Similarity in gallstone formation from 900 kcal/day diets containing 16 g vs 30 g of daily fat: evidence that fat restriction is not the main culprit of cholelithiasis during rapid weight reduction.

Diets containing essentially no fat, 1-2 g fat per day, have resulted in cholesterol gallstones. Greater fat may result in less gallbladder stasis. Do gallstones form with greater fat content? We studied 272 moderately obese subjects who had normal gallbladder ultrasonograms.

Emotional conflict and well-being: relation to perceived availability, daily utilization, and observer reports of social support.

The link between emotional conflict and the perceived availability and use of social support was examined. One hundred and five undergraduate students completed measures of ambivalence over expressing emotion, repressive defensiveness, fear of intimacy, social support, and well-being. Self-reports, observer reports, and daily reports of social support during the previous month were collected.

SARAH: an expert system for training non-hygienists in carrying out occupational hygiene assessments.

The London Research Station of British Gas plc has developed an expert system as a training aid for managers responsible for assessments of the risks to health from exposure to harmful substances. SARAH (System for Advising on the Regulations for Assessing Hazards) uses an expert system shell with hypertext capabilities and runs on IBM compatible personal computers. Expert advice on occupational hygiene is not readily available: SARAH is therefore of value since it can free an experienced occupational hygienist for more complex tasks.