In a nutshell, an allergy can be defined as an abnormal reaction from an individual’s immune system normally against a harmless substance. Individuals with no allergies would not have a reaction to these substances, or allergens, but the body’s of those who do release certain chemicals and it is these that cause the allergy symptoms.

An allergy can range from such things as itchy eyes to rashes to runny nose and is so widespread that they can affect 25% of the population at some stage of their lives. People have to be aware though, that these symptoms can be caused by factors other than an allergy as well, and could well be from a disease instead. More or less anything can be classed as an allergen for an individual but the most common come from pollen, dust mites, pets, insects, industrial chemicals, certain medicines and some foods like eggs and milk.

Common Allergic Reactions

The immune system of an allergic person reacts by producing special kinds of antibodies called IgE when it thinks it is being “damaged” by an allergen, and these antibodies attack the invader. This procedure then causes other blood cells to discharge other chemicals, which together with the antibodies cause the allergic reaction symptoms.

Food Allergies

The heart is a pump that is designed to force blood through the body and as with any type of pump, it works by generating pressure. In the body, the blood is pumped through the arteries to all major organs, but if there is too much pressure it can put a strain on the heart itself or the arteries, causing all sorts of problems.

Blood pressure is dependent on two things. The first is the force with which the heart pumps the blood around the body, and the second is the narrowness of the arteries. Hypertension happens when the blood is forced with increased pressure through the arteries.

When blood pressure is measured, it is done so using two numbers, an example being 120 over eighty. The first number listed is the systolic blood pressure which is the maximum pressure exerted on the arteries when the heart beats, and the second number listed is the diastolic blood pressure, or the minimum amount of pressure on the arteries when the heart is relaxed. The example above is of a normal blood pressure reading.

Blood pressure can be considered high when the systolic blood pressure reading is constantly above 160, and/or the diastolic blood pressure reading is above 100. One of the biggest problems with high blood pressure though, is the fact that it doesn’t always cause any symptoms meaning it may go unnoticed until a later complication such as a heart attack or stroke.

Other complications arising from high blood pressure can be an aneurysm, heart failure, eye damage, kidney failure or atherosclerosis, which is the narrowing of the arteries. Some factors that could contribute to high blood pressure include hereditary reasons, obesity, kidney disease, diabetes, excessive salt intake, lack of exercise and high intake of alcohol.

High Blood Pressure

Cholesterol is a lipid, or fat, of the body, and it is this along with another lipid called triglyceride that are vital building blocks of a cell. They are also used in the production of hormones as well as producing energy. Cholesterol is mainly produced in the liver, but it can also be ingested with certain foods.

There are two types of cholesterol and just to keep things simple, these can be classed as the good sort (high-density lipoprotein or HDL) and the bad sort (low-density lipoprotein or LDL). The HDL is effective in reducing cholesterol by transporting it back to the liver from where it is eliminated, whereas the LDL can contribute to certain diseases associated with the heart or blood circulation. HDL levels can be raised through exercise and LDL lowered by eating less saturated fat or sometimes with the aid of medication.

Cholesterol levels can be hereditary as well as being influenced by which part of the world the sufferer lives in. Northern Europeans have higher levels than their Southern counterparts, for example, and a much higher level than Asian people.

High Cholesterol

There are no symptoms of having high cholesterol and it is only one factor of many that can contribute to hardening of the arteries. Other factors include smoking, diet, alcohol intake, exercise and body weight. If going on a cholesterol lowering diet doesn’t help to reduce the levels, then medication will be required to assist the process.