My hormones make me fat - is that really true?
Hormones can slow weight loss by a small real amount - about 65 to 230 kcal a day. They never make weight loss impossible, because burning fat still follows the same 7700 kcal per kilo rule for everyone.
Lots of people blame hormones when the scale won't move. That is partly true, and partly a story we tell ourselves. Let us look at what hormones actually do - and what they don't. Every number below comes from a real study or database, rounded and given as honest ranges.
My hormones make losing weight impossible.
mostly falsemostly false - Hormones can slow things down, but they cannot stop you. When you lose weight, your body burns a little less each day. Scientists call this adaptive thermogenesis. It is small - only about 65 to 230 kcal a day. That is like one extra katori of rice or one small laddoo, not a locked door.
One kilo of fat = about 7700 kcal
This is the one number hormones cannot change. To lose one real kilo of body fat, your body must burn about 7700 kcal more than it eats. Your thyroid, your insulin, your stress hormones can nudge the path - but this maths stays the same for everyone. Hormones add a small hill, not a wall.
Assumptions: Wishnofsky 1960 gives ~7700 kcal per kg of body weight lost; adipose tissue (the actual fat store) is closer to ~8000 kcal/kg. Used 7700 as the round, well-known figure.
I gained 2 kg overnight, so my hormones must be storing fat.
falsefalse - You cannot build 2 kg of fat in one night. That would need about 15,400 kcal, which is 2 times the 7700 kcal rule. What really moves overnight is water. Your muscles store glycogen (stored sugar), and each gram of it holds 3 to 4 grams of water. Hormones like cortisol and your monthly cycle just shift this water around. The scale jumps, the fat does not.
What a 1-2 kg scale jump really is
Work with your hormones, not against them
- Weigh yourself once a week, not every morning. Daily swings are mostly water, and they will scare you for nothing.
- Eat enough protein - one katori of dal or paneer at lunch helps keep your muscles and your metabolism steady while you lose fat.
- If your weight is stuck, cut salty pickles and papad for a few days. Often it is just water held by the extra sodium.
- Sleep matters as much as food. Poor sleep raises your hunger hormones and makes you crave sweet tea and biscuits the next day.
The bottom line
Hormones are real, and they make the road a little longer - about 65 to 230 kcal a day, plus some water weight that hides your progress on the scale. But the maths never lies: one kilo of fat is about 7700 kcal, and that rule works for everyone. So don't use hormones as an excuse to quit. Use them as a reason to be a little more patient.