You made it through treatment. That alone took everything out of you. But now you are dealing with something nobody really prepares you for, your body feels different, the weight crept up, and you are trying to figure out what to do about it. So you start looking at your diet. Low-carb. Low-calorie. Maybe both. Makes sense. Food feels like something you can actually control after months of feeling like nothing was in your hands. But before you cut anything out, it is worth understanding what these diets actually do and whether your body is even ready for them right now.
This weight is not what you think
Cancer treatment puts the body through serious stress. Medications, inactivity, disrupted sleep, and hormonal shifts all of it affects how the body stores fat and burns energy. The weight that came on during treatment did not come from laziness or bad choices. It came from a body doing its best to survive something hard. That context matters because it changes how you should approach losing it.
Cutting calories
Eating less than your body needs leads to weight loss over time. Simple enough. But cutting too hard, too fast causes the body to break down muscle along with fat. After treatment, when the muscle is already lower than it used to be, that makes things worse: energy drops, metabolism slows further, and you end up spinning your wheels. Steady, moderate reductions work. Drastic cuts do not.
Cutting carbs
Reducing carbs, especially refined ones like sugar, white bread, and processed snacks, helps stabilize blood sugar and reduces the kind of insulin spikes that push the body toward storing fat. A moderate approach works well for most people. Going extreme rarely holds up long-term and puts unnecessary strain on a body still finding its footing.
Which one works
Both can work. The right one is whichever you can honestly keep up with. Short bursts of extreme dieting followed by burning out help nobody. Start simple. Eat protein at every meal. Cut back on sugar and processed food. Eat at regular times. Move when you can. These habits are not flashy, but they hold up over months and years in a way that crash diets never do.
Talk to someone
A dietitian with cancer recovery experience can build an approach around your specific situation, your medications, your treatment history, and where your body is right now. That is worth far more than any generic plan. You put in too much to get here. The recovery deserves the same seriousness.