Inspections of radioactive materials in foods not only in Fukushima but all of Japan are implemented according to the most rigorous standards in the world.
Standards in Japan are set to ensure that, even if people continue to eat foods, the impact they will experience from radioactive materials contained in the foods over their lifetime will be a sufficiently safe level (1 mSv/year or less). This is a stringent standard based on an indicator at which the Codex Alimentarius Commission, an international commission that sets food safety standards, deems it unnecessary to take any further measures.
Moreover, in production areas, measures are taken to prevent radioactive materials being transferred to and absorbed by farm and livestock products, and steps are taken to control fertilizers, soil improving materials, culture soil and so on. Thanks to these efforts, levels of radioactive materials included in farm and livestock products are declining every year, and cases of measurements exceeding the standard for radioactive cesium (100 Bq/kg in general foods, 50 Bq/kg in milk) have almost been non-existent in recent years.
Agricultural, forestry and fishery products undergo thorough monitoring inspections, etc. before shipping and all results are publicly disclosed.
Furthermore, the amount of additional radiation ingested in the case of eating an average diet is negligible at approximately 0.0005-0.0010 mSv/year, which corresponds to around 0.1% of the upper limit (1 mSv/year). At such a level, it is hard to imagine any health impacts arising.