Not all fat is created equal—and some can quietly sabotage your health. The real danger isn’t the pinchable subcutaneous fat just under your skin, but visceral fat, which surrounds internal organs.

Social media is filled with posts about castor oil stomach packs and applying drops of castor oil into the belly button, claiming a vast array of health benefits including weight loss and detox.

This article was originally published on mentalfloss.com as Yes, You Need to Clean Your Belly Button-Here's the Best Way to Do It. Haphazardly dragging a soapy washcloth or loofah over your abdomen ...