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Why You're Not Losing Weight — And It's Probably Not What You Think

By Sarah Mirkin, RDN · April 18, 2026

If you feel like you're doing everything right and the scale still won't budge, I want you to stop blaming yourself. After 25 years of working with women on weight management, I can tell you with confidence: the problem is almost never willpower. It's habits you may not even realize are working against you — and biology that nobody explained to you.

Let's talk about both.

The Habits That Are Quietly Holding You Back

These are the patterns I see most often in clients who come to me frustrated, convinced they're broken. They're not broken. They just haven't had the right information.

You're not sleeping enough. This is the most underrated weight loss factor there is. Without enough quality sleep, you'll feel hungrier, make poorer food choices, and — here's the part that surprises people — your metabolism actually slows down. If you're working out consistently and not seeing results, poor sleep could be a significant part of why.

You think eating out carefully means eating light. You ordered the salmon. You skipped the bread. But restaurants are in the business of making food taste incredible, which means generous portions and a lot of added fat. It's genuinely easy to overeat without realizing it. I'm not going to tell you to stop eating out — that's not realistic or enjoyable. I'll teach you how to navigate it so it fits into your life.

You go to the gym but sit the rest of the day. Thirty to sixty minutes of exercise is great. But if you're sedentary for the other 23 hours, you're not moving enough. Overall daily movement matters as much as structured workouts.

You skip food during the day and overeat at night. This one is extremely common. When you undereat during the day, your body gets its revenge after dinner. Excessive nighttime hunger almost always leads to overeating less nutritious foods. Eating regularly throughout the day — yes, more food — is often the fix.

Your afternoon snack is carb-heavy. A carb-heavy snack causes a blood sugar spike followed by a crash, leaving you ravenous an hour or two later. Pairing carbs with protein stabilizes your energy and your appetite.

You're a member of the clean plate club. Most of us were raised to finish what's on our plate. But eating past the point of satisfaction — regardless of what's left — is one of the most consistent drivers of weight gain. Reconnecting with your hunger and fullness signals is a skill, and it's one I work on with every client.

Vacation is an excuse to abandon everything. Rest and enjoyment are important. But treating vacation as a free pass to stop moving and eat without any awareness is a pattern that adds up. An active vacation can be just as relaxing — and you'll feel so much better when you come home.

Why Women Over 40 Face a Different Challenge

If you're over 40 and finding that what worked before simply doesn't anymore, you're not imagining it. The biology is real.

During perimenopause and menopause, falling estrogen levels make blood sugar more prone to spiking and crashing — which drives stronger, more urgent cravings, especially for carbs and sugar. Meanwhile, most people lose muscle mass steadily after their mid-thirties. Since muscle is your primary calorie-burning engine, less muscle means a slower metabolism. You could be burning 300–500 fewer calories per day than you did in your twenties, according to the American Council on Exercise.

The instinct most women have is to cut calories further and add more cardio. I understand it — it feels logical. But it consistently backfires.

Too much cardio combined with too little food is perceived by your body as a survival threat. In response, your body slows your metabolism even further to protect its fat stores. I've seen this pattern hundreds of times, and it always leads to the same frustrating plateau.

What Actually Works

This is the part that surprises almost everyone: eating more, and eating more frequently.

When you fuel your body adequately throughout the day — with the right balance of protein, healthy fats, and carbohydrates — your metabolism stays elevated, your hunger hormones stay regulated, and your energy stays consistent. You make better choices. You don't arrive at dinner starving. You don't binge at night.

The goal is never deprivation. All foods can fit in a balanced approach. What I teach my clients is a sustainable way of eating that works in real life — at restaurants, on vacation, at family dinners — not just when conditions are perfect.

Diets don't create lasting results. Habits do. My job is to help you build the kind of healthy habits that stick permanently, not for the next 6 weeks.

The Gut-Weight Connection

One more thing worth knowing: digestive health and weight are more connected than most people realize. Conditions like IBS and SIBO can affect how your body absorbs nutrients, how your hormones regulate hunger, and how your metabolism functions. If you're struggling with both digestive issues and weight management, addressing them together often produces better results than tackling either one alone.

It's something I work on with many of my clients, and it's one of the reasons my approach is different from standard nutrition counseling.

If you're tired of spinning your wheels and ready for a real plan, I'd love to talk.

About the Author

Sarah Mirkin, RDN, CPT, LD is a Monash-certified dietitian specializing in IBS, SIBO, and sustainable weight loss. With over 25 years of experience, she helps clients find lasting relief through evidence-based nutrition.

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