Density can be defined as the relationship between the mass of a substance and the volume it occupies. This concept can be confirmed by the equation that allows us to calculate the density:
d = pasta
volume
Density allows you to separate and identify substances, for example, lipoproteins are present in the body human in two ways, and the density is what allows to separate and identify them in low or high lipoproteins density. These substances are responsible for transporting cholesterol in the blood and identifying them is very important for health, as it exists a big problem with low-density lipoproteins, also known as bad cholesterol, because they are deposited on the walls of the skin. arteries. The walls becoming narrower make it difficult for the blood to pass through, which can lead to a complete blockage of the artery.
High-density lipoproteins, on the other hand, are known as good cholesterol, because they are transported to the liver from where they are excreted, reducing the amount present in the arteries. These lipoproteins receive abbreviations originated from English:
Low Density Lipoproteins (Low-Density Lipoproteins): LDL
High Density Lipoproteins (High-Density Lipoproteins): HDL
Below, see the difference in density of the two types of cholesterol:
Density (g/cm3) LDL: 1,04
Density (g/cm3) HDL: 1,13
With the arrival of winter, people with high cholesterol need to be aware: on cold days, probability of myocardial infarction is greater, as the blood becomes more viscous and can clog a vessel that is already narrowed. Myocardial infarction is popularly known as a heart attack, and can be identified by severe chest pain, left arm numbness and shortness of breath.
One way to improve HDL levels and lower LDL levels in the blood is regular exercise combined with a low-fat diet.
By Líria Alves
Graduated in Chemistry
See more!
Density class: which liquid is denser?
Source: Brazil School - https://brasilescola.uol.com.br/quimica/densidade-doencas-coracao.htm