For example, some hormones work by altering cell membrane permeability to other substances, some by altering metabolic processes, and others by affecting the muscle strength and heart rate (Saladin, ...

That includes key hormones like estrogen, along with fat-soluble vitamins and any organic pollutants that found their way into your bloodstream as you gained weight.

Vitamin D metabolites are not the only lipid-soluble hormones that are transported by specific carrier proteins. The steroids oestrogens and androgens also associate with binding proteins such as ...