A High Fat Diet leads
to CHD. Discuss
Although the impact
might not be direct, a high fat diet provides factors that lead to CHD.
Coronary Heart Disease has several risk
factors associated, and one of the main factors is high level of cholesterol. Cholesterol is a fat made by the liver from
the saturated fat in diet. Cholesterol is essential for healthy cells, but too
much in the blood can lead to CHD. Cholesterol is carried in the bloodstream by
molecules called lipoproteins. Low density lipoproteins (LDL) is often referred
as ‘bad cholesterol’. This is because it carries cholesterol to tissues
including heart arteries, whilst High-density Lipoprotein (HDL) helps remove
cholesterol from arteries to livers, where it is broken down. LDL cholesterol
is harmful as it tends to build up on the walls of the coronary arteries. LDL
cholesterol makes up fatty deposits called atheroma and this builds up on the
walls of the coronary arteries. This makes the arteries narrower, restricting
the flow of blood to the heart muscle. This process is called atherosclerosis.
Moreover, A high fat
diet influences the chance of getting CHD by developing diabetes. High-fat diet
and obesity cause beta cells to lose their ability to sense glucose in the
blood, which is diabetes type 2. Diabetes lead to CHD as it cause the lining of
blood vessels to become thicker, which can restrict blood flow. This leads to
atherosclerosis, doubling the risk of developing CHD.
However, there are
some factors that are not necessarily related to high-fat diet. Smoking is a
major risk factor for CHD as both nicotine and carbon monoxide put a strain on
the heart by making it beat faster. Moreover, some factors associated with the
likelihood of developing CHD are related to a person’s environment and
lifestyle. Lack of exercise contributes to obesity and high blood pressure,
which causes strain on heart and make it pump harder. Sometimes, factors are
even uncontrollable. These includes person’s gender, as men are more likely to
have CHD than women, and person’s age as CHD is more prevalent in older people.
Also there are genetic factors, as CHD tends to occur more frequently in some
families than others with similar lifestyle.
In conclusion, it is
not only single factor that contributes to CHD, but complicated interactions of
many factors. For instance, although one may have inherited the genes for CHD,
it may not be expressed if he or she has a healthy lifestyle. Vice versa, one
can develop CHD without any social or genetic factors if diet are not balanced.
However, I personally believe high-fat diet is the most hazardous factor, as it
leads to several different conditions such as atherosclerosis, diabetes and
obesity, which increase the likelihood of developing CHD.
Reference :
- Oxford IB Biology
Textbok
WWW:
답글삭제Good arguments with strong supporting details including other factors that cause C.H.D. Nice intro and conclusion.
EBI:
Even better if you define the biological terms in more detail.
Questions:
1. What is type 2 diabetes ?
2. Is there other factors?
WWW:
답글삭제Good arguments with strong supporting details including other factors that cause C.H.D. Nice intro and conclusion.
EBI:
Even better if you define the biological terms in more detail.
Questions:
1. What is type 2 diabetes ?
2. Is there other factors?
1.Type 2 diabetes is the most common form of diabetes.If you have type 2 diabetes your body does not use insulin properly. This is called insulin resistance. At first, your pancreas makes extra insulin to make up for it. But, over time it isn't able to keep up and can't make enough insulin to keep your blood glucose at normal levels.
답글삭제2. Amongst different fat, it is only saturated fat such as animal fat that contributes to production of LDL. Moreover, lack of exercise and stress are the two other factors of CHD, as lack of exercise causes obesity, which may cause astheroclerosis.