Publications and Resources. Read the groundbreaking 1977 publication â Phylogenetic structure of the prokaryotic domain: The primary kingdoms ,â by Carl R. Woese and George E. Fox, in which Archaea, the third domain of life, is identified.
Youâre quite right that cod liver oil is a good source of vitamin D. According to the National Institutes of Health, it gives you 1,360 IU per tablespoon (I now recommend 2,000 IU daily). However, at least some kinds of cod liver oil provide as much as 13,500 IU of vitamin A, and thatâs way too much. The Upper Limit of vitamin A set by the Food and Nutrition Board of the National Academy of Sciences is 10,000 IU per day.
Some studies, however, have used doses of 20 mL or 30 mL per day. The best dose of cod liver oil for most uses has not yet been determined. Research is only in its early stages, too early to recommend dosages that are both safe and effective.Studies of cod liver oil have used doses of 20 mL or 30 mL of cod liver oil per day.esearch is only in its early stages, too early to recommend dosages that are both safe and effective. Studies of cod liver oil have used doses of 20 mL or 30 mL of cod liver oil per day.