Showing posts with label saturated fat. Show all posts
Showing posts with label saturated fat. Show all posts

Monday, May 6, 2013

Saturated Fat Vs. Trans Fat

Fats have certainly gotten a bad rap in the past few years. The new health craze has pushed for even more low-fat products.  But then again, some fats are good. This back and forth on fat sure makes it hard for consumers to know what to eat. Yes, you do need fat in your diet. It is essential for hormones, insulation, and protection of your organs from damage. The truth is that you do not need as much fat as you think. Also, the quality of the fat you eat is important. I am just going to focus on the two major harmful fats, Trans fat and Saturated fat. The healthy fats, Monounsaturated and Polyunsaturated, will be covered later. 

What Are Saturated Fats?
Saturated fats are mainly found in animal products and are typically solid at room temperature. Their chemical makeup consists of carbon atoms that are saturated with hydrogen atoms (hence the name "saturated" fat). The American Heart Association recommends limiting your intake of saturated fats to less than 7% of total calories. If you are consuming a 2,000 calorie per day diet, your intake of saturated fat would be less than 16 grams. 

Where Do You Find Saturated Fats in Foods?
Saturated fats occur naturally in many foods. Some examples include fatty beef, pork, and poultry with skin. Saturated fat is also found in butter, cheese, ice cream, and other dairy products made from whole or 2% milk. Many baked and fried foods contain high levels of saturated fats. 

Why Are Saturated Fats Harmful?
Saturated fat raises total blood cholesterol and LDL (bad) cholesterol levels. This increases your risk of heart disease and stroke. Studies have shown that saturated fat may also increase your risk of developing type 2 diabetes. 

What Are Trans Fats?
Trans fats are made during food processing through the partial hydrogenation of unsaturated fats. Hydrogenation basically means that hydrogen atoms are added to the carbon atoms. This process creates a product that is less likely to spoil, which increases the shelf-life of many foods. The American Heart Association recommends limiting your trans fat intake to less than 1% of your total calories. If you are consuming a 2,000 calorie per day diet, your intake of trans fat would be less than 2 grams. 

Where Do You Find Trans Fats?
Trans fat is found mainly in processed foods. Examples include cookies, crackers, cakes, some stick margarines, fried foods (donuts, French fries), chips, candy, and frozen dinners. When reading nutrition labels, look for the words "partially hydrogenated" in the ingredient list. Any oil that is partially hydrogenated is a trans fat. Be aware of the "0 Trans Fat" products. The FDA allows that phrase to be on any product with .5 grams of trans fat per serving. Since many people do not stick to serving sizes, they may be consuming more trans fat than they think. 

Why Are Trans Fats Harmful?
Trans fats raises your LDL (bad) cholesterol and lowers your HDL (good) cholesterol, a double whammy! Trans fats increase your risk of developing heart disease and stroke. Trans fat also increases blood triglyceride levels, which leads to hardening of the arteries (atherosclerosis). Studies have also shown that trans fat increases inflammation by damaging the cells lining your blood vessels. 

Tips for Lowering Saturated and Trans Fat
1. Eat a balanced diet rich in fruits and vegetables (no trans/saturated fat!).
2. Choose leaner cuts of meat and trim visible fat before cooking.
3. Remove the skin from chicken, turkey, and other poultry.
4. Drink low-fat or skim milk rather than whole or 2%. You will still be getting the same amount of calcium.
6. Decrease your intake of fast food. Many fast food restaurants still use partially hydrogenated oils for frying. 
7. Consume monounsaturated fat (olive oil) and polyunsaturated fat (soybean, sunflower oil).

Remember, not all fat is bad. You need fat in your diet! Also, be aware of the low-fat products. These so-called-healthy products simply swap saturated and trans fat for sugar. When in doubt, it is better to opt for a little fat over a lot of sugar. 

Tuesday, April 30, 2013

Cholesterol: What You Need to Know

True or False?: The highest predictor of high blood cholesterol is eating high cholesterol foods.
          False: The main culprit to raising blood cholesterol is saturated fat.

True or False?: Lack of physical activity is a risk factor for heart disease.
          True: Regular physical activity lowers your LDL (bad cholesterol) levels and can raise your      HDL (good cholesterol) levels.

Let's break down what this all means:

What is Cholesterol?
Cholesterol is a fatty-like substance that the body uses for many chemical processes. Cholesterol is used to produce sex hormones, is converted to bile acids to help digest food, and it builds and repairs cells.

How Does Cholesterol Cause Heart Disease?
When there is too much cholesterol in your blood, it builds up in the walls of your arteries. This buildup causes the arteries to become narrowed. Thus, blood flow to the heart is slowed down or blocked. If the blood supply is completely cut off by a blockage, the result is a heart attack.

What is LDL (Bad) Cholesterol?
LDL is called the "Bad" cholesterol because it collects in the walls of your blood vessels and causes blockages. Eating a high saturated fat diet increases your levels of LDL cholesterol.

What is HDL (Good) Cholesterol?
HDL acts as a maintenance crew for your blood vessels by removing harmful cholesterol. HDL transports LDL to the liver where it can be reprocessed.

Additional Factors That Affect Cholesterol
-Obesity
-Lack of physical activity
-Cigarette smoking
-High blood pressure
-Family history of heart disease
-Age (men >45years)(women >55years)

Now on to the fun part! Here is what you can do to decrease your cholesterol! 
1. Decrease the amount of saturated fats in your diet. A goal for saturated fat is to aim for less than 7% of your calories.
2. Maintain a healthy weight!
3. Include physical activity every day!
4. Increase the amount of fiber in your diet!
5. Eat fruits and vegetables! They have no cholesterol; but, they are packed with fiber!