Weight loss gets made way more complicated than it needs to be. Strip away the fads and it comes down to one thing: are you eating fewer calories than you burn, consistently, in a way you can actually stick to. That last part is where most people — especially clients over 40 — come unstuck.
How Many Calories Do You Actually Need?
Your calorie needs depend on your age, activity level, muscle mass, and goals — there’s no single number that applies to everyone. As a rough population-level guide, women generally need a minimum of around 1,600 calories a day and men around 2,000, but these are averages, not targets. The real number depends on the individual, which is exactly why a generic calorie target from an app rarely works long-term — it’s something I work out properly with every client rather than handing them a number off a chart.
Here is a rough example. If someone maintains their weight on about 2,200 calories a day, a gentle deficit of 300 to 500 calories puts them at 1,700 to 1,900. That is usually enough to lose weight steadily without feeling flat, and it is far easier to keep up than a big cut.
Why a Deficit Alone Isn’t Enough
Eating less than you burn is the mechanism behind weight loss — but how you get there matters just as much as the number. I’d rather see a client hit their calorie target eating mostly whole foods with enough protein than “make the numbers work” with processed food and alcohol. The quality of your calories affects hunger, energy, and whether you can actually sustain the deficit past week three.
This is also where I get clients to think about calorie banking rather than rigid daily restriction — instead of trying to hit the exact same number every single day, you can eat a bit more on a big training day or a social occasion and pull back slightly the day before or after, as long as the week averages out to your deficit. It’s far easier to stick to than a strict daily cap, and it’s usually the difference between a plan that lasts and one that falls apart after a birthday dinner.
For example, if you know you are going out for dinner on Saturday, you might eat a little lighter earlier in the day and keep your protein up, rather than skipping meals and arriving starving.
The Over-40 Factor
Metabolism does shift with age — but the bigger driver of weight gain after 40 is usually muscle loss, not some mysterious metabolic collapse. Less muscle means fewer calories burned at rest. This is exactly why the caloric intake conversation and the strength training conversation are the same conversation for clients in this age group — losing weight without preserving muscle usually just means losing weight and strength.
The Habits That Actually Move the Needle
- Protein first. It’s the most filling macronutrient and helps preserve the muscle you’re working to keep.
- Watch liquid calories. Sugary drinks and alcohol add up fast without ever making you feel full.
- Don’t over-restrict. Cutting calories too aggressively slows your metabolism down and makes the deficit harder to sustain — not easier.
- Plan ahead. A bit of meal prep removes the daily decision fatigue that derails most diets.
Pick one of these to focus on for the next two weeks rather than trying all of them at once. When it feels automatic, add the next one. Small changes you keep beat big changes you drop.
The Bottom Line
Sustainable weight loss isn’t about finding the perfect number — it’s about finding a deficit you can actually live with, built on real food, adequate protein, and enough activity to protect your muscle as you go. If you want a caloric target that’s actually built around your body and your goals rather than a generic app number, book a nutrition consult and we’ll work it out together.
Related reading: how to track macros and alcohol and fat loss.