Specific Carbohydrate Diet

The SCD is a whole food diet favoring monosaccharides which are easier to absorb and excludes food additives & complex carbohydrates.

Cooked beef with vegetables
Woman cutting vegetables.

About the Specific Carbohydrate Diet


The SCD was originally developed by Sydney V. Haas, MD, in 1924 for the treatment of celiac disease and was popularized and refined by Elaine Gottschall for the treatment of IBD in her book, Breaking the Vicious Cycle, first published in 1986.
The specific carbohydrate diet has the following principles:

  1. Carbohydrates: The SCD emphasizes simple carbohydrates that are easily absorbed, including certain fruits, honey, and specific vegetables. It restricts the consumption of complex carbohydrates such as grains, cereals, certain starchy vegetables, and most sugars.
  2. Protein and Fat Emphasis: The diet encourages the consumption of lean meats, poultry, fish, eggs, and non-processed fats like olive oil, avocados, and nuts.
  3. Probiotic Foods: Fermented foods are encouraged, as they contain beneficial probiotics that can help support gut health, especially home-made yogurt with specific strains of bacteria.
  4. Fiber-Rich Foods: Fiber-rich foods like vegetables and fruits are permitted, but only those low in complex carbohydrates.
  5. Nutrient-Dense Foods: The diet emphasizes nutrient-dense, whole foods, avoiding processed and artificial ingredients.

The effects of the SCD in pediatric Crohn’s disease were first published in the medical literature in 20141, with subsequent reports in children and adults with Crohn’s disease or ulcerative colitis. A large-scale comparison trial of SCD to MED in adults with CD was published in 20212, with ongoing trials in UC and CD.

References

  1. Suskind, D. L., Wahbeh, G., Gregory, N., Vendettuoli, H., & Christie, D. (2014). Nutritional Therapy in Pediatric Crohn Disease: The Specific Carbohydrate Diet. Journal of Pediatric Gastroenterology & Nutrition, 58(1), 87–91. https://doi.org/10.1097/MPG.000000000000010
  2. Lewis, J. D., Sandler, R. S., Brotherton, C., Brensinger, C., Li, H., Kappelman, M. D., Daniel, S. G., Bittinger, K., Albenberg, L., Valentine, J. F., Hanson, J. S., Suskind, D. L., Meyer, A., Compher, C. W., Bewtra, M., Saxena, A., Dobes, A., Cohen, B. L., Flynn, A. D., … Herfarth, H. (2021). A Randomized Trial Comparing the Specific Carbohydrate Diet to a Mediterranean Diet in Adults With Crohn’s Disease. Gastroenterology, 161(3), 837-852.e9. https://doi.org/10.1053/j.gastro.2021.05.047

SCD Food Table

The food list provided is a simplistic overview of the basic requirements of the diet, offering a bird's eye view of restricted and allowed foods. It is not an all-inclusive list of the allowed and restricted foods, nor does it define all the rules of the diet.

This list should NOT be used as a guide to following the diet.

Details about the SCD

The final stage of SCD is described in the table. While SCD does not have official stages (it does have an introductory diet to last no more than 5 days and a short list of advanced foods) , the stages described on pecanbread.com are often adopted by patients with symptoms and active disease.

These stages are not part of the official diet but can be used as a guide when food introduction proves difficult. The SCD allows for introduction of other healthy foods outside the normal parameters of the diet after sustained remission (generally recommended to wait until 1 or 2 years of sustained remission). Because these food additions could be anything tolerated by the patient, they are not included in the food table. Many recommend sticking with the diet as written and not deviating outside the defined parameters, so addition of foods should be considered carefully.

Food Type
General Consensus
Allowed
Fish
Allowed
Seafood (other than fish)
Allowed
Poultry
Allowed
Red Meat (not processed)
Allowed
Fresh Legumes /Beans
Allowed
Vegetables (Other than starchy vegetables and nightshades, which are listed separately)
Allowed
Fruits
Allowed
Nuts
Allowed
Honey
Allowed
Eggs
Allowed
Coffee
Allowed
Mixed
Dried Legumes /Beans
Certain dried legumes allowed: Peanuts, navy beans, lima beans, black beans, lentils, split peas; soaking required
Nightshades (tomatoes, tomatillos, white potatoes [not sweet potatoes], eggplant, peppers, goji berries, etc)
Most allowed: no white potatoes
Dairy
Allows homemade 24-hour yogurt and cheeses aged 30 days or more
Seeds
Most allowed: no chia or flax
Fats/Oils
Most Allowed; No soybean oil, limit processed oils like canola oil
Alcohol
Some allowed: dry wine, vodka, gin, rye, Scotch, bourbon, whiskey
Excluded
Processed Meat
Excluded
Wheat / Gluten
Excluded
Corn
Excluded
Oats
Excluded
Rice
Excluded
Grains (other than wheat, corn, oats, and rice, which are listed separately)
Excluded
Starchy Vegetables (potatoes, sweet potatoes, yams, turnips, parsnips, etc)
Excluded
Artificial Sweeteners
Excluded
Sweeteners (other than honey and artificial sweeteners, which are listed separately)
Excluded
Processed Foods / Preservatives / Artificial Additives
Excluded
Cocoa
Excluded
Formula (PEN; eg, Boost®, Ensure®, Pediasure®, Modulen IBD®)
Excluded
Emulsifiers
Excluded

SCD Research articles

The SCD has been in use for a long time by some individuals but has only recently been reported in the medical literature for use in IBD with the earliest publication in 2014. Although published patient data is relatively small, the SCD has been studied for use in both Crohn's disease and ulcerative colitis, in children and adults.

Somebody in the kitch - view from the back while preparing healthy foods. Cutting board with various healthy foodsPink Milkshake and fruits on a white table and pink backgroundWoman stirring in a pot with vegetables.on the stove

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