• Flaxseed has a few potential side effects.flax seed image by Soja Andrzej from Fotolia.com
  
  A blue plant that is grown for its oil in both the northeast United States and Canada, flaxseed has been touted for a variety of health benefits for both adults and children. However, there are a few possible side effects of taking flaxseed that consumers should watch out for.
  
  

Allergic Reactions

• According to WebMD, some people have reported allergic reactions after taking flaxseed oil or sprinkling flaxseed on food; likewise, factory workers who work with flaxseed have also noted allergic reactions. As with any new food, it is important to start small and make sure it doesn't lead to hives, itching, headaches or any other signs of an allergic reaction.
  
  

Gas and Diarrhea

• People who take flaxseed oil for its laxative properties need to watch their dosage, because flaxseed has been known to cause both gas and diarrhea. Due to its high fiber content, flaxseed can help with constipation, but should be taken in very small doses to start and always with water.
  
  

Bleeding

• Men and women with bleeding disorders may be at risk for increased bleeding after taking flaxseed. If you have any bleeding disorder, talk to your doctor before taking flaxseed oil. Likewise, flaxseed might also increase bleeding risk during a surgery, so patients should stop taking it at least two weeks prior to any scheduled procedure, according to WebMD.
  
  

Cancer Risk

• While there is no evidence that flaxseed leads to prostate cancer, due its high content of phytoestrogens (compounds also found in soy products, which continue to be studied), experts recommend that men who have a high risk of prostate cancer avoid flaxseed. In addition, anyone at risk of breast, ovarian or uterine cancer should also take flaxseed only at the recommendation of their doctor.