Antidepressants and the scale — logging through a chemical headwind
Some antidepressants add a small hunger push, so the scale moves slower while your maths still works. Log honestly, keep talking to your psychiatrist, and never stop the pills for weight.
You started a new antidepressant. A few weeks later, the scale jumps up. You feel hungrier at night. The biscuits tin calls your name. Your first thought may be: "the pills did this, weight loss is hopeless now." Slow down. This is a real headwind, yes. But it is a small one. The maths still works. Your job is to log honestly, and your psychiatrist's job is to own the medicine. Let us look at the real numbers.
The honest number on the scale
A big Finnish study followed over 9,000 adults on antidepressants for about four years. People on the pills gained about 2.5 kg. People not on them gained about 1.4 kg. So the pill itself added about 1.1 kg over four years. Body fat holds about 7,700 kcal per kg. So 1.1 kg is about 8,470 kcal over four years. That is roughly 6 extra kcal per day. That is one extra bite of a roti a day. Some people get a bigger push than this average. But the point stands: the chemical headwind is real, and it is smaller than it feels.
If antidepressants push my weight up, weight loss is basically impossible.
mostly falsemostly false
The pills can raise your hunger a little. They can also make your body hold a bit of water. But they cannot break the maths. Your daily deficit is still food calories minus what you burn. If you eat a little less than you burn, you still lose fat. The headwind just means you may lose a touch slower, or feel a touch hungrier while you do it. That is annoying. It is not the end of the road. A small honest log in Burnie every day still moves the number down over weeks.
Some pills push the scale more than others
How to log through the headwind
I will just stop my antidepressant so the weight comes off faster.
falsefalse and risky
Please do not. About 20 in 100 people who stop an antidepressant abruptly get a discontinuation syndrome within days. It can bring dizziness, nausea, 'electric-shock' feelings, insomnia, and anxiety. Stopping also raises the chance of the depression coming back. Your mind matters more than a kilo. If the weight side-effect is bothering you, the safe move is to talk to your psychiatrist about a slow, planned switch. Never do it alone.
The bottom line
Yes, some antidepressants add a small chemical headwind. On average it is about 1 extra kilo over four years, smaller than it feels in your head. The maths of food minus burn still works. So keep logging honestly in Burnie, keep your dal-roti-walk baseline steady, and take the weight number to your psychiatrist. They own the medicine. You own the notebook. Never stop the pills for the scale.