Spend 60-70% of your time cycling (i.e. for every 10 hours training cycle 7 hours run 2 hours and swim 1 hour) This is only a very basic guide line for injury prevention and you will get some cross over in fitness, the better you are on a bike your ironman marathon will be easier to complete.
People with liver disease and high alcohol intake may be at risk for liver toxicity from vitamin A supplementation. Vitamin A toxicity may lead to intrahepatic cholestasis, where bile cannot flow from the liver into the intestines. Vitamin A may cause low blood pressure. Caution is advised in people with low blood pressure or in those taking drugs or herbs and supplements that lower blood pressure.
When the constituent in liver responsible for the cure-vitamin B12 - was isolated in 1948, scientists found that cobalt was an important part of the molecule. Although cobalt can be toxic as an inorganic mineral, it is essential to life when incorporated into vitamin B12.Cobalt Function. The cobalt-containing vitamin B12 is required for the normal production and functioning of cells. It is particularly important in the bone marrow, nervous system, and gastrointestinal tract.dults require approximately 1 microgram of cobalt-as a component of Vitamin B12 - per day. Cobalt Deficiency Signs and Symptoms. Dietary deficiency is uncommon, usually only found in alcoholics, strict vegetarians, and pregnant or nursing women.