These stimulants tend to increase alertness without the peripheral (body) effects or addiction/tolerance/abuse potential of traditional stimulants (such as amphetamine), as they lack direct dopaminergic action. Their effect on sleep structure is not fully established and may reduce quality of sleep.
Trans fats, or trans-unsaturated fatty acids, trans fatty acids, are a type of unsaturated fats that are uncommon in nature but became commonly produced industrially from vegetable fats for use in margarine, snack food, packaged baked goods and frying fast food starting in the 1950s.nly unsaturated fats can be trans or cis fat, since only a double bond can be locked to these orientations. Saturated fatty acids are never called trans fats because they have no double bonds. Therefore, all their bonds are freely rotatable.
How does the structure of a fatty acid with a cis double bond differ from the structure of a fatty acid with a trans double bond? In a cis fatty acid, the hydrogen atoms are on the same side ofthe double bond, which produces a bend in teh carbon chain. IN a trans fatty acid, the hydrogen atoms are on opposite sites of the double bond, which gives a carbon chain without any bend.