Vital statistics

Today, exactly 100 days after his last visit to the pediatrician, Isaac had his 18-month well-baby exam. His height is now 34 1/4 inches and he weighs 24 pounds, 3 ounces.

He grew an inch and a quarter in those 100 days, although he only gained half a pound. His height continues to be in the 93rd percentile, while his weight has dropped to the 35th percentile. "Just like his parents," the doctor commented. I'm glad he said that, because even though I know I come from a family of skinny people, I might otherwise be alarmed by the sudden change in Isaac's weight percentile -- it dropped ten points since his last visit at 15 months.

Although looking back at his historic weight percentiles, it has been a slow and steady decline, and it was the small increase at the 15 month visit that was the anomaly:

0-6 months -- 60%
8 months -- 55%
10 months -- 45%
12 months -- 40%
15 months -- 45%
18 months -- 35%

If you're for some reason interested in more detail (and I really can't imagine that many of you are), you can visit Isaac's measurements page over at his Trixie Tracker site.