why is ldl bad and hdl good

why is ldl bad and hdl good

Cholesterol isn t just something that sits in your body like fat around your waist. It s carried through your bloodstream by carriers made of fat (lipid) and proteins. These are called no big surprise lipoproteins. Two types of lipoproteins carry cholesterol to and from cells. One is low-density lipoprotein, or LDL. The other is high-density lipoprotein, or HDL. The amount of each type of cholesterol in your blood can be measured by a blood test. LDL cholesterol is called bad cholesterol. Think of it as less desirable or even lousy cholesterol, because it contributes to fatty buildups in arteries ( ). Plaque buildups narrow arteries and raise the risk for, and can narrowed arteries in the legs). HDL cholesterol is good cholesterol. Think of it as the healthy cholesterol, so higher levels

 why do sex hurt the first time

why do sex hurt the first time

When a woman has vaginal sex for the first time, it can be a little painful. PThere may also be a small amount of blood, but this isn't always the case and usually occurs because the hymen has been broken during sexual intercourse. The hymen is a small piece of thin skin (membrane) that can either partially or totally cover the entrance to the vagina. A woman might already have broken her hymen without knowing about it; this can happen whenPplaying sports or using a tampon. When a man has sex for the first time it shouldn't hurt, but he can make it easier for his partner by using foreplay, making sure there is plenty of lubrication and by being gentle andPgoing slowly. Anal sex can be painful for both men and women the first time, and there may be a little bleeding. There are things you

 why do we have to pay income tax

why do we have to pay income tax

Anil Lamba What is income tax? Why do we pay taxes? Should we pay income-tax? Let me try and answer some such questions. What is income tax? A straightforward interpretation would be that it is a tax on the income. So to understand income tax, we need to understand these two words - tax and income. What is tax and what is income? A tax is a levy - it is a statutory, mandatory payment made to the government. And, what is income tax? When the amount to be paid is a percentage of the income, it is called income tax. When we pay to the government a percentage of the value of goods manufactured, it is called 'excise duty'. When it is a percentage of goods entering into the country, it is called 'customs duty'. When it is a percentage of the value of goods entering a city - 'octroi'. When it is

 why do we have a christmas tree

why do we have a christmas tree

When you think of Christmas, one of the first images to spring to mind is probably a Christmas tree, covered in twinkly decorations, lights and tinsel. But where did the tradition of having a fir tree in our house and decorating it like this come from? Many people think the tradition of Christmas trees in Britain started with the Victorians. This refers to the time when Queen Victoria was on the throne, from 1837 until 1901. Queen Victoria and her husband Prince Albert were known to be very big fans of Christmas! However, the tradition actually dates back further than that. It originally came from Germany, where Prince Albert was actually born, and was introduced to England during the Georgian period, when King George III was on the throne. He had a German wife called Charlotte, who it is

 why do people have different belief systems

why do people have different belief systems

Every human being is unique and disctinct and has the right to choose their own belief systemm; because we are not the same we have different ways of aproaching our physical and spiritual life. The world of today has a wide variety of belief systems, this religions are no longer mantained on the same region they where created but they have spread all along the world; people now have a large variety of belief-systems to choose from. Furthermore, families no longer obly their son(s) to continue their parent's or ancestor's religion but instead they enforce their kids to choose, wisely, the religion they want. ...

 why do people buy fair trade products

why do people buy fair trade products

Purchasing products that are can reduce poverty, encourage environmentally friendly production methods and safeguard humane working conditions. Simply look for the fair trade label on productsВsuch as coffee, chocolate or clothing. The fair trade label means an organization such as Вhas certified that farmers and other producers adhere toВ. ВThe organization audits the product's supply chain to ensure fair trade prices have been paid. The importer and the processor pay the costs of acquiring a license, which begins the process. 1. "Fair trade makes free trade work for the worldвs poor,"В В Paul Rice, Fair Trade USAвs founder, president and CEO. Free trade leaves small-scale producers behind when large subsidized companies start to take over their industries. ...

 why do some things float and others sink

why do some things float and others sink

Students are given a plastic tub filled with a variety of materialsвwood of different sizes and shapes, a pencil, a marble, a styrofoam ball, a cork, a plastic spoon, a rubber band, a penny, a toothpick, a paper clip, and whatever else is handy. They are asked to predict which objects will float and which will sink when placed under the level of the water and let go. Students perform the experiment and compare the results to their predictions. They discuss why they thought certain objects would sink/float. The class brainstorms a list of properties of the different objects that may affect whether the object floats or sinks. Using the objects they already have, students do simple tests to rule out some of the properties (such as color, shape, etc). In the end, it should be apparent that

 why muslim prayer 5 times a day

why muslim prayer 5 times a day

According to Prophet Muhammad, the only thing that separates Muslims from non-believers is the prayers. It is the second pillar of Islam after the declaration of faith. Islam is based on five pillars and if one is missing then the whole building collapses. There is no other religion which instructs its followers to pray five times a day therefore Salah is the identity of Muslims. Muslims are ordered to pray five times a day at specific times; before sunrise, midafternoon, late afternoon, sunset and at night. Both the Quran and the Hadith of the Prophet strongly emphasizes the vitality of the five daily prayers in Islam. Salah is a way of totally submitting to the wills of Allah and showing gratitude to him because as Muslims, we donБt bow before anyone but Allah the Almighty. Allah the

 why do sperm cells have many mitochondria

why do sperm cells have many mitochondria

Eggs (ova) and sperm have half the number of chromosome One of the rod shaped bodies found in the nucleus of cells that contain genetic information (DNA). of normal body cells. They are called haploid cells rather than diploid An organism or cell that contains two copies of each chromosome. cells. A single egg cell is called an ovum. Collectively, eggs and sperm are called gametes or sex cells. When fertilisation occurs, an egg (ovum) and a sperm fuse to form a zygote. Eggs and sperm have several important adaptations linked to their structure. An egg cell (ovum) is one of the largest cells in the human body and can just be seen without using a microscope. Each egg cell has a haploid nucleus - containing only half the number of chromosomes of a normal cell nucleus. ...

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