Is soybean oil safe? Google tells us:

• In addition to its availability and affordable price tag, soybean oil's high smoke point and neutral flavor make it a great option for frying or sautéing a variety of dishes. Soybean oil also comes with numerous health benefits, including its support for heart, bone, and skin health.
  The source: US Soy. (Of course they would say it's safe, they sure would not say it's not safe, but use it anyhow.) See also: canola oil