Guide

No, your body doesn’t melt fat; fat is broken down and most of its mass leaves as carbon dioxide in your breath, with water and energy used by cells.

Yes, gallbladder bile flow and bile acids shape glucose control via gut hormones, so disease or removal can nudge blood sugar higher or lower.

Insulin can return in some cases—type 2 may reach remission; type 1 rarely does without transplants or experimental cell therapy.

No, fat transfer isn’t rejected like an organ; it uses your own cells, though some fat may not survive and can resorb or form firm lumps.

Yes, vitamin D absorption can falter due to gut disease, some surgeries, liver or kidney problems, low intake, or certain drugs—test 25(OH)D and treat the

Yes, most foods contain cells because plants and animals are built from cells, though refined ingredients and some secretions are exceptions.

Yes—rare allergy or antibodies can blunt insulin, and more often resistance or poor injection sites make insulin seem not to work.

Yes, your body can shake from lack of food; low blood sugar triggers adrenaline that causes tremors.

Yes, your body can use stored fat to build muscle when you lift, eat enough protein, keep a small calorie deficit, and sleep well—body recomposition.

No, current evidence doesn’t show raspberry ketones change your period; supplement doses are poorly studied for cycle safety.