Preservatives are chemicals used to keep food fresh. Although there are a number of different types of food preservatives, antimicrobials, antioxidants, and products that slow the natural ripening process are some of the most common.

Unlike processed honey, raw honey is not heated or filtered and retains more nutrients. Raw honey contains small amounts of the same resins found in propolis. Honeybees make propolis with plant resins and their own secretions. The bees use this substance to seal the hive and protect it from bacteria.

Intestinal parasites in the body are commonly caused by poor sanitation and hygiene, as well as international travel to locations where parasite infections are common. In some cases, worms may be spread through sexual intercourse when anal and oral sexual contact occur, according to Planned Parenthood.

Patchouli oil is an essential oil with a distinctive earthy scent. It is found in a number of fragrances, hair care and bath products because of its aroma.

A puffy, swollen face occurs when fluids have built up in the facial tissues. A number of home remedies exist for treating mild swelling of the face.

Different body types are better suited to certain sports and physical activity. For example, the requirements of basketball tend to exclude extremely short players from advancing to the professional leagues.

When you have a sprained ankle, immobilization is key in the healing process, and walking boots of all kinds have been shown to be an effective tool. New designs and types of walking boots are constantly in development to improve patient compliance with the removable boot and increase the efficacy of treatment.

Tendons connect muscles to bones. The tendons located on your hand's palm side are responsible for bending your fingers and are termed flexor tendons, according to the American Academy of Orthopaedic Surgeons.

The U.S. Food and Drug Administration has classified the food additive monosodium glutamate as generally safe. Even so, some people report side effects after eating food containing MSG, which is commonly used as flavor enhancer in many restaurant meals and packaged foods.

Ibuprofen is a pain reliever known as an NSAID, or non-steroidal anti-inflammatory drug. According to Drugs.com, most people can take up to 800 milligrams of ibuprofen four times a day without serious complications. Higher doses of ibuprofen can cause symptoms of overdose.

Birth control pills, or oral contraceptives, contain female hormones that suppress ovulation--the monthly release of an egg from the ovary. Suppressing ovulation prevents pregnancy because without an egg, conception cannot occur.

It is almost impossible to avoid the daily ingestion of toxins, whether they are environmental pollutants such as pesticides, mold, automotive exhaust, and cigarette smoke; unhealthy foods and water; or whether they emanate from household elements such as carpeting, wallpaper, and the like.