In healthy subjects , appetite and short term food intake , risk of cancer , risk of diabetes , risk of dental caries , weight gain and risk of obesity are the most investigated health outcomes .
Overall there is no conclusive evidence for beneficial and harmful effects on those outcomes .
In subjects with diabetes and hypertension , the evidence regarding health outcomes of NNS use is also inconsistent .
Background Food products containing non-nutritive sweeteners ( NNSs ) instead of sugar have become increasingly popular in the last decades .
Their appeal is obviously related to their calorie-free sweet taste .
However , with the dramatic increase in their consumption , it is reasonable and timely to evaluate their potential health benefits and , more importantly , potential adverse effects .
The main aim of this scoping review was to map the evidence about health outcomes possibly associated with regular NNS consumption by examining the extent , range , and nature of research activity in this area .
Habitual caffeine intake and the risk of hypertension in women.
CONTEXT Caffeine acutely increases blood pressure , but the association between habitual consumption of caffeinated beverages and incident hypertension is uncertain . OBJECTIVE To examine the association between caffeine intake and incident hypertension in women . DESIGN , SETTING , AND PARTICIPANTS Prospect i ve cohort study conducted in the Nurses ' Health Studies ( NHSs ) I and II of 155,594 US women free from physician-diagnosed hypertension followed up over 12 years ( 1990 - 1991 to 2002 - 2003 question naires ) .  Caffeine intake and possible confounders were ascertained from regularly administered question naires . We also tested the associations with types of caffeinated beverages . MAIN OUTCOME MEASURE Incident physician-diagnosed hypertension . RESULTS During follow-up , 19,541 incident cases of physician-diagnosed hypertension were reported in NHS I and 13,536 in NHS II . In both cohorts , no linear association between  caffeine  consumption and risk of incident hypertension was observed after multivariate adjustment ( NHS I , P for trend = .29 ; NHS II , P for trend = .53 ) . Using categorical analysis , an inverse U-shaped association between caffeine consumption and incident hypertension was found . Compared with participants in the lowest quintile of caffeine consumption , those in the third quintile had a 13 % and 12 % increased risk of hypertension , respectively ( 95 % confidence interval in NHS I , 8%-18 % ; in NHS II , 6%-18 % ) . When study ing individual classes of caffeinated beverages , habitual coffee consumption was not associated with increased risk of hypertension . By contrast , consumption of cola beverages was associated with an increased risk of hypertension , independent of whether it was sugared or diet cola ( P for trend < .001 ) . CONCLUSION No linear association between caffeine consumption and incident hypertension was found . Even though habitual coffee consumption was not associated with an increased risk of hypertension , consumption of sugared or diet cola was associated with it . Further research to eluci date the role of cola beverages in hypertension is warranted
In healthy subjects , appetite and short term food intake , risk of cancer , risk of diabetes , risk of dental caries , weight gain and risk of obesity are the most investigated health outcomes .
Overall there is no conclusive evidence for beneficial and harmful effects on those outcomes .
In subjects with diabetes and hypertension , the evidence regarding health outcomes of NNS use is also inconsistent .
Background Food products containing non-nutritive sweeteners ( NNSs ) instead of sugar have become increasingly popular in the last decades .
Their appeal is obviously related to their calorie-free sweet taste .
However , with the dramatic increase in their consumption , it is reasonable and timely to evaluate their potential health benefits and , more importantly , potential adverse effects .
The main aim of this scoping review was to map the evidence about health outcomes possibly associated with regular NNS consumption by examining the extent , range , and nature of research activity in this area .