Can probiotics help with colic?

The gut or gastrointestinal tract is a long tube that starts at the mouth and ends at the anus. It is within this system that what we eat is processed with nutrients being absorbed and waste being excreted as stool(1). The process of digestion can be broken into four main sections, oral processing to mechanically break down food; gastric processing to begin the chemical breakdown; small intestinal processing to allow the absorption of nutrients from macromolecules; then water removal occurs in the colon(1,2).

 

Colic is a temporary self-limited condition, which occurs within the first few months of life. It is characterized by inconsolable crying of without a known cause(1). Despite appearing benign nature, some research has linked colic in infancy with complications in later life such as sleeping disorders and gastrointestinal issues(2). Furthermore, a colicky infant serves as a significant source for maternal anxiety, and depression, with it being the most common reason for seeking medical advice for children of this age(3). Despite the exact factors which result in colic in babies remaining unknown at present, recent research suggests that gut bacteria may play a key role(4).

Further studies have shown that probiotics may play a preventative role in the development of colic. A clinical study took place between 2010 and 2012 where children received Lactobacillus reuteri suspended in oil five times a day for three months. Parents of the children recorded a number of details including the number of minutes a day spent crying and the number of stools a day. Results claimed that those who received the probiotic strain had better stool frequency and spent half as long crying each day as the placebo group(6). However additional studies with this bacterium have seen divided results.

 

For example a meta-analysis carried out at the University of Melbourne found Lactobacillus reuteri to be ineffective in formula fed babies, it only worked for breast- fed babies. This is believed to be due to the presence of glycerol in breast milk but not in formula. The fermentation of glycerol by L. reuteri is thought to encourage inhibition of pathogenic bacteria(8), this may be the reason some parents reported improvements in colic symptoms when giving their baby probiotic supplements containing Lactobacillus reuteri(6). Despite the split in results both trials saw no side effects with probiotic administration, and therefore do provide grounds for further studies regarding the use of probiotics to treat colic.  

Another bacterium which has been studied for use as a probiotic therapy in infants is Bifidobacterium longum. This is found commonly in breast milk and healthy infant stools(9). A recent clinical trial used a formula containing pentosaceus CECT 8330 and B. longum CECT 7894 bacterial strains and examined how this effected colicky infants. Researchers found that this formula reduced gas production in both formula fed and breast fed babies as well as inhibiting the growth of other pathogenic bacteria and reducing crying time by up to 68%(10). Since babies with colic have been found to have differential gut flora to healthy babies(5) the modulation in the microbiome seen with these strains provides new avenues for the use of easily available and low-cost probiotic supplements to treat or prevent colic.  

 

SOURCES

  1. Wake M, Morton-Allen E, Poulakis. Prevalence, stability, and outcomes of cry-fuss and sleep problems in the first 2 years of life: prospective community-based study. Pediatrics. 2006 Mar; 117(3):836-42.
  2. Savino F, Castagno E, Bretto R et al. A prospective 10‐year study on children who had severe infantile colic. Acta Paediatr.2005; 94: 129–32.
  3. McMahon C, Barnett B, Kowalenko N. Postnatal depression, anxiety and unsettled infant behaviour. Aust N Z J Psychiatry. 2001 Oct; 35(5):581-8.
  4. Ong TG, Gordon M, Banks SSC, Thomas MR, Akobeng AK. Probiotics to prevent infantile colic. Cochrane Database of Systematic Reviews 2019, Issue 3. Art. No.: CD012473.
  5. de Weerth et al. ‘Intestinal microbiota of infants with colic: development and specific signatures’, Paediatrics, 2013
  6. Indrio F, Di Mauro A, Riezzo G et al.'Prophylactic Use of a Probiotic in the Prevention of Colic, Regurgitation, and Functional Constipation: A Randomized Clinical Trial'. JAMA Pediatr. 2014.
  7. Sung, V. et al. BMJ.Treating infant colic with the probiotic Lactobacillus reuteri: double blind, placebo controlled randomised trial'.2014
  8. De Weirdt, Glycerol supplementation enhances L. reuteri’s protective effect against S. Typhimurium colonization in a 3-D model of colonic epithelium. PloS one. Public Library of Science, 7(5). 2012.
  9. Smilowitz JT, Moya J, Breck MA. BMC Pediatr. 2017 May 30; 17(1):133.
  10. Santas, J., Fuentes, M. C., Tormo. Pediococcus pentosaceus CECT 8330 and bifidobacterium longum CECT 7894 show a trend towards lowering infantile excessive crying syndrome in a pilot clinical trial,” International Journal of Pharma and Bio Sciences, 2015.
 

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