Removing a cell from an embryo can, in some cases, cause its demise.
And these blends could interfere with prescription drugs or in some cases cause harmful reactions.
Stent procedures can, in rare cases, cause bleeding, stroke or a heart attack.
Seasonal changes can also affect results, and in some cases cause unpleasant side effects.
These diseases affect mitochondria (which provide our bodies' cells with energy) and in many cases cause sufferers to die in childhood.
Bute is banned from the human food chain, because it can in rare cases cause a potentially life threatening illness, aplastic anaemia, or bone marrow failure.
Originally from sub-Saharan Africa, the virus can, in fatal cases, cause swelling in animals that restricts the flow of blood to the tongue, leaving it blue.
This contamination may "in rare cases cause serious or life-threatening side effects" in patients with heart conditions, the company said.
High levels can damage the brain, kidney, liver, nerves and stomach and, in extreme cases, cause death.
Symptomatic infections in 10 percent of congenital cases cause jaundice, fever, and enlargement of the spleen and liver.
Although coronary artery disease is most frequently caused by atherosclerosis, inflammation of the blood vessels may, in rare cases, cause obstructive lesions of the coronary vessels.
