, such as vitamins, minerals, fatty acids and others. Dr. DeHaan is a purist, which means he believes that nature made it exactly the right way, with the right proportions, colors, textures, flavors, etc. If food items need additives, flavors, colors or to be fortified, they are not a good choice to eat.
Some members of Yersinia are pathogenic in humans. One in particular, Y. pestis, is the causative agent of the plague called Yersiniosis. Rodents are the natural reservoirs of Yersinia; less frequently other mammals serve as the host. Infection may occur through blood (in the case of Y. pestis it is spread by flea bites). The symptoms of plague depend on the concentrated areas of infection in each person. Examples are: bubonic plague in lymph nodes, septicemic plague in blood vessels, pneumonic plague in lungs, and so on.