Why is it important to limit our intake of saturated fats and dietary cholestrol? please help?

Question

q2) one of your friends talks cinstantly about losing weight ,while another has decided she's goning to become a vegan.what advice would u give to each one of them and why?

please help me (this is a bio q)

Answer 1

It is important to limit our intake of saturated fats and dietary cholesterol if we want to lose weight, lower blood pressure and live longer.

Answer 2

There are three different kinds of fats in our diet.  

Saturated fats (sat fats) are fats that essentially come from animals (there are two plant sources of saturated fat, palm oil and coconut oil).  Most frequently, sat fats carry cholesterol.  

Excessive amounts of cholesterol are stored in the body, frequently in arteries (especially if one has a diet high in sugar).  The cholesterol ultimately plugs the artery which is, of course, very serious.  It becomes even more serious if the plugged artery is associated with the heart or brain as when the artery is plugged, blood flow is restricted and if that occurs in the heart, the person has a heart attack (part of the heart dies) or if in the brain, the person has a stroke (part of the brain dies) or, the person can totally die.

The second kind of fat is unsaturated fat which is the fat found in plant oil (except palm and coconut).  This oil is VERY good for you as it actually cleans your arteries of cholesterol!

The third type of fat is trans-fat.  This is an unsaturated fat that has been chemically altered to become saturated and, in reality, has had to have a greater negative effect than regular saturated fat.

You can tell the difference between a sat fat/trans-fat and unsaturated as the first are solid at room temperature and unsaturated is liquid at room temperature.

You should limit your daily intake of calories from sat fats to 10% of your calories.  Unsaturated fats should be around 15-20% of your daily intake of calories.  

However, with regard to weight loss, you simply must reduce your intake of calories.  There are diets that eliminate fats, or carbohydrates.  The reality is that the source of the calories makes no difference, it only matters that caloric intake must be slightly reduced.

The other important aspect of weight loss is to increase exercise.  You NEVER see a fat marathon runner and that is a BIG CLUE!   EXERCISE!

Becoming vegan basically eliminates saturated fats which is just fine.  In addition, sugar is eliminated which may be the biggest consideration in weight loss and health.  The vegan must be very careful to have a diet HIGH in beans and lentils as those have a large amount and a high variety of proteins that can be changed to proteins that humans need.