First, it's ironic that I present the null position and yet I am the one being asked to provide evidence to support my position. I'd think if you want to ban something for everyone that burden should be on you, not to mention the impossibility of "proving' a negative.OK, you did your research...good for you. Now, in the interest of being "open" and "honest", define "period of time". Is it a few hours? A day? A week? Even plutonium will lose it's harmful effects after a "period of time". So for your attack on the apparent, obvious and proven ill effects of trans-fat to be valid, this "period of time" must be minutes, or maybe an hour, because anyone who consumes trans fat at each meal will have a "build-up" otherwise; and if the "dissipation" period is 12-24 hours, it doesn't take long for a large "build-up" to occur, if one consumes trans fat (especially in amounts larger than what would be naturally present in any give food). And you presented nothing to counter the claim that trans fats in diet, if ingested regularly, can and do lead to health issues.
So please define "period of time" so your position can have some validity; otherwise, it means nothing.
The transient increase of ldl or decrease in hdl (which I did not mention earlier) associated with s high dietary trans fat intake can last for weeks. the thing is, people rarely consume the amounts given in the studies relating to this. (side note: HDL is generally considered the "good" cholesterol but at least one variant of HDL is thought to be harmful. This was "discovered" after people with high good cholesterol levels were found to be having a disproportionate number of cardiovascular events and underscores just how poor our understanding of cholesterol and risk factors for CHD really is)
But lets be clear: I am not stating that trans fats are good for you. I am stating that the normal average daily consumption of trans fats is not harmful in any way proven by science.
The average American takes in 1.3g of trans fats daily (see paragraph immediately preceding chart in following link):
http://www.cdc.gov/nutrition/everyone/basics/fat/transfat.html
Levels exceeding that intake level have not been shown to be harmful. It did not matter whether the source of trans fats was natural or man made. Even extremely high levels of trans fat intake 7-8x the average American's intake only showed a small increase in risk.
http://www.ncbi.nlm.nih.gov/pubmed/21427742Ruminant-TFA intake (increments ranging from 0.5 to 1.9 g/day) was not significantly associated with risk of CHD (risk ratio (RR)=0.92 (0.76-1.11); P=0.36), and neither was industrial-TFA intake, although there was a trend towards a positive association (RR=1.21 (0.97-1.50); P=0.09).
Now, is 1 meta-analysis of cohort studies the end-all be-all on the matter? No, but what do you have other than over-hyped estimates of lives supposedly to be saved by removing a product from the market which is not shown to be harmful to the average American?