
Sermorelin is a peptide therapy that stimulates your body’s natural production of human growth hormone (HGH). For individuals struggling with stubborn belly fat, this treatment has gained attention as a potential solution that works by optimizing metabolism, improving insulin sensitivity, and supporting lean muscle development.
While Sermorelin is not a direct fat-burning treatment, its ability to boost HGH levels can influence several factors tied to weight management. Growth hormone plays a key role in how your body stores and burns fat, particularly visceral fat around the midsection. As HGH levels decline with age, many adults notice increased belly fat, reduced energy, and slower recovery from physical activity.
This article covers how Sermorelin may help with belly fat reduction, the potential benefits of this therapy, who makes a good candidate, possible side effects, and what to expect during treatment. If you are considering peptide therapy as part of your weight loss strategy, this guide provides the information you need to make an informed decision.
Sermorelin’s role in promoting HGH production has generated significant interest regarding its potential for targeting stubborn belly fat.
While it is not a magic solution for weight loss, its potential effects on the body can contribute to a reduction of visceral fat. Here is how Sermorelin may help burn belly fat and the factors influencing its effectiveness.
Visceral fat, which is the fat surrounding internal organs, has been linked to various health risks, such as type 2 diabetes and cardiovascular disease. According to Harvard Health, addressing this type of fat requires a multifaceted approach. Sermorelin’s impact on metabolism and insulin sensitivity can contribute to reducing visceral fat, which can show significant changes to the composition of the belly area. Many patients who pursue body contouring also consider peptide therapy as part of their overall strategy.
Sermorelin can help maintain hormonal balance by increasing the production of HGH. Since hormonal imbalances can contribute to weight gain and difficulty losing weight, especially around the abdomen, this treatment may be able to help, albeit indirectly. Research published in the National Library of Medicine supports the connection between growth hormone levels and body composition.
Although there is limited evidence to support the direct improvement of athletic performance, some users of Sermorelin report increased energy and stamina. Improved performance can translate into a greater number of calories burned. Patients interested in optimizing their physique often combine peptide therapy with procedures like high definition liposuction for more dramatic results.
It is essential to note that Sermorelin’s effectiveness in burning belly fat may vary from person to person. Factors such as age, lifestyle, diet, and exercise habits can all influence the results. The National Heart, Lung, and Blood Institute provides helpful guidelines on maintaining a healthy weight through lifestyle modifications.
Sermorelin is a synthetic hormone that triggers the body’s natural production of human growth hormone (HGH). This hormone plays a significant role in numerous metabolic processes, including tissue repair, muscle development, brain function, energy production, and metabolism. As we age, HGH levels naturally decrease, which can lead some individuals to experience weight gain and reduced muscle mass.
Boosting HGH levels through Sermorelin could support weight loss efforts. While Sermorelin isn’t a direct weight loss treatment, its ability to elevate HGH levels can positively influence several factors that affect weight management.
This treatment may enhance energy levels, mood, and overall quality of life for those who use it. These improvements can help increase motivation for activities like regular physical exercise and maintaining a healthy weight. Both are essential components of any weight loss plan, and many patients at Formation report feeling more motivated to stay active after starting therapy.
Sermorelin may help increase lean body mass. The resulting boost in metabolism can make it easier for individuals to burn calories and lose weight. This can be transformative, especially for those who struggle with obesity or have difficulty losing weight through diet and exercise alone. It works by helping people achieve a caloric deficit more easily. Johns Hopkins Medicine notes that maintaining lean muscle mass is crucial for long-term metabolic health.
Sermorelin has been shown to help improve insulin sensitivity. This can lead to better blood sugar control and reduce the risk of type 2 diabetes. Since insulin resistance can make it more challenging for individuals to shed excess pounds, Sermorelin can be a valuable ally. Patients pursuing liposuction often benefit from improved metabolic function as well.
Some research indicates this treatment may improve sexual function and libido. This can produce an indirect benefit of increased self-confidence and a more positive outlook on life. Studies from Psychology Today highlight the connection between physical well-being and mental health, which can help improve weight loss success.
Sermorelin may improve sleep quality, helping individuals feel more rested and refreshed. Adequate sleep is crucial for weight loss since it gives the body time to repair and regenerate. Patients who combine peptide therapy with men’s aesthetic surgery often report better overall recovery outcomes.
While Sermorelin contains properties that can support weight loss, it’s not a miracle solution. Addressing the root cause of weight issues through a combination of proper diet, exercise, and other elements like Sermorelin therapy is the key to successful weight loss.
It is essential to consult a medical professional before starting any new form of treatment, including Sermorelin. This ensures it is the right choice for your needs and circumstances. At Formation in Tampa, Dr. Gopal Grandhige, a board-certified general surgeon specializing in aesthetic surgery, can help determine whether peptide therapy aligns with your health goals.
Sermorelin is a growth hormone-releasing hormone (GHRH) analog that signals the pituitary gland to produce and release more growth hormone naturally. Unlike synthetic HGH injections that introduce external hormones directly into the body, Sermorelin encourages your body to do the work itself. This approach helps maintain a more natural hormonal rhythm and reduces the risk of overloading your system with excess growth hormone.
Once administered, Sermorelin binds to specific receptors in the pituitary gland. This triggers a cascade of signals that result in increased GH secretion. Over time, patients may notice gradual improvements in energy, body composition, and recovery. Those interested in complementary treatments may also consider injectables or PDO thread lifts to address other aesthetic concerns.
Sermorelin therapy may be suitable for adults experiencing symptoms associated with declining growth hormone levels. Common signs include persistent fatigue, difficulty losing weight despite diet and exercise, reduced muscle tone, slower recovery from physical activity, and decreased mental clarity.
Ideal candidates are typically adults over 30 who are in generally good health but feel they are not performing at their best. However, this treatment is not appropriate for everyone. Individuals with certain medical conditions, active cancers, or those who are pregnant or breastfeeding should avoid this therapy. A thorough consultation with a qualified medical professional is necessary to determine if Sermorelin is right for you. The FDA provides resources on patient safety for various medical and aesthetic treatments.
Sermorelin is generally well-tolerated, but some patients may experience mild side effects. These can include redness or irritation at the injection site, headaches, flushing, or dizziness. These symptoms are typically temporary and subside as the body adjusts to the treatment.
Serious side effects are rare but can occur. If you experience unusual swelling, difficulty breathing, or severe reactions, seek medical attention immediately. Working with an experienced provider like Dr. Gopal Grandhige at Formation in Tampa ensures proper monitoring throughout your treatment journey. The American Society of Plastic Surgeons offers additional guidance on patient safety protocols.
Sermorelin works best when paired with a balanced lifestyle. Regular physical activity, particularly strength training and cardiovascular exercise, can amplify the benefits of increased growth hormone. A nutrient-rich diet that includes adequate protein, healthy fats, and minimal processed foods supports muscle development and fat metabolism. The Cleveland Clinic notes that lifestyle factors play a significant role in any body composition treatment.
Sleep is another critical factor. Since growth hormone is primarily released during deep sleep, prioritizing seven to nine hours of quality rest each night can enhance the effects of Sermorelin therapy. Stress management techniques like meditation or mindfulness practices can also support hormonal balance and overall well-being. Patients who have undergone tummy tuck surgery often incorporate similar lifestyle changes to maintain their results. Some also add Botox treatments to address fine lines and complement their rejuvenation goals.
Sermorelin is a peptide that works by stimulating your body’s natural production and release of growth hormone (GH). This process can support better physical performance, increased vitality, and improved body composition over time.
When growth hormone levels are optimized, you may notice a range of benefits. These include gains in lean muscle mass, reduction in stubborn body fat, and quicker recovery after workouts or physical activity. Many patients also report stronger immune function, better bone density, and a noticeable boost in overall energy levels. For those looking to refine facial features, treatments like FaceTite or non-invasive neck and jawline contouring can complement the body improvements achieved through peptide therapy.
At Formation in Tampa, Dr. Gopal Grandhige offers personalized treatment plans to help you reach your health and performance goals. As a board-certified general surgeon who specializes in aesthetic surgery, Dr. Grandhige understands how optimizing your body’s natural processes can make a real difference in how you look and feel. You can view before and after results from previous patients or learn more about plastic surgeon Dr. Ahmad Saad, who also practices at the clinic.
Sermorelin offers a promising option for individuals looking to address stubborn belly fat and improve their overall body composition. By stimulating your body’s natural production of growth hormone, this peptide therapy can support fat reduction, increased lean muscle mass, and enhanced metabolic function.
However, it is important to remember that Sermorelin is not a standalone solution. The best results come from combining this therapy with a healthy lifestyle that includes regular exercise, a balanced diet, quality sleep, and effective stress management. These factors work together to maximize the benefits of increased growth hormone levels.
If you are struggling with weight loss despite your best efforts, or if you are experiencing symptoms of declining growth hormone levels, Sermorelin therapy may be worth considering. A consultation with a qualified medical professional can help you determine whether this treatment aligns with your individual health goals and circumstances.
At Formation in Tampa, Dr. Gopal Grandhige provides personalized peptide therapy programs designed to help patients achieve lasting results. As a board-certified general surgeon specializing in aesthetic surgery, Dr. Grandhige takes a comprehensive approach to helping you look and feel your best. Contact us today to schedule your consultation.
Most patients begin noticing improvements in energy and sleep within two to four weeks. Changes in body composition and fat reduction typically become visible after two to three months of consistent treatment.
Yes, Sermorelin is generally considered safe when administered under medical supervision. Side effects are usually mild and temporary, such as redness at the injection site or headaches.
Sermorelin is typically given through subcutaneous injections, often administered before bedtime to align with the body's natural growth hormone release cycle.
No. Sermorelin works best as a complement to a healthy lifestyle. Regular physical activity and proper nutrition are essential for achieving optimal results.
Individuals with active cancers, certain medical conditions, or those who are pregnant or breastfeeding should not use Sermorelin. A medical consultation is necessary before starting treatment.
“Glad I took my time researching.”
That line matters.
Choosing to have plastic surgery isn’t just about deciding you want a change. It’s about deciding who you trust to understand the result you’re looking for, especially when the goal isn’t simply removing fat, but creating a shape that still looks natural to you.
For our lovely patient, that meant a tighter stomach and waist, feeling more comfortable in fitted clothing, and most importantly, getting the result she wanted “without looking fake.”
That’s the goal of thoughtful body contouring: not to make you look like someone else, but to create a result that works with your body and your goals.
Dr. Gopal Grandhige specializes in liposuction and body contouring in Tampa, creating treatment plans around each patient’s anatomy, proportions, and goals.
Considering liposuction? DM us or Schedule a consultation at Formation to learn what approach may be right for you (link in bio).
“Glad I took my time researching.”
That line matters.
Choosing to have plastic surgery isn’t just about deciding you want a change. It’s about deciding who you trust to understand the result you’re looking for, especially when the goal isn’t simply removing fat, but creating a shape that still looks natural to you.
For our lovely patient, that meant a tighter stomach and waist, feeling more comfortable in fitted clothing, and most importantly, getting the result she wanted “without looking fake.”
That’s the goal of thoughtful body contouring: not to make you look like someone else, but to create a result that works with your body and your goals.
Dr. Gopal Grandhige specializes in liposuction and body contouring in Tampa, creating treatment plans around each patient’s anatomy, proportions, and goals.
Considering liposuction? DM us or Schedule a consultation at Formation to learn what approach may be right for you (link in bio).
More definition doesn’t automatically mean a better liposuction result.
The goal of body contouring is to create definition that makes sense for your anatomy, not to create the most sculpted abdomen possible simply because we can.
Low-, medium-, and high-definition liposuction can create very different looks, from subtle contouring to a more athletic or highly sculpted appearance.
The right level depends on your existing muscle definition, proportions, surrounding areas of the body, and the result you want to achieve.
For Dr. Gopal Grandhige, a board-certified surgeon specializing in body contouring and high-definition liposuction in Tampa, the goal is balance: the abdomen, chest, back, arms and shoulders should look like they belong to the same body.
The result should feel cohesive, proportional, and natural to your anatomy.
Considering liposuction? DM us or schedule a consultation at Formation to discuss the level of definition that makes sense for your body and your goals (link in bio).
More definition doesn’t automatically mean a better liposuction result.
The goal of body contouring is to create definition that makes sense for your anatomy, not to create the most sculpted abdomen possible simply because we can.
Low-, medium-, and high-definition liposuction can create very different looks, from subtle contouring to a more athletic or highly sculpted appearance.
The right level depends on your existing muscle definition, proportions, surrounding areas of the body, and the result you want to achieve.
For Dr. Gopal Grandhige, a board-certified surgeon specializing in body contouring and high-definition liposuction in Tampa, the goal is balance: the abdomen, chest, back, arms and shoulders should look like they belong to the same body.
The result should feel cohesive, proportional, and natural to your anatomy.
Considering liposuction? DM us or schedule a consultation at Formation to discuss the level of definition that makes sense for your body and your goals (link in bio).
One of the biggest misconceptions about liposuction? That the fat either “comes back” or simply moves somewhere else.
Liposuction permanently removes fat cells from the treated area. But it doesn’t remove every fat cell, and the cells that remain can still grow larger with weight gain.
That’s why long-term results aren’t just about what happens during the procedure. Maintaining a relatively stable weight helps preserve the contour created through liposuction.
Dr. Gopal Grandhige specializes in advanced high definition liposuction and body contouring, with an emphasis on creating results that complement each patient’s natural anatomy.
If you’re considering liposuction in Tampa, schedule a consultation at Formation to learn what approach makes sense for your body and goals (Link in bio).
One of the biggest misconceptions about liposuction? That the fat either “comes back” or simply moves somewhere else.
Liposuction permanently removes fat cells from the treated area. But it doesn’t remove every fat cell, and the cells that remain can still grow larger with weight gain.
That’s why long-term results aren’t just about what happens during the procedure. Maintaining a relatively stable weight helps preserve the contour created through liposuction.
Dr. Gopal Grandhige specializes in advanced high definition liposuction and body contouring, with an emphasis on creating results that complement each patient’s natural anatomy.
If you’re considering liposuction in Tampa, schedule a consultation at Formation to learn what approach makes sense for your body and goals (Link in bio).
6 months post HD liposuction with moderate definition.
The goal was a leaner, more athletic contour with visible definition through the abdomen and torso, without pushing the result to the highest level of definition.
HD liposuction can be customized based on anatomy, muscle structure, and the degree of definition someone wants to achieve.
For this patient, moderate definition created the balance Dr. Gopal was looking for.
Considering HD liposuction?
Schedule a consultation with Dr. Gopal Grandhige at Formation Tampa (link in bio).
6 months post HD liposuction with moderate definition.
The goal was a leaner, more athletic contour with visible definition through the abdomen and torso, without pushing the result to the highest level of definition.
HD liposuction can be customized based on anatomy, muscle structure, and the degree of definition someone wants to achieve.
For this patient, moderate definition created the balance Dr. Gopal was looking for.
Considering HD liposuction?
Schedule a consultation with Dr. Gopal Grandhige at Formation Tampa (link in bio).
These lipo terms aren’t interchangeable.
Traditional liposuction, Lipo 360, and high-definition liposuction can all address unwanted fat, but the approach depends on what you’re actually trying to change.
Maybe it’s one stubborn area that hasn’t responded to diet and exercise.
Maybe the goal is creating better proportion throughout the entire midsection.
Or maybe you’re already lean and looking for more visible, athletic definition.
Those are different goals, and they call for different treatment plans.
Dr. Gopal Grandhige is a board-certified surgeon specializing in body contouring and high-definition liposuction in Tampa.
Each treatment plan starts with your anatomy, your current body composition, and the result you want to achieve.
Considering liposuction? DM us or schedule a consultation at Formation to discuss your goals and determine which approach makes the most sense for you.
These lipo terms aren’t interchangeable.
Traditional liposuction, Lipo 360, and high-definition liposuction can all address unwanted fat, but the approach depends on what you’re actually trying to change.
Maybe it’s one stubborn area that hasn’t responded to diet and exercise.
Maybe the goal is creating better proportion throughout the entire midsection.
Or maybe you’re already lean and looking for more visible, athletic definition.
Those are different goals, and they call for different treatment plans.
Dr. Gopal Grandhige is a board-certified surgeon specializing in body contouring and high-definition liposuction in Tampa.
Each treatment plan starts with your anatomy, your current body composition, and the result you want to achieve.
Considering liposuction? DM us or schedule a consultation at Formation to discuss your goals and determine which approach makes the most sense for you.
Everyone’s anatomy and aesthetic goals are unique—which is why a personalized assessment is key.
Ready to see if Renuvion is the right fit for your transformation?
DM us or give us a call at (813) 922-2920 to schedule your consultation.
#renuvion #jplasma #skintightening #skingoals
Everyone’s anatomy and aesthetic goals are unique—which is why a personalized assessment is key.
Ready to see if Renuvion is the right fit for your transformation?
DM us or give us a call at (813) 922-2920 to schedule your consultation.
#renuvion #jplasma #skintightening #skingoals
Tampa, we have a secret… and ELLE Magazine just confirmed it. 😉✨
Say hello to Picofy by InMode—officially named the Best Glass Skin Laser by ELLE! And the best part? We are the ONLY clinic in Tampa that has it.
If you’ve been dreaming of that effortless, glowing glass skin with zero downtime, this is your sign.
Why we’re obsessed with Picofy:
🌟 Painless treatments (yes, really!)
🌟 Safe & effective for ALL skin tones
🌟 Ultimate skin rejuvenation, pigment reduction, and glow
Ready to upgrade your skincare routine?
Drop a 🪞 in the comments or head to the link in our bio to book your consultation!
You can also stop by for our open house this Thursday, July 30 to check it out in person!!✨🥂
Tampa, we have a secret… and ELLE Magazine just confirmed it. 😉✨
Say hello to Picofy by InMode—officially named the Best Glass Skin Laser by ELLE! And the best part? We are the ONLY clinic in Tampa that has it.
If you’ve been dreaming of that effortless, glowing glass skin with zero downtime, this is your sign.
Why we’re obsessed with Picofy:
🌟 Painless treatments (yes, really!)
🌟 Safe & effective for ALL skin tones
🌟 Ultimate skin rejuvenation, pigment reduction, and glow
Ready to upgrade your skincare routine?
Drop a 🪞 in the comments or head to the link in our bio to book your consultation!
You can also stop by for our open house this Thursday, July 30 to check it out in person!!✨🥂
“I just want to look like me, but fitter.” — Mission accomplished. 🙌
Here is an incredible 3-month update for our patient following a circumferential body lift with liposculpting.
By addressing excess skin 360 degrees around the beltline while strategically sculpting the chest, shoulders, and abdomen, we achieved a smooth, athletic frame without sacrificing a natural appearance. He looks leaner, stronger, and completely redefined.
Ready to start your journey? DM us or click the link in our bio to book your consultation.
#tampa #360lift #plasticsurgeryclinic
“I just want to look like me, but fitter.” — Mission accomplished. 🙌
Here is an incredible 3-month update for our patient following a circumferential body lift with liposculpting.
By addressing excess skin 360 degrees around the beltline while strategically sculpting the chest, shoulders, and abdomen, we achieved a smooth, athletic frame without sacrificing a natural appearance. He looks leaner, stronger, and completely redefined.
Ready to start your journey? DM us or click the link in our bio to book your consultation.
#tampa #360lift #plasticsurgeryclinic
RSVP (link in bio) and get a raffle entry.
‼️get another raffle ticket for every three friends you tag. Unlimited entries. You can essentially guarantee a prize !
We’re going ALL OUT for our July 30th Party, and our raffle lineup this year is unmatched. 🥳
Every ticket you get puts you in the running for some serious glow-ups and top-tier treatments!
Take a look at what you could win:
1️⃣ 3-Pack Picofy Laser Facials✨($3,375 value)
2️⃣ COMPLETE Tattoo Removal — Unlimited sessions until it’s gone! 🚫🎨 ($4,340 value)
3️⃣ 100 Units of Botox 💉 ($1,500 value)
4️⃣ Full Syringe of Filler ( @juvederm ) 💋 ($900 value)
5️⃣ $500 Gift Card toward Peptides 🧬
6️⃣ FULL Permanent Makeup Brow Set (Nano/Powder/Combo)👁️✨ ($1,000 value) @bladingbybrent
7️⃣ Epicutis Gift Bag packed with luxury skincare 🛍️
*Exclusive Event-Only Discounts just for showing up!* 💸
Which prize are you claiming? Drop the number in the comments below! 👇💬
📅 When: July 30th
📍 Where: Formation (1315 S Howard Ave, Tampa)
⏰ Time: 5:30pm
Tag your party bestie who needs to enter with you! 👯♀️👇
Edited · 2d
RSVP (link in bio) and get a raffle entry.
‼️get another raffle ticket for every three friends you tag. Unlimited entries. You can essentially guarantee a prize !
We’re going ALL OUT for our July 30th Party, and our raffle lineup this year is unmatched. 🥳
Every ticket you get puts you in the running for some serious glow-ups and top-tier treatments!
Take a look at what you could win:
1️⃣ 3-Pack Picofy Laser Facials✨($3,375 value)
2️⃣ COMPLETE Tattoo Removal — Unlimited sessions until it’s gone! 🚫🎨 ($4,340 value)
3️⃣ 100 Units of Botox 💉 ($1,500 value)
4️⃣ Full Syringe of Filler ( @juvederm ) 💋 ($900 value)
5️⃣ $500 Gift Card toward Peptides 🧬
6️⃣ FULL Permanent Makeup Brow Set (Nano/Powder/Combo)👁️✨ ($1,000 value) @bladingbybrent
7️⃣ Epicutis Gift Bag packed with luxury skincare 🛍️
*Exclusive Event-Only Discounts just for showing up!* 💸
Which prize are you claiming? Drop the number in the comments below! 👇💬
📅 When: July 30th
📍 Where: Formation (1315 S Howard Ave, Tampa)
⏰ Time: 5:30pm
Tag your party bestie who needs to enter with you! 👯♀️👇
Edited · 2d
1 Month Post-Op Transformation! 💥
Fixing previous surgical outcomes requires precision, expertise, and a tailored approach.
Here’s how Dr. Grandhige transformed this patient’s core and chest:
The Challenge:
Previous tummy tuck left uneven abdominal fat distribution
High scar placement creating a visible “shelf” effect
The Solution:
HD Liposculpture to refine and sculpt a athletic, masculine core and chest
Scar Revision to eliminate the shelf-like appearance and create a smoother profile
Keep in mind, at just 1 month post-op, swelling is still settling and we are nowhere near final results! Can’t wait to see this shape mature over the next few months. 🔥
💬 Questions about revision procedures? Drop them in the comments or send us a DM!
1 Month Post-Op Transformation! 💥
Fixing previous surgical outcomes requires precision, expertise, and a tailored approach.
Here’s how Dr. Grandhige transformed this patient’s core and chest:
The Challenge:
Previous tummy tuck left uneven abdominal fat distribution
High scar placement creating a visible “shelf” effect
The Solution:
HD Liposculpture to refine and sculpt a athletic, masculine core and chest
Scar Revision to eliminate the shelf-like appearance and create a smoother profile
Keep in mind, at just 1 month post-op, swelling is still settling and we are nowhere near final results! Can’t wait to see this shape mature over the next few months. 🔥
💬 Questions about revision procedures? Drop them in the comments or send us a DM!
References:
Merriam, G. R., Buchner, D. M., Engel, B. T., & Vitiello, M. V. (2013). Growth hormone-releasing hormone effects on brain γ-aminobutyric acid levels in mild cognitive impairment and healthy aging. JAMA Neurology, 70(7), 883–890. https://pmc.ncbi.nlm.nih.gov/articles/PMC3764915/
Prakash, A., & Goa, K. L. (1999). Sermorelin: A review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency. BioDrugs, 12(2), 139–157. https://pubmed.ncbi.nlm.nih.gov/18031173/
Ross, R. J., Rodda, C., Tsagarakis, S., Davies, P. S., Grossman, A., Rees, L. H., Preece, M. A., Savage, M. O., & Besser, G. M. (1987). Treatment of growth-hormone deficiency with growth-hormone-releasing hormone. The Lancet, 329(8523), 5–8. https://pubmed.ncbi.nlm.nih.gov/2879138/
Sinha, D. K., Balasubramanian, A., Tatem, A. J., Rivera-Mirabal, J., Yu, J., Jed, J., Pastuszak, A. W., & Lipshultz, L. I. (2020). Beyond the androgen receptor: The role of growth hormone secretagogues in the modern management of body composition in hypogonadal males. Translational Andrology and Urology, 9(Suppl 2), S149–S159. https://pmc.ncbi.nlm.nih.gov/articles/PMC7108996/
Walker, R. F. (2006). Sermorelin: A better approach to management of adult-onset growth hormone insufficiency? Clinical Interventions in Aging, 1(4), 307–308. https://pmc.ncbi.nlm.nih.gov/articles/PMC2699646/