2014년 9월 22일 월요일

Articulation

1) My argument

My argument is that low-fat food is always a healthy choice.
I'm going to argue that many low-fat foods are unhealthy in various ways. I want to broke up this stereotype and what is the best to way not to loosing fat but keep nutrients.


2) How I found my argument 

While finding research questions about  medical danger and solution that are prevalent in our society. But I don't have no idea evolving my research questions, so I change my direction to human health related to food medical science (related to medical detective). I already have a doubt that why many people tend to persist that foods in which the fat is decreased are always good to their diet and blindly purchase the low-fat foods. Through this thought, I hold my argument.


3)New research question

 I have several questions that need to be resolved.
a) Are there some nutritional differences depending on the kinds of low-fat foods or people?
b) What information many food companies or advertisements are deceiving?
c) How we can keep our health and reduce the fats both simply?
I'll continue researching and finding suitable articles that intensify my idea.


4) Connections to the Harvard Sampler 

This argument has a connection to the Harvard Sampler, especially 'medical detective.' According to the book, there are various situation about medical news. I think low-fat food can be a topic about medial news and have many points of view or criticisms.




2014년 9월 12일 금요일

Research 4

source: http://www.sparkpeople.com/resource/nutrition_articles.asp?id=60

my topic:
Low-fat food is always a healthy choice?

what I hope to learn from this source:
six health risks you're taking when you restrict your fat intake too far.


notes:


1. Poor Vitamin Absorption
Eating a diet too low in fat can interfere with the absorption of the fat-soluble vitamins A, D, E and K. Because these nutrients are fat soluble, your body needs dietary fat to utilize them. These vitamins are stored mostly in the liver and fat tissue and are important in bodily functions such as growth, immunity, cell repair and blood clotting. If you're not eating enough fat to bring these vitamins into your body, they will be excreted, and you may be at risk for a vitamin deficiency.

2. Depression
A diet that's too low in fat—especially essential fatty acids, which your body can only get from food—might hurt your mental health. Both omega-3s and omega-6s play roles in mood and behavior. They are the precursor to many hormones and chemicals produced in the brain. One study published in the Journal of Affective Disorders has linked low and abnormal essential fatty acid intake to depressive symptoms. Other research shows that, because fatty acids help to insulate nerve cells in the brain, allowing these nerve cells to better communicate with one another. People who are deficient in omega-3s may suffer from bipolar disorder, schizophrenia, eating disorders, and ADHD.

3. Increased Cancer Risk
Colon, breast, and prostate cancers have all been correlated with low intakes of essential fatty acids. Research has shown that a high intake of omega-3s slows prostate tumor and cancer cell growth, too. If your diet lacks healthy fats, you could be increasing your risk of cancer.

4. High Cholesterol and Heart Disease
Low-fat diets also play a role in cholesterol levels and heart disease. When your diet is too low in fat, your body's level of HDL (the "good" cholesterol) goes down. This is problematic because you want your HDL level to be high to help protect against heart disease. HDL collects "bad" cholesterol from the blood and transports it to the liver for excretion. When those ratios are out of balance—and when your LDL ("bad" cholesterol) level gets too high, you face cholesterol problems and an increased risk of heart disease. Essential fatty acids, especially Omega-3s, can elevate HDL, improve cholesterol levels and protect the heart.

5. Imbalance of Nutrients—Especially Carbs
If you're not eating enough fat, then you're likely getting too much of other things, namely carbs and/or protein. This affects the overall balance of your diet, which could lead to health problems. A carbohydrate-rich diet can inflate appetite and girth and increases your chances of developing type 2 diabetes. On the flip side, a high-protein diet taxes the kidneys and liver and can lead to osteoporosis. Both cases can result in nutrient deficiencies. The key is to balance all three macronutrients—fat, carbs and protein—to ensure optimal nutrition and disease prevention (more on that below).

6. Overeating
If you're always choosing low-fat or fat-free foods at the grocery store, you could be shortchanging your weight-loss efforts. Many of these processed foods contain added sugars to enhance taste; often they're similar in calories to the original full-fat product. Research has shown that people tend to believe these foods are "freebies" and will even overeat them, thinking they're healthy or low in calories when they're anything but. Plus, fat helps carry flavor in our foods. It leads to fullness and satiety, which means you can get by longer on a meal or snack that provides fat without feeling the need to eat again soon. When that fat is missing, your appetite may get the best of you.


final thoughts:
There are so many risks hidden in dark side of 'low-fat'. These risks cause not only just physical health problem but mental problem that can destroy the rest of our life.


Research3

source
http://www.sparkpeople.com/resource/nutrition_articles.asp?id=60
http://empoweredsustenance.com/low-fat-diet-bad/

my topic:
Low-fat food is always a healthy choice?

what I hope to learn from this source:
How much fat we need (enough)

notes:
As a general rule of thumb, we should eat no less than 40% of our calories as fat. Many individuals thrive on a 50% fat diet and some people feel best on as much as 60% of calories as fat.
For a 2,000 calorie diet, obtaining 40% of calories from fat means eating about 90 grams of fat. Over the course of the day, if we are eating real foods prepared from scratch, an example looks roughly like:
  • 2 Tbs. butter
  • 1 Tbs. coconut oil (coconut oil is extremely healthful but it will not stimulate bile production, according to my extremely knowledgeable mentor. Consume it in addition to animal fats)
  • 2 whole eggs
  • 1/2 avocado
  • 1 serving fatty steak (grassfed, of course!)
  • 1 cup whole milk
  • 1/2 cup full-fat ice cream
As you can see, the fats in this example are primarily saturated fats from the coconut oil, dairy, eggs, and meat. The avocado provides healthy monounsaturated fats. Vegetable oils should be completely avoided, because the high ratio of polyunsaturated fats is unnatural and inflammatory. Nuts and seeds (with the exception of coconut) should be consumed only in small amounts to prevent an imbalance of omega-6 to omega-3… but that discussion is a whole different blog post, and it is coming soon!


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For healthy adults, the Dietary Guidelines for Americans recommend 20% to 35% of your daily calories come from fat. Both SparkPeople and the American Heart Association take a middle of the road approach, advocating a 30% fat intake. Use the following chart to see your estimated daily fat recommendations based on these ranges.


Lower fat isn't necessarily better. Regularly consuming fewer than 20% of your daily calories from fat (see "Too Low" on the chart above) will put your health at risk in many ways as discussed above. A diet too high in fat (see "Too High" on the chart above) can also lead to problems—heart disease, diabetes, cancer and weight gain.



final thoughts:
People have to intake some fats according to their health condition or daily calories. Just maintaining a nutritionally balanced diet can makes well-balance especially in fat, not in constant fear of intaking fat.

2014년 9월 11일 목요일

Research2

sourcehttp://www.organicauthority.com/health/why-low-fat-foods-arent-good-for-you.html

my topic:
Low-fat food is always a healthy choice?

what I hope to learn from this source:
What's a calorie-conscious cosumer to do

notes:

Wouldn’t you rather eat one serving of your favorite dessert in the world than three servings of a mediocre treat from the vending machine? Of course you would. Although the American ideal of “more is more” and “bigger is better” has permeated many facets of our culture, cuisine included, don’t jump on the monkey train. One spoonful of full fat sour cream on your potato is far more satisfying than three scoops of non-fat sour “cream.” It is better for your body, and better for your mind as it gives you no sense of deprivation.
If you have been terrorized about fats by the modern diet industry to the point where seeing a pat of butter gives you an anxious reaction, focus on introducing the so-called “healthy” fats into your diet such as those found in walnuts, almonds, avocado and olives.Your body and brain will thank you, and you will probably find that you are feeling healthier and more energetic as well.
Convince yourself that with food, quality is more important than quantity and resolve to indulge in conscious eating. A very low-fat diet may save you a few calories today, but in the long run it could be setting you up for blood sugar imbalances and even future weight gain.


final thoughts:
I impress in "quality is more important than quantity". People have to know that low-fat foods may have imbalance of fat and lead you blood-desease

2014년 9월 6일 토요일

Research

source:
low-fat diet: whay fat-free in't trouble-free
http://www.webmd.com/diet/low-fat-diet

low-fat food, good or bad?

my topic: Low-fat food is always a healthy choice?

what I hope to learn from this source:
I want to know the meaning of 'low-fat' and the reason why we need fat.

notes:

There are "fat-free," "low-fat," "light," and "reduced-fat" products available.
Here's what those terms mean:
  • "Fat-free" foods must have less than 0.5 gram of fat per serving.
  • "Low-fat" foods must have 3 grams of fat or less per serving.
  • "Reduced-fat" foods must have at least 25% less fat than regular versions of those foods.
  • "Light" foods must have either 1/3 fewer calories or 50% less fat.

Why do we need fat?
Fat isn’t bad — we actually need it to survive. Fat helps protect and cushion our critical organs, helps keeps nerves functions, keeps us warm and is a valuable energy source. It also helps transport vitamins A, D, E and K through our body and helps our immune system properly function.
About 20 to 30 years ago, the recommendation to go low-fat took America by storm. The creation and sale of low-fat products became the hottest fad. To this day, folks still can’t shake the low-fat state of mind.

Keeping the amount of fat in your diet down to about 30% is still important. But what's also important is that you're eating the healthier fats, sometimes called "good” fats.
"Good" fats include both monounsaturated and polyunsaturated fats.
  • Monounsaturated fats (like canola and olive oils) are those that have been found to lower the "bad cholesterol" in the bloodstream and raise the amount of HDL "good cholesterol." HDL appears to actually clear the "bad" types of cholesterol from the blood.
  • Polyunsaturated fats found in fatty fish such as tuna and salmon help lower cholesterol.
Those don't include saturated fats, which are found in animal products (beef, pork, butter, and other full-fat dairy products), or artificial  trans fats, found in hydrogenated and partially hydrogenated oils.
Choose lean cuts of meat and fish, and low-fat dairy products, and eliminate trans fats from your diet as much as possible.


final thoughts:
'Low-fat' foods have a little of fat, but these make us put other ingredients that are like sweeteners or eat much. Also, we have to eat the fats. If we want to eat less fat, our nerves functions and energy sources suffer greatly.

Research Proposal

 My current toic is low-fat food. I want to research low-fat food is really helpful to make our health.
I think my final persuasive essay will be about current issue of people looking for low-fat food and the adventages of disadventages of low-fat food.
 As I enjoyed eating low-fat food once, I'll reveal the facts of low-fat food in detail. I wonder whether advertisement of low-fat food is real. Also, it is curious that people only accept the ad point which is named 'low-fat' without any doubt. I think my reader also start looking back to their consumtion habit that relax when they buy low-fat foods and having a question about how these make them slim and health.
 I already know that low-fat food has less fat like trans fat and saturated fat or calorie than other food and there are too many low-fat food in any store. My opinion is low-fat foods do not help just because of loww fat. I want to persuade people of bad effects of that food and less perchase.
 My opponets will say that of cource, less fat makes people slim and eventually get health more. I anticipate arguing against diet that are high in fat are often high in calories and can lead to weight gain and cause diseases.