Sentences with phrase «extensive observational evidence»

We know it exists by the extensive observational evidence of its gravitational effects in the cosmos.

Not exact matches

Interventions to improve breastfeeding initiation, exclusivity and duration are based on extensive evidence from both observational and intervention studies of short - and long - term health benefits of breastfeeding for both mothers and infants.13 — 15 Nevertheless, to our knowledge none of previous studies has systematically examined whether the increases in breastfeeding resulting from such interventions have equally benefited all socioeconomic groups.

Because antioxidants are widely used, and because there is laboratory and observational evidence of potential health benefits, antioxidants are the subject of extensive research across NIH, including recent NCCAM - sponsored studies that have been investigating:

Based on extensive evidence, there is no convincing alternative explanation supported by the extend of the observational evidence, that anything other than human activity is the dominant cause of the observed warming since the mid-20th century.