Blood pressure (strictly speaking: vascular pressure) refers to the force exerted by circulating blood on the walls of blood vessels, and constitutes one of the principal vital signs. The pressure of the circulating blood decreases as blood moves through arteries, arterioles, capillaries, and veins; the term blood pressure generally refers to arterial pressure, i.e., the pressure in the larger arteries, arteries being the blood vessels which take blood away from the heart.

Arterial pressure is most commonly measured via a sphygmomanometer, which uses the height of a column of mercury to reflect the circulating pressure (see Non-invasive measurement).

Although many modern vascular pressure devices no longer use mercury, vascular pressure values are still universally reported in millimetres of mercury (mmHg).The systolic arterial pressure is defined as the peak pressure in the arteries, which occurs near the beginning of the cardiac cycle; the diastolic arterial pressure is the lowest pressure (at the resting phase of the cardiac cycle).

The average pressure throughout the cardiac cycle is reported as mean arterial pressure; the pulse pressure reflects the difference between the maximum and minimum pressures measured.Typical values for a resting, healthy adult human are approximately 120 mmHg (16 kPa) systolic and 80 mmHg (11 kPa) diastolic (written as 120/80 mmHg, and spoken as “one twenty over eighty”) with large individual variations.
These measures of arterial pressure are not static, but undergo natural variations from one heartbeat to another and throughout the day (in a circadian rhythm); they also change in response to stress, nutritional factors, drugs, or disease. Hypertension refers to arterial pressure being abnormally high, as opposed to hypotension, when it is abnormally low. Along with body temperature, blood pressure measurements are the most commonly measured physiological parameters.

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Psoriasis is a condition that is suffered by many millions of people all over the world, with various developed countries reporting incidence rates that are remarkably similar.

For instance, in the USA, the reported rate of severe psoriasis is somewhere between 2% and 3% of the population, whilst in Australia, the condition affects around 2% of the population as well.

Furthermore, it is suggested in some quarters that up to 20% of the population of the USA may have some form of psoriasis ranging from
the very mild to severe, and that perhaps as many as 4.5 million people could be serious psoriasis sufferers.

On top of this, it is reported that there are 150,000 new cases of psoriasis reported every year in the USA alone, so if it is assumed that psoriasis is as prevalent in other countries as it is in the States, it clearly represents a significant problem on a global scale.

For psoriasis sufferers, there is something of a ‘good news, bad news’ paradox with which most of these people have undoubtedly already learned to live.

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Many people are now turning to inexpensive and natural green tea weight loss plans to help them in their weight control efforts. It is simple too. You can drink green tea  like any other tea, usually without milk or sweeteners, or if you do not like the taste you can purchase green tea extract.

 Research has shown that a green tea diet helps to reduce weight by stimulating the body’s thermo genesis process, which increases the expenditure of energy and the oxidization of fat in the body. Many compounds found in plants have this effect. The special thing about green tea is that it does not increase the heart rate, and is therefore believed to be safer than diet pills such as ephedrine that also work by stimulating thermo genesis.

 A lot of people who are overweight have or are at risk of developing hypertension and other cardiovascular problems, so the fact that green tea does not put pressure on the heart, makes it a good choice. Ephedrine is not usually recommended if you are in this group but green tea is considered a safe option. It means that you can gradually increase your exercise levels without increasing your risk of heart problems.

 There are only two ways to lose weight: one way is by eating less (consuming fewer calories) and the other is by increasing expenditure of energy (using up more calories). Green tea works by increasing output and this can be by around 4%. Most scientists believe that this is caused by the high quantity of catechin that is in the tea and its extract.

 Green tea has the added benefit of containing powerful antioxidants that may be beneficial to your health in many ways, strengthening the immune system and protecting against disease.

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