We found that, compared with 32 normal people in a control group, psychopaths had an 18% smaller amygdala, which is critical for emotions like fear and is part of the neural circuitry underlying moral decision-making.

WSJ: Neurocriminology: Inside the Criminal Mind

For example, one of the most widely cited intervention studies on soda and weight, ( Ebbeling et al. 2006) took 103 adolescents aged 13 to 18 who regularly consumed soda and randomly assigned them to either a group that received no calorie beverages for six months by way of home delivery or a control group that carried on drinking soda as normal.

FORBES: ABC News Attacks Scientist Who Exposed Bias In Obesity Research

Each one is naturally rich in vitamin E - and other potentially important minerals - and for each there is a similarly tasting "normal" soup that could be used for the control group of pregnant women.

BBC: 'Super soup' test in asthma trial