Coloring Our World-How Hues Can Help and Heal


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We continuously experience the subtle influence of colors in our surroundings from relaxing in a hot tub amidst sparkling blue lights to sleeping soundly surrounded by soft-green walls.

While humans have long appreciated nature’s chromatic displays, it wasn’t until 1666 that Sir Isaac Newton proved that white light from the sun refracted through a prism separates into the individual bandwidths we perceive as hues.  A growing body of research by physicians, environmentalists, psychologists and alternative medicine specialists is now exploring how color–as light and pigment–can affect people physically, mentally and emotionally.

According to Pakistani research physicists Samina T. Yousuf Azeemi and S. Mohsin Raza, working from the University of Balochistan, “Colors generated electrical impulses and magnetic currents or fields of energy that are prime activators of the biochemical and hormonal processes in the human body.”  Different colors cause different reactions, from stimulating cells to suppressing the production of melatonin.

Published in the journal Evidence-Based Complementary Alternative Medicine, Azeemi and Raza’s photobiology research, applied to chromotherapy, supports premises of ancient Chinese, Egyptian and Ayurvedic healing traditions in which color is intrinsic to healing: for example, red increases circulation; yellow stimulates nerves; orange increases energy; and blue and green soothe everything from skin irritations to anxiety.

Blue light can reset our biological clocks.  Although electric light attempts to mimic natural sunlight, the body does not sense it that way, according to findings published in Environmental Health Perspectives.  During the day, artificial light with more blue wavelengths may help improve the performance of students and employees working indoors; at night, a reduction of the blue portion in artificial lighting provided for shift workers could protect against sleep disturbances.  The irony, notes Science Writer David C. Holzman, of Lexington, Massachusetts, is that applications of blue light are now used to cure some of the very things it can cause–sleeplessness and depression.

Sonya Nutter, a Kansas City mother of three elementary school children, can attest to the soothing effect of blue light when soaking in her Kohler chromotherapy tub in the dark: “It’s even better than lavender scent for calming,”she says.

“Color clearly has aesthetic value, but it can also carry specific meaning and information,” says Andrew J. Elliot, Ph.D., professor psychology at the University of Rochester, in New York.  He and a team of researchers concluded that, “Seeing red is not good before taking a test measuring performance” (Journal of Experimental Psychology: General).  In contrast, they found that seeing green enhances creative performance.

Photodynamic therapy, a recently developed, non-invasive cancer treatment, involves injections of a light-sensitive solution, followed by shining laser-emitted blue light on internal tumors or light-emitting diodes (LED) on surface tumors.  A National Cancer Institute fact sheet explains how such light kills cancer cells and shrinks tumors.


Based on the success of NASA experiments and research at the University of Alabama at Birmingham Hospital, red LED lights are also helping cancer patients deal with sore mouths associated with chemotherapy and radiation used for bone marrow and stem cell transplants.  Treating diabetic ulcers is another application, according to a 2012 study in the Journal of Endocrinology, Metabolism, and Diabetes of South Africa.  Red light sessions at many medical spas help rejuvenate aging skin by stimulating collagen production.

Color as pigment can convey subtle cues to influence our perceptions, attitudes and behavior.  In a study conducted at England’s Oxford University and Spain’s Polytechnic University of Valencia, for example, participants believed that hot chocolate tasted better in orange mugs than any other color, with white scoring lowest.  “Color associations are so strong and embedded so deeply that people are predisposed to certain reactions” when the see a color, explains Elliot, a learned association that is often culturally based.

Because color can engender individual emotional response, it plays a major role in one’s preferences in surroundings, including wall colors, furnishings and appliances.  Pantone, a leading provider of color systems to businesses worldwide, annually recommends a specific color that it feels best connects with the current zeitgeist, or prevailing spirit and mood, so that manufacturers of paints, kitchenware and fabric will produce the look people with want to have around them.

In 2011 Pantone picked a vibrant pink.  Leatrice Eiseman, executive director of the Pantone Color Institute, explained that “In times of stress, we need something to lift our spirits, a captivating, stimulating color that gets the adrenaline going.”  Now sensing greater optimism, their 2013 color choice is a vivid emerald, described as “lively, radiant and lush…a color of elegance and beauty that enhances our sense of well-being, balance and harmony.”

This article is provided by Judith Fertig.  Judith Fertig blogs at AlfrescoFoodAndLifestyle.blogspot.com.

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