Home
>
Weight Loss
>
Dietary Recommendations After Gastric Bypass Surgery

Dietary Recommendations After Gastric Bypass Surgery

When obesity gets out of hand, unresponsive to dietary, lifestyle and medical interventions, drastic measures are needed to cut down calorie intake. Morbid obesity with a BMI (body mass index, a measure of malnutrition) above 40 kg/m2 is an indication for surgical procedures such as gastric bypass surgery. Gastric bypass is now a well-trodden path to lower BMI's and achieve healthier lives in 18 months or so. First used in the 1950's, only the last two decades have seen safe and successful gastric bypass surgery with any consistency. Half a century of meticulous observations and patient follow-up has led to the formulation of strict guidelines to ensure desired results.

Gastric bypass is a series of steps initiated starting with the decision to undergo the procedure. Identifying existing nutritional deficiencies is the first step towards surgery. Vitamin and mineral deficiency often occur in obesity, and need to be addressed before the procedure. The surgery itself has two goals; to reduce the volume of the stomach and shorten the food transit time in the intestine. After surgery the stomach cannot receive large meals or participate in digestion. This by itself limits food intake. Food also bypasses a large part of the intestine and has little time to interact with liver and pancreatic enzymes. As a result, nutrition absorbed from diet drops drastically. In most types of gastric bypass surgeries done today only 50 cm of the intestine is allowed to function in normal fashion. Compare this to food absorption taking over 7 feet of small and large intestine before surgery.

With such a radical reduction in the capacity to assimilate food, the postoperative period can be rather tricky. Only clear fluids are advised for the first two days while waiting for gut to recover. The gut is then re-trained for about two months before it can go back to a normal diet. During the recovery period the limitations imposed by the gastric bypass procedure should be kept in mind. After surgery the stomach has become much smaller and can only hold approximately eight ounces at a time. The stomach has also lost its ability to pulverize food to initiate digestion. Consequently the appropriate diet for postoperative recovery would be a liquid to soft solid diet that can be taken six to eight times a day in small quantities. Nutrient fluids are preferable since they can provide hydration and energy at the same time. Non-nutrient fluids are best avoided or at least restricted to in-between meals.

The type of nutrient chosen also deserves due consideration. The chosen macronutrient should not affect the stomach emptying time while providing enough energy to recover from the surgery. In this regard carbohydrates and fats are at either end of a spectrum and neither is suitable. Carbohydrates pass through very quickly and produce very uncomfortable symptoms like vomiting, bloating, diarrhea and sweating. Fat slows the gut considerably, and it is oftentimes ruled out because of its direct link to obesity. Research suggests that the macronutrients of choice after gastric bypass surgery are proteins. Proteins do not change gastric transit time significantly. A high-protein diet can also provide enough amino acids for repair and growth after a major surgical procedure like gastric bypass.

Apart from these advantages, a high-protein diet has a special role in the treatment of obesity. Gastric bypass restricts excessive calorie intake to prevent weight gain. However, accumulated adipose tissue also needs to be expended to achieve the desired weight loss. The basal metabolic rate (energy expenditure) should be increased simultaneously to burn stored fat and reduce BMI. This can be achieved by a high-protein diet since proteins in diet increase the basal metabolic rate by stimulating protein synthesis. Observations made during the postoperative period also confirm this proposition. Unless a high-protein diet is provided, weight loss often ceases despite controlled consumption.

Currently, a protein intake of up to 90 grams per day is recommended in the post-operative period. Given the trauma and the limitations the gut is subjected to during the procedure, such a high protein intake can be difficult to maintain. The gut is hardly ready and often fails to assimilate proteins and energy from traditional foods and diets. Therefore, a sugar-free fluid protein concentrate with a high bioavailability, adequate essential amino acids, vitamins and minerals is the most appropriate diet in the post-operative period. Digestion is further facilitated if the protein concentrate is already pre-digested, or hydrolyzed. Such a nutrient fluid can simultaneously supply concentrated energy and hydration even when taken in small quantities.

After recovery and return to a normal diet divided over 3 to 4 meals per day, a high-protein concentrate is still a relevant supplement between or during meals. The protein supplement continues to provide thermogenic action necessary to lose weight essential to sustain weight loss. It also compensates for any amino acid deficiency in the diet and maintains nutrition on bad days not uncommon in the months and years after a major surgery.

ABOUT PROTICA

Founded in 2001, Protica, Inc. is a nutritional research firm with offices in Lafayette Hill and Conshohocken, Pennsylvania. Protica manufactures capsulized foods, including Profect, a compact, hypoallergenic, ready-to-drink protein beverage containing zero carbohydrates and zero fat. Information on Protica is available at http://www.protica.com

You can also learn about Profect at http://www.profect.com

REFERENCES

1. Kellum JM, DeMaria EJ, Sugarman HJ. The surgical treatment of morbid obesity. Curr Prob Surg. 1998;35:791-858.

2. MacLean LD, Rhode BM, Nohr CW. Late outcome of isolated gastric bypass. Ann of Surg. 2000. 231:524-528.

3. Nutritional Implications of Bariatric Surgery: Perspectives of Practitioners Audiotape/Handout packages available post-conference.

4. Weight management-Position of ADA. J Am Diet Assoc. 2002;102:1145-1155

5. Faintuch J, Matsuda M, Cruz ME, et al. Severe protein-calorie malnutrition after bariatric procedures. Obes Surg 2004; 14:175?181.

6. Alvarez-Leite J.I. Nutrient deficiencies secondary to bariatric surgery. Curr Opin Clin Nutr Metab Care 7:569?575.

Elk Grove (east OF 53) car service from Midway .. Lockport Chicago limo O’Hare

In The News:

Woven City is Toyota's experimental city that is a fully functional environment for people to live, work and play while doing research.

The line between spam and scams is thin. Kurt "CyberGuy" Knutsson details his tips for identifying and avoiding phone scams, robocalls and unwanted solicitations.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents

Kurt the CyberGuy takes you through the steps to easily set your preferred web browser whether you're using a Mac, Windows PC, iPhone or Android.

Google, Instagram, Facebook and weather apps can track your location and use that data to serve you ads; here's what you can do to protect your privacy.

A new debate has emerged about whether airlines should charge passengers based on their weight to help reduce fuel consumption and lower emissions.

Tech expert Kurt “CyberGuy" Knutsson says Hipshipper, which is used by eBay, Shopify and Amazon sellers, exposed millions of shipping labels.

Boxabl’s Baby Box is a 120-square-foot foldable home that can be set up in 60 minutes and has off-grid features. Kurt “CyberGuy" Knutsson says it's designed to maximize functionality.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Major IoT data breach: Mars Hydro database with 2.7 billion records exposed. Kurt “CyberGuy" Knutsson says the breach is a reminder of the risks that come with using IoT devices.

Unitree H1 robots dance at gala, blending AI and tradition. Tech expert Kurt “CyberGuy" Knutsson examines the convergence of cutting-edge technology and traditional culture.

For the first time ever, SpaceX launched a rocket into space from Florida and landed the booster the Bahamas, allowing for future polar-orbit spaceflight missions.

Attackers use caller ID spoofing and AI voices to steal money. Tech expert Kurt “CyberGuy" Knutsson provides seven ways to protect yourself.

Tech expert Kurt “CyberGuy" Knutsson talks about the Genesis GV60 MIV, an electric rescue EV with snow tracks for extreme missions.

Tech expert Kurt “CyberGuy" Knutsson helps you ensure a smooth online experience with a reliable, secure home network setup.

Kurt “CyberGuy" Knutsson talks about Vollebak’s Shielding Suit, which blocks EM radiation, infrared and tracking for privacy.

Even Apple products are vulnerable to cybercriminals, and a new report suggests the owners of Mac products will have to be more vigilant this year.

An inflatable six-person tiny house from a firm called 2001 looks like a space station with its inflatable dome that is transportable and eco-friendly.

Scams cost Americans an estimated $159 billion every year and average about $3,500 in losses per victim. The CyberGuy has advice to protect yourself.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents

Zeekr and Waymo are joining forces for the world's first mass-produced autonomous vehicle, combining an electric vehicle with self-driving technology.

A humanoid robot training center has opened in Shanghai, a big step in China's efforts to become a global leader in robotics and artificial intelligence.

Security experts have discovered that hackers are targeting apps on the App Store to spread malware that steals information from saved screenshots.

A new luxury SUV combines military-inspired design and high-end luxury transportation and includes two military-grade gas masks to protect against chemical warfare.

80% of stalking victims are tracked using tech. GPS trackers, like AirTags, are among the most popular ways to do it. Here's how to protect yourself.

Dietary Recommendations After Gastric Bypass Surgery

Weight Loss