How to keep your skin looking great

In zootomy and dermatology, skin is an organ of the integumentary system composed of a layer of tissues that protect underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis.

The skin is often known as "the largest organ in the human body". This applies to exterior surface, as it covers the body, appearing to have the largest surface area of all the organs. Moreover, it applies to weight, as it weighs more than any single internal organ, accounting for about 15 percent of body weight. For the average adult human, the skin has a surface area of between 1.5-2.0 square metres, most of it is between 2-3 mm thick. The average square inch of skin holds 650 sweat glands, 20 blood vessels, 1000 melanocytes, and more than a thousand nerve endings.

The outermost epidermis is consists of stratified squamous epithelium with an underlying basement membrane. It contains no blood vessels, and is nourished by diffusion from the dermis. The main type of cells which make up the epidermis are keratinocytes, with melanocytes and Langerhans cells also present. The epidermis can be further subdivided into the following strata (beginning with the outermost layer): corneum, lucidum, granulosum, spinosum, basale. Cells are formed through mitosis at the innermost layers. They move up the strata changing shape and composition as they differentiate, inducing expression of new types of keratin genes. They eventually reach the corneum and become sloughed off (desquamation). This process is called keratinization and takes place within about 30 days. This layer of skin is responsible for keeping water in the body and keeping other harmful chemicals and pathogens out.

Blood capillaries are found beneath the epidermis, and are linked to an arteriole and a venule. Arterial shunt vessels may bypass the network in ears, the nose and fingertips.

The main cell types of skin are fibroblasts, adipocytes (fat storage) and macrophages. Sebaceous glands are exocrine glands which produce sebum, a mixture of lipids and waxy substances: lubrication, water-proofing, softening and antibactericidal actions are among the many functions of sebum. Sweat glands open up via a duct onto the skin by a pore.

The skin must be regularly cleaned. Unless enough care is taken it will become cracked or inflamed. Unclean skin favors the development of pathogenic organisms.

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Obesity

Fat distribution can influence a person's risk of disease. Fat carried around the waist and in the abdominal area, characterized by the "apple shape", is associated with an increased risk for many medical problems such as heart disease, cancer, high blood pressure, and diabetes. Fat that is mostly distributed around the buttocks and thighs is associated with a lower risk of developing these diseases.

As much as 50 to 75 percent of obesity has genetic influences. Just what those genetic influences are that affect body weight have not been identified.

Many people are tempted by ads that use celebrities to tout liquid fasting diets for weight loss. Ads claim quick and easy weight loss with use of such products. Very obese patients may be referred to these types of diets. Their diets are carefully supervised by their healthcare provider.

Many people are motivated to diet by wanting to be thin and attractive like the models we see everywhere - on TV and in magazines. What is far more important is that a leaner body reduces the risk for certain diseases.

Height and weight tables are generally used to determine how person's weight compares to a standard. However, weight in these tables is an overall measure of all components of the body. Individuals may differ in muscle, frame size and percentage of body fat. The waist to hip ratio of body composition assessment provides information on where the majority of body fat is located.

When considering long-term appetite suppressant medication treatment for obesity, you should consider the following areas of concern and potential risks. Currently, all prescription medications to treat obesity are controlled substances, meaning doctors need to follow certain restrictions when prescribing appetite suppressant medications. Although abuse and dependence are not common with non-amphetamine appetite suppressant medications, doctors should be cautious when they prescribe these medications for patients with a history of alcohol or other drug abuse.

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Medical conditions of menopause

Raloxifene (Evista) drug has some of the beneficial effects of estrogen without the increased risk of breast cancer. It is effective in building bone strength and preventing fractures.

Headaches, bloating, irritability, depression and fatigue are just a few of the unpleasant symptoms of premenstrual syndrome, which affects millions of women every month. But fortunately, PMS -- though widely believed to be a result of changes in hormone levels during a woman's menstrual cycle -- is not entirely beyond a woman's control.

So why do some women suffer more than others, and what can these women do to stop PMS from interrupting their lives? The answer may be found in nutrition and natural health remedies.

Primrose oil, flaxseed oil, lavender, parsley, bee pollen and chaste berries, used widely in Europe, are other proven natural remedies that can ease common symptoms.

Experts still aren't sure exactly what causes PMS. Some research shows that it's related to hormonal changes that occur during a woman's menstrual cycle. The symptoms may arise during ovulation or just before menses, or they may appear, disappear and reappear during the same cycle. For about one in 20 women, the combination is so bad that it creates a general depression that affects the daily course of their lives.

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