In Koriyama shi Fukushima, Dr Kikuchi Nobutaro surveyed the increase of the weight of the children.
They compared the increase of the weight of 245 of 4~5 years old children at 2 kindergartens in Koriyamachi.and they pointed out children grew up only 26% of last year. It can be said, children stopped growing up in Koriyama, Fukushima.
As the result,
7/2009 ~ 6/2010 → +3.1kg
7/2010 ~ 6/2011→ +0.81kg (only 26% of growth measured the previous year)
Another doctor gives a comment about this.
@GoodBye_Nuclear
チャーリー吉川
郡山の園児。菊池信太郎医師によると、外で遊べず筋肉量増加が鈍ったことも考えられるとのこと。お母さんは子供が「おなかがすいたと言わなくなった」と証言。でも待て。育ち盛りの子供が「おなか減ったと言わない」ことの異常さ。年間たった500gしか増えない子もいるという。異常が進行中。
Dr.Kikuchi states it may be because children can’t play outside, they lost muscles.
However, mothers testify their children don’t say they are hungry anymore. It’s very unusual. Some of the children have grown only by 500g through the year.
(Source)