Subcutaneous vs. visceral fat: Which matters most when battling the bulge?


March 31, 2008
Health, Uncategorized

There are an estimated 97 million adults in the US that are overweight or obese (NHLBI). The battle of the bulge is a unique challenge for both sexes looking to achieve weight management goals.

Perhaps, an increased understanding of the etiology of the different sources of fat may help guide the dieter to achieving a successful end result.

According to the National Heart Lung Blood Institute’s Obesity Education Initiative, body mass index (BMI) is a measure of body fat on height and weight in both adult men and women (NHLBI). It is important to note that these measures are suited for adults only and not applicable to children. The aim of BMI has always been to assess weight against respective height standards established by the Department of Health and Human Services (DHHS). Furthermore, clinical evidence suggests that a weight loss of 5-10% of initial weight will lower the risk of disease (DHHS). As a result, physicians and other health care providers utilize the results of this tool as a baseline to guide effective weight management. In addition, clinical guidelines also assess relative risk and weight circumference. Understanding these outputs, allows the health care provider to suggest a treatment plan to the dieter.

What is interesting about the process of weight management; there appears to be a scarcity of information on the differences between subcutaneous fat and visceral fat-and the tenuous relationship with the dieter’s goals. The aim of the article is to shed more light on both types of fat and perhaps, justify why it is important for the dieter to have a basic understanding of these two types of fat, as the dieter progresses on the path to weight loss.

Subcutaneous fat is found beneath the epidermis (outermost layer of skin) and is the protective wrap over the body’s surface. The body surface is made up of stratified squamous epithelium with an underlying basal lamina. Subcutaneous fat can be measured using body fat calipers, which provide a rough estimate of total body adiposity. There is much discussion on the effectiveness of body fat calipers. The tool is considered to be the most popular tool to assess body fat.

Adipose tissue is loose connective tissue. In humans, obesity does not depend on t body weight, but the amount of body fat-specifically adipose tissue (Kershaw, 2004). In this light, where is adipose tissue distributed the most? Are there distinctions between men and women and adipose accumulation? There are gender differences in adipose or fat distribution. The pear scenario in women is often contributed to adipose accumulation in women’s thighs and buttocks compared to men-where fat accumulation is prevalent in mid-section and chest. Interestingly enough, the lipoprotein lipase, is correlated with more women compared to men. This is primarily due an enzyme that is necessary for fat storage in women. Lipase does have a secondary role in men, but due to lack of enzyme that evades most men, the observation appears to more prevalent in women.

Consequently, there has been considerable debate over the role that subcutaneous fat plays in loosing weight and an individual’s overall appearance. Based on (Abe, T., Sugita, M & Fukunaga T, 1997; Hickey et al, 1997) a study examined the role of exercise (anaerobic and aerobic) in women: Study results revealed that the cohort that exercised 3-4 days a week compared with those who exercised just 1-2 days lost more subcutaneous fat in a 13 week exercise and diet regimen.

Visceral fat also known as organ fat is located inside the peritoneal cavity. Peritoneal cavity is the serous membrane that invests viscera. It is comprised of parietal and visceral peritoneum. In other words, visceral fat is located between the organs and contributes to belly fat. Compared with subcutaneous fat which is found beneath the epidermis. Visceral fat is composed of several adipose depots which may contribute insulin resistance, glucose intolerance, dyslipidemia, hypertension and coronary artery disease (NIH). Several studies have linked visceral fat to elevated triglycerides levels (Wirth et al, 1996). New methods are under review to appropriately measure visceral fat. One method that has gained traction is bioelectricity impedance method (Onda, T, 2006). Researchers in Japan believe that voltage which generated at the lateroabdominal area of the waste, will calculate visceral fat area more effectively. Clinical trials are still in progress, but researchers also hope that the device will address metabolic syndrome.

Considering that coronary artery disease is a condition that in which plaque builds up inside the coronary arteries and the plaque comprises fat, cholesterol and calcium that may lead atherosclerosis; visceral fat should get more attention. Furthermore, heart disease is the leading cause death in women 47.1% and 53% in men respectively (MMWR, 2008) with a cumulative cost at $500 billion (CDC) in 2005. These costs include health care expenditures, lost productivity, hospitalization costs for Medicare beneficiaries and health care spending attributed to high blood pressure. As a result, mortality and financial trends associated with heart disease seem to suggest that future efforts in conjunction with Healthy People 2010 and it leading health indicators; should increase r social marketing awareness of visceral fat and the associated effects in men and women. Which matters the most in the battle of the bulge? In my opinion, based on current health trends and leading health indicators in Healthy People 2010; the dieter’s arsenal should include a detailed action plan to address visceral fat.

References
Health Check Systems. [Online]. Understanding Your Body Fat Percentage. Retrieved from http://www.healthchecksystems.com/bodyfat.htm on March 27, 2008.

National Heart Lung and Blood Institute. [Online]. Obesity Education Initiative: Calculate Your Body Mass Index. Retrieved from http://www.nhlbisupport.com/bmi/ on March 31, 2008.

Medline Plus. [Online]. Weight Control. Retrieved from http://www.nlm.nih.gov/medlineplus/weightcontrol.html on March 31, 2008.

Kershaw EE, Flier JS (2004). “Adipose tissue as an endocrine organ”. J. Clin. Endocrinol. Metab. 89 (6): 2548-56. doi:10.1210/jc.2004-0395. PMID 15181022

Onda, T & Mitsuhiro, K. (2006). Visceral fat measuring instrument. Cell,
38, 6 238-240.

Qunikler, M et al. (2004). Androgen generation in adipose tissue in women in simple obesity-a site specific role for 17ß-hydroxysteroid dehydrogenase type 5. Journal of Endocrinology 183, 331-342.

Abe, T., Kawakami, Y., Sugita, M., & Fukunaga, T. (1997). Relationship between training frequency and subcutaneous and visceral fat in women. Medicine and Science in Sports and Exercise, 29, 1549-1553

Hickey MS, Houmard JA, Considine RV, et al. Gender-dependent effects of exercise training on serum leptin levels in humans. Am J Physiol. 1997;272(4 Pt 1):E562-566.

Wirth A, Steinmetz B. Gender differences in changes in subcutaneous and intra-abdominal fat during weight reduction: an ultrasound study. Obes Res. 1998;6(6):393-399.

Serdula et al., JAMA 1999 Oct 13;282(14):1353-8.
MMWR. (2008). American Heart Month—February 2008. Retrieved from http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5704a1.htm on March 31, 2008.

CDC. [Online]. Preventing Heart Disease and Stroke. Retrieved from http://www.cdc.gov/nccdphp/publications/factsheets/Prevention/cvh.htm on March 31, 2008.

Healthy People 2010. [Online]. Retrieved from http://www.healthypeople.gov/LHI/lhiwhat.htm on March 31, 2008.


9 Responses to Subcutaneous vs. visceral fat: Which matters most when battling the bulge?

  1. Kala October 14, 2013 at 9:44 am #

    I do agree with alll of the ideazs you’ve offered for your post.
    They’re really convincing andd will definjtely work.
    Nonetheless, the posts are too quick for novices.

    Could you please extend them a bbit from next time?

    Thanks for the post.

  2. 2013 at 7:30 PM April 23, 2013 at 8:42 am #

    You can definitely see your skills in the article you write.
    The world hopes for more passionate writers such as you who
    are not afraid to mention how they believe. All the time go after your heart.

  3. April December 21, 2012 at 9:30 am #

    Wow, this writing is awful. And so is your command of the English language. Oh, and your proofing and spelling too.

  4. Anonymous December 21, 2012 at 9:29 am #

    Wow, this writing is awful. And so is your command of the English language. Oh, and your proofing and spelling too.

  5. Marko October 1, 2012 at 7:06 pm #

    way to copy and paste from wikipedia. and great spelling.
    garbage writing.

  6. Charles Owen September 10, 2012 at 2:18 pm #

    This article says nothing new. Someone had to write and article and filled the space with old ideas that are of no help to someone wishing to rid himself of visceral fat. It is a waste of time and space.

  7. Anonymous September 28, 2009 at 10:53 am #

    So what I read is: there are two types of fat and one is particularly bad, and its hard/expensive to measure visceral fat.

    Some obvious questions:
    1) How does body choose to store as visceral vs. subcutaneous? Does excess diet glucose vs. excess triglycerides make a difference?
    2) How does body decide which fat to release energy from? Does it matter what the actual energy demand is?
    3) What do we know about visceral fat? very hard to Google anything too interesting.

  8. Anonymous September 14, 2009 at 7:16 pm #

    Hi, I wanted to reply to your post. I am currently conducting a clinical study on a new product – which is not classified as a weight loss product. I won’t mention the name of the product because I do not want anyone to confuse this with a sales pitch. The product is not on the market yet… you will start to see it on the market this fall. With 40 international patents for reduction in visceral fat this is one of the most important products I have worked on during my 15 year career in pharmaceutical and nutraceutical products. Previous clinical studies on this product performed showed a 20% reduction in visceral fat when combined with diet and exercise – a 9.5% reduction with no restrictions on diet and exercise. We have 20 test subjects who are participating in the study and in order to measure the reduction in visceral fat we are conducting abdominal MRI scans. Visceral fat can only be measured by MRI or CT scans of the abdomen. Visceral fat is the most dangerous fat, it is fat responsible for Type II diabetes, coronary heart disease, high cholesterol, liver dysfunction, and many other serious medical problems. Although it is not discussed much in the weight loss category – it is the most important concern we should have as the global obesity crisis continues to grow.

  9. Anonymous July 20, 2009 at 8:04 pm #

    It’s true that these 2 fats are not discussed much in the weight loss community. As you state in the article, reducing visceral fat should be the main concern for dieters. I would like to test my visceral fat percentage but I haven’t really looked into it yet. For now I just try to watch what I eat and exercise 4 days a week.

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