So, basically, withholding information is not the same thing as lying, but depending on the situation, you will have to decide whether it is better to withhold the information or not.
Hexachlorocyclohexane (HCH) is a manufactured chemical that exists in eight chemical forms called isomers. One of these forms, gamma-HCH (or Î³-HCH, commonly called lindane) is produced and used as an insecticide on fruit, vegetables, and forest crops.
Hydroxycitric acid (HCA) is a substance found in tropical plants, such as Garcinia cambogia. It is traditionally used in Indian and Thai cooking. However, it is also commonly used in weight loss supplements. (Click HCA Uses for more information.)