Repair of the main protein constituent of skin that provides strength, flexibility and resilience.

The process by which fats, oils and other lipids are decomposed, often resulting in undesirable odors and flavors, reducing nutritional value and introducing harmful oxidative compounds.

Any biochemical process that occurs within an organism that is necessary to sustain life.

Photosensitive cells in the eye used to differentiate colors and brightness in moderate and high levels of illumination.

Inflammation of the conjunctiva, the lining on the inside of the eyelids and covering the white of the eyes.

Age related loss of skeletal muscle mass, including quality and strength.

Food that is designed, engineered or marketed to be as desirable as possible. Often characterized by the presence of excessive salt, sweeteners and oils, these foods can overcome feelings of satiety to induce overeating..

A heart condition caused by reduced blood flow through the coronary arteries to the heart muscle, typically resulting in chest pain or heart damage.

A group of autoimmune diseases of the colon and small intestine, including chron's disease and ulcerative colitis.

Abnormal accumulation of fluid in the lungs

A disease that causes the formation of malignant cancer cells within the lining of the chest, abdomen or heart.

Unit of radioactivity corresponding to 37 billion atomic nucleus disintegration per second.

Nearsightedness or shortsightedness, caused by light being focused in front of the retina rather than on it.

Unenforced regulations developed by California Office of Environmental Health Hazard Assessment. Similar in concept to the EPA's Maximum Contaminant Level Goal (MCLG).

A condition that results from insufficient nutrient intake, excess nutrient intake or nutrient intake in the wrong proportions.

A group of diseases that impact the metabolism due to insufficient insulin production (Type 1) and/or high insulin resistance (Type 2), and a leading cause of death. Results in poor blood sugar control, frequent urination, increased thirst, increased hunger and other symptoms.

Particulate component of diesel exhaust, which includes diesel soot and aerosols such as ash particulates, metallic abrasion particles, sulfates and silicates.

Any single-celled eukaryotic (having a nucleus) organism, such as an amoeba.

Mallet shaped bone in the middle ear located between the incus and the tympanic membrane (eardrum).

Substances that are poisonous to the ecosystem.

Beam of energy composed at photons, which travel at the speed of light, 300,000 km/hr.

Monochromatic color that can be produced by shining white light through a prism.

Defective or insufficient absorption of nutrients from the small intestine.

Quantified environmental data for a product with pre-set categories of parameters based on the International Organization of Standards (ISO) 14040 series of standards, but not excluding additional environmental information.

Protein molecules made by the body that act as catalysts to modulate a vast array of biochemical reactions.

Exposure to an allergen that results in the development of hypersensitivity.

Smallest level of daily ingestion of at substance shown to have some harmful effect on laboratory test animals. Always larger than the No Observed Adverse Effect Level.

A state of having regulated responses to environmental conditions to retain stability.

Sound waves are pressure variations in a medium (air, water, etc.). The pressure differences create vibrations and are ultimately interpreted as sounds/noises when they reach the ears.

Lumps produced by sintering limestone and alumino-silicate (clay) during the cement kiln stage.

An acute episode of heart disease marked by the damage of heart muscle due to insufficient blood supply to the heart muscle, also called a heart attack.

Resulting in toxicity of the fetus.

The byproduct of the processing of phosphate ore; mainly in the production of fertilizers.

Daily ingestion level of at substance believed to have no harmful effect to all people, including susceptible populations. Typically between 10 times less and the same as the Reference Dose.

A term used to connect heat and moisture flows and their combined effect on building envelope (enclosure) performance.

Food sensitivity usually caused by difficulty digesting a particular food that does not involve an immune system response or the release of histamine.

Any compound or substance that may impair proper immune functioning.

An organization that publishes and researches information on the sustainability of building materials and advocates environmentally friendly building materials and building policies.

A full time employee is one who works at least the minimum amount of hours as definied by his or her employer. This is generally defined as 8 hours a day, 5 days a week.

Sound waves with frequencies less than 20 Hz. Too low for the human ear to hear.

Regulation of thyroid hormones responsible for the physical and chemical processes that occur in cells, allow growth and maintain body functions.

High energy particles made of electrons or protons and neutrons which are produced during radioactive decay.

A chemical or other agent that damages genetic material or reproduction, resulting in mutations or cancer.

Glasswork, which must be carefully designed in order to avoid excessive glare and heat gain.

A naturally-occurring radioactive metal element found at very low levels in soil.

The part of the digestive tract following the stomach where the majority of nutrients are absorbed.

Process of metabolism which occurs during strenuous exercise in which cells produce ATP anaerobically and generate lactic acid as a byproduct.

A hormone that stimulates growth, cell reproduction and regeneration. It has an anabolic effect on the body, playing a critical role in childhood development and organ and muscle growth. It is boosted in the body during fasting, restful sleep and exercise.

The ability of an organism to maintain its body temperature within certain boundaries. Thermoregulation is one of the key aspects of homeostasis.