But a man may not have any of these symptoms and still have prostate cancer, says Gerald Chodak, MD, a Chicago urologist and author of Winning the Battle Against Prostate Cancer: Get the Treatment That is Right for You (Demos Health).
I had no idea there was so much discrepancy in opinion. Newborn is 0-3 months. Infant is 3-24months. Toddler is 2 until 4. 4-5 is preschooler. At 8-12 they become a tween. Teen is 13-18. Young adult is 18-29. 30-65 is middle age. 65+ is a senior.
Infants are babies from two months to one year old. Toddlers are babies from one year to four years of age. Others may have different definitions of these terms. For example, some people may consider toddlers to be 18 months old to 3 years old, and a 4-year-old might be considered a preschooler. Merriam-Webster dictionary simply says a newborn is a baby who is recently born and does not put an upper limit to the term.