718: First trimester maternal weight in USA continues to rise

Maternal exposure to first-trimester sun

Maternal exposure to first-trimester sunshine is associated with increased birth weight in human infants

✍ Karen Tustin; Julien Gross; Harlene Hayne 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 142 KB

## Abstract Two alternative hypotheses have been generated to account for seasonal variation in the birth weight of human infants born in industrialized countries. First, it has been hypothesized that low ambient temperature during the second trimester of gestation decreases birth weight. Second, i