One of gorachev s reforms, prestrokia, had the goal of

Mikhail Gorbachev encouraged the political movement called Perestroika to restructure the Soviet political and economic system during the 1980s and 1990s. The measure aimed to allow more independency in the actions taken by the ministries and the market. Although the movement did not intend to command the economy, it was focused on making socialist policies more efficient for the Soviet citizens. He would refer to this process as glasnost, which means openness and transparency.

it might look like that the ideal way to research the health effects of trans fats is through a controlled experimental feeding trial. but these kinds of trial have several important limitations that the researcher must look into:

short in duration (this factor usually checks up on the intermediary risk factors rather than the actual outcomes of the disease)

limited dietary changes

only makes use of healthy participants