After spending approximately 40 weeks inside the womb, the average newborn weighs 7 1/2 pounds. Most babies weigh between 5 1/2 and 10 pounds. The average length of a newborn is 20 inches (50 centimeters), with a range of 18 to 22 inches. The average head circumference (the distance around the head) is 14 inches (35 centimeters).
Lactobacillus and Bifidobacterium are the most common probiotic bacteria. The Lactobacillus genus has 18 different bacteria strains, while the Bifidobacterium genus consists of eight strains.
Choosing a probiotic supplement can be tricky because there are many different strains and many different dosages on the market. When you're looking for a good probiotics, be sure to check the label. It should identify the strain of bacteria contained in the product and how many bacteria, or colony-forming units (CFUs), there are in each recommended dose. The two most common strains you will find are Lactobacillus and Bifodabacterium, which includes the best-known L. acidophilus strain. Probiotics come in many forms, including chewable tablets, capsules, powders, liquids, and foods such as yogurt and dairy drinks. Most experts agree that the form you take doesn't matter as long as there are enough live organisms to begin growing in the intestine.