Palm oil(palm olein,fractionated palm oil) is a natural product and is not harmful. However, when it goes through the process of hydrogenation (hydrogen enrichment), which means from a natural form to take a solid form(melting point more than 45 C°), the human body is unable to process the trans fatty acids in it.

For more details and interesting facts, watch the video with the participation of Prof. Donka Bailova: https://www.youtube.com/watch?v=92C3bRHCwWY