The evidence for the effectiveness of B serrata extracts is encouraging but not compelling
OBJECTIVE To assess evidence from r and omised clinical trials about the effectiveness of  extracts of Boswellia serrata ( frankincense ) .
Compliance and findings in a Swedish population screened for colorectal cancer with sigmoidoscopy.
AIM The aim of this study was to evaluate the patterns of compliance and the frequency of adenomas and neoplasms in a Swedish population . METHODS In 1996 , 2000 men and women born in 1935 or 1936 were selected at r and om from the population registers of Uppsala and Malmö/Lund . All subjects were invited by mail to participate . In a r and omised study design , subjects were either called up by a nurse to schedule the appointment for sigmoidoscopy or instructed to call themselves . At sigmoidoscopy  subjects with a cancer , an adenoma ( neoplastic polyp ) or more than three hyperplastic polyps were scheduled for a complete colonoscopy . RESULTS Thirty-nine percent ( 770/1988 ) of all the invited subjects had a sigmoidoscopy .  The participation differed between the two centres , 47 % at the Uppsala centre and 30 % at the Malmö/Lund centre ( P<0.01 ) . There was no statistically significant difference between the two different invitation groups . In all , 98 subjects ( 13 % ) were planned for  colonoscopy .  Thirty-one ( 35 % ) of the subjects having a colonoscopy were women and 57 ( 65 % ) were men . Fifty-five true adenomas were found in 46 subjects . All together , six subjects had proximal adenomas . Five adenocarcinomas were diagnosed , all within the reach of the sigmoidoscope . CONCLUSIONS The compliance was lower and the adenomas were fewer than expected . To increase compliance it is necessary with rigorously controlled invitation routines
The evidence for the effectiveness of B serrata extracts is encouraging but not compelling
OBJECTIVE To assess evidence from r and omised clinical trials about the effectiveness of  extracts of Boswellia serrata ( frankincense ) .