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Chinese infants consuming four different commercially-available infant formulas were evaluated on gut comfort and stool consistency parameters.Gut comfort characteristics were evaluated during a 7-day cross-sectional observational study in 409 healthy, term, exclusively formula-fed infants via questionnaires and fecal parameters.The stool consistency and color scores were different between the infants consuming one of the four commercially-available infant formulas including different fat sources, i.e. one milk fat-based (IF1), two structured vegetable fat blend-based (IF2 and IF4) and one palm oil-free vegetable fat blend-based (IF3). The scoring pattern showed more 'soft-formed' stools for IF1- consuming infants compared to infants consuming IF2, IF3 or IF4. In addition, a lower amount of green feces was observed in combination with an increase in golden-colored feces for IF1-consuming infants compared to the other groups. Furthermore, IF1-consuming infants reported less fussy/crying time during the night and less gut discomfort. Infants consuming milk fat-based IF1 showed significantly lower fatty acid soaps compared to palmoil free IF3-fed infants.Infants consuming milk fat-based IF1 experienced less gut discomfort compared to infants consuming other commercially-available infant formula. Lower fecal fatty acid soap levels, fussy/crying time during the night and gut discomfort were observed. These findings contribute to the current understanding of the association between lipid structure and gut comfort parameters. However, the suggested benefits noted cannot be fully linked to the effect of fat blend differences since formulas differ in ingredient-sourcing and processing. Future research should confirm the added benefit of milk fat-based infant formulas to improve gut comfort parameters.

Background: The Shanghai growth standards are higher than World Health Organization (WHO) growth standards, which may influence the feeding practices of the caregivers and increase the risk of overweight in these infants. This study aimed to compare the effects of different growth standards on childhood obesity in Shanghai metropolitan area. Methods: This was a cluster-randomized controlled trial conducted in 2 downtown areas with 19 community health service centers in Shanghai from November 2013 to December 2015. Randomization was done at the level of the community. Infants (health newborns) were assessed and monitored by the Shanghai growth standards (S-group) and the 2006 WHO growth standards (W-group), respectively. Measurements were taken at 1.0, 2.0, 4.0, 6.0, 9.0 and 12.0 months of age during follow-up period. Based on the values of length and weight measurements, according to the group’s growth standards, doctors provided the caregivers with corresponding clinical consultation. Changes in weight-for-age z-score (WAZ), length-for-age z-score (LAZ), and weight-for length z-score (WLZ) between 2 groups were assessed using mixed regression models. Overweight was compared between 2 group at all follow-up measurements. Results: A total of 6509 infants (52.1% were boys) were in the W-group, and 8510 infants (51.4% were boys) were in the S-group. The overweight ratios between two groups were distinct at 9 months of age (3.4% in W-group and 4.3% in S-group) and 12 months of age (2.2% in W-group and 3.8% in S-group), and the differences were statistically significant (P= 0.020 and P< 0.001, respectively). Compared to W-group, the increase in WAZ (coefficient= 0.04, P= 0.004) and WLZ (coefficient= 0.09, P < 0.001) were significantly greater, and the LAZ was lower (coefficient = －0.04, P = 0.047) in S-group (W-group values were used as reference in mixed regression models). Conclusion: Compared to the Shanghai growth standards, the adoption of WHO 2006 growth standards would reduce the risk of infant overweight in Shanghai metropolitan area up to 1 year of age. Trial registration number: ChiCTR1800015371, http://www.chictr.org.cn/Chinese Clinical Trial Registry. Key words: Overweight; community health; infant; growth standards

In order to understand the normal physical growth of Chinese children, data of children aged from 0 to 7 years from urban and rural areas of nine Chinese cities in 2005 were analyzed.The original data of height and weight were drawn into growth curves charts by Graphpad Prism 5.0 software according to the different age groups. The children were classified into five age groups: 0-3 months, 4-6 months, 7-12 months, 13-24 months, and 2-7 years.The average birth weight was 3.3 kg and the height averaged 50 cm. The average monthly weight gain was 1.0-1.2 kg and the average monthly increase of height was 4 cm in the 0-3 months group. By 3 months of age, the weight and height averaged 6.6 kg and 62 cm, respectively. In the 4-6 months group, the growth rate was reduced to a half of the 0-3 months group, with an average monthly weight and height gain was 0.5-0.6 kg and 2 cm respectively. The growth rate in the 7-2 months group was a half of the 4-6 months group. By 12 months of age, the weight and height average 9.9 kg and 75 cm, respectively. The average monthly weight and height gain in the 13-24 months group was 0.2 kg and 1 cm respectively, with an average weight and height of 12 kg and 87 cm respectively by 24 months of age. A steady growth was found in the 2-7 years group, with a yearly average weight and height increment of about 2 kg and 7 cm respectively. The formulas for approximate average weight and height in children between 2 and 7 years were as follows: age (yr)*2+8 (kg) (weight); age (yr)*7+75 (cm) (height).The approximate weight and height of normal Chinese children under 7 years of age can be evaluated by the key parameters and formulas above mentioned.