User talk:Gordon Panther

Vitamin B12
You addition was reverted because you did not provide a reference. However, that exact topic is already addressed in the article ("Because 10 to 30 percent of older people may be unable to effectively absorb vitamin B12 naturally occurring in foods, it is advisable for those older than 50 years to meet their RDA mainly by consuming foods fortified with vitamin B12 or a supplement containing vitamin B12.") with a citation. David notMD (talk) 07:37, 18 April 2020 (UTC)