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Why is it so hard to lose weight but so easy to gain weight

147 replies

Appleday11 · 24/02/2026 21:53

I have been trying for the last two years to lose weight. It took me about six months to lose three pounds. Then I went to my parents for Christmas, ate more than I usually would and I put on three pounds in one week. Three months later i havent been able to shift the three pounds. I go out walking every day, I go to the gym three times a week. I eat pretty healthily. I only let myself have snacks one day a week. The rest of the week is soup, salads, chicken etc. I hate the mental exhaustion of trying to lose weight.

Why does it take so long to get weight off, but so little time to put weight on.

OP posts:
Ritaskitchen · 25/02/2026 09:45
  1. you need more protein it helps with feeling full. Same with water
  2. download my fitness pal. Pay for the upgraded version. Find out how many calories you need to your height and activity level (lightly active) to lose 0.5 - 1 lb a week.
  3. track everything and aim for 100g minimum protein a day. Keep to the calorie amount
  4. walk 8-10 thousand steps a day. Don’t add the calories from your waking to your daily calories
If after doing this consistently for a month you haven’t lost any weight then go to the doctors as ask for a thyroid test.
ViciousCurrentBun · 25/02/2026 09:53

I wasn’t overweight but due to a diagnosed heart issue I have changed my food a lot. The main thing I have not given up but eat only once or twice a month is cheese. I have upped my fibre intake. Porridge with seeds and nuts every day and to compensate this extra food a smaller lunch and dinner where I cut the main carb, also a big increase in pulses. Also a big drop in the caffeine I drink. Just one proper tea a day, vey occasionally two and now water and green tea.

I am taking part in a study on health currently and lost 3 pounds in a month with these changes. It was not planned.

Bushyfox · 25/02/2026 09:56

There’s lots of great advice on here OP about protein, high volume, low calorie eating and weighing absolutely everything you eat.

You mentioned myfitnesspal and not getting on with it. Try a free trial with Nutracheck it’s similar but I find more user friendly and foods are UK based.

When you’re overweight it’s helpful to look at where that’s come from to see how to get it off. Is it grazing kid’s leftovers, calories from liquids either alcohol or high sugar drinks. Maybe evening snacking or weekend treats? It’s too easy to gain weight. Getting it off is hard, but doable if you’re honest with yourself and consistent over the months. Good luck.

Haveyouanyjam · 25/02/2026 09:58

Watdidusay · 25/02/2026 09:40

I don't follow your logic, sorry.

You say actually people can eat too few calories to lose weight, then back this up by saying the number of overweight compared to underweight people in the population is evidence, then say we are in a world where high sugar and high fat foods are in abundance.

The logical flow in your writing really implies we have an overweight population due to the foods we have normalised (this is true) but you attribute being overweight to people eating too few calories?

I will need the dots joined up.

I never said people are overweight because they aren’t eating enough. I said that eating too little can slow your metabolism somewhat a make it harder to lose more weight as we are biologically guarded against becoming underweight.

To be overweight in the first place obviously you must have been consuming more calories than you were burning but that’s not what the conversation is about. It’s about why it can be hard to lose weight.

MasterBeth · 25/02/2026 10:13

Yogaandchocolate · 25/02/2026 08:06

Here’s an example of what I think OP is talking about - it relates to epigenetics. https://www.ohsu.edu/school-of-medicine/moore-institute/dutch-famine-birth-cohort
“Children whose mothers were in utero during the famine were heavier at birth, while those whose fathers were exposed in utero were heavier in adult life – suggesting different epigenetic influences according to the sex of the parent”

This is really helpful, but it's not what the OP claimed.

MasterBeth · 25/02/2026 10:14

LilyCanna · 25/02/2026 08:08

Hey OP it was a shame the poster who was being sneery at you didn’t condescend to explain what was wrong with what you were saying! Simply, genetics is about the code in your DNA. Our genes can be affected by our parents’ experiences before our conception IF there is something which causes DNA mutation in their egg or sperm cells, like radiation. This could potentially then be passed on to our own children too through the DNA ‘instructions’ in our own eggs or sperm.
We can also be affected by experiences in our own lifetime, including within the womb, which have lifelong effects but don’t alter the code in our DNA - they aren’t genetic changes. For example foetal alcohol syndrome. So if your mother is starving it would make sense that would affect the environment in the womb and maybe affect how your body regulates itself with hormones in future.
Lamarckian theory was mentioned. Lamarck was the guy who, pre-Darwin, thought evolution occurred because changes during an animal’s lifetime got passed on to their offspring, e.g. giraffes’ necks stretched from reaching up and their offspring were born already having long necks like their parents.
Darwin realised this isn’t how evolution works and came up with the correct theory of natural selection - there is natural variation in the population and a slight advantage to, e.g. giraffes with longer necks would mean that they had, on average more offspring, which would gradually change the population over time. Although Darwin couldn’t explain everything about his own theory as they didn’t know about genetic inheritance back then (or to be accurate the very first research had been done but Darwin never got to read it!).
Sorry this is a bit of a tangent for a weight loss thread, but I hope it makes sense.

And this is really helpful too.

OldandTired66 · 25/02/2026 10:27

I lost 2 stone on low carb and another 2 with the help of mounjaro. Low carb really helps with cravings. Carbs just spike my blood sugar and make me feel hungry. Cut out the bread and pasta, more protein, more fat, lots more veg, non carb snacks. Took 2 years but is staying off and I don’t even think about rice, potatoes or pasta. Do miss bread but ration to 1 slice for breakfast. You will be surprised how much butter / oil/ cheese you can eat and stay in calorie deficit when there’s no bread / cake / biscuits in the picture.

moondip · 25/02/2026 10:34

It is a lot easier if you have the weight to lose. The calorie deficit required to lose 3lbs for someone who has a lot of weight to lose is obviously less than for someone who doesn’t have all that much to lose/is not even overweight or obese/etc. If you really have it to lose, though, I’d suggest using the app NutraCheck. Calorie counting is as worthwhile as everyone says it is. You can’t possibly know how to create the calorie deficit you need to lose weight without knowing as precisely as possible what you’re eating in calories vs. burning in exercise. Good luck!

VimesandhisCardboardBoots · 25/02/2026 10:43

Appleday11 · 24/02/2026 22:07

Second point. I find that i get so hungry that i find it hard to get into a calorie deficit.

If you managed it, how did you do it please

You just have to ignore the hunger. For me, it was about reframing what hunger meant for me as a sensation. It was always a bad sensation, like pain, that meant I needed to go eat something.

Instead, I started treating it as a good sensation. "Ah, I'm hungry, my diet must be working"

LemonVenom · 25/02/2026 11:02

Intermittent Fasting.

Youtube Dr Jason Fung.

Floatlikeafeather2 · 25/02/2026 11:16

Appleday11 · 24/02/2026 23:42

Yet again, it's not MY claim.

I mentioned that I read an article by medical researchers.

It's their claim.

But the absolute nub of this is that your grandfather was never a pregnant woman. Whatever the article says, it isn't relevant to your argument. My belief is that the link between these women and their children's obesity is more likely to be behavioural, i.e. over feeding and over protecting, both of which are understandable but absolutely nothing to do with genetics.
There's no shame in gracefully conceding that you are wrong. There is in being rude to strangers.

Lmnop22 · 25/02/2026 11:18

Appleday11 · 24/02/2026 22:40

No i dont. What kind of weighing scales do you use?

Also what hot drink do you have in the morning please? I sometimes think its my sachet of powdered coffee that is tipping me over

Also to note that if you want to measure butter for toast or a spread of some sort if you put the whole tub on the scales then take what you’re using out then the difference between the two weights is how much you have eaten. Much more efficient than trying to weight tiny amounts of spread but guessing stuff like that can lead to gross over or under estimations because they’re calorific

mummabubs · 25/02/2026 11:20

Appleday11 · 24/02/2026 23:11

A lot of it is mental too. When we start thinking "ive a lot of weight to lose", we get trapped in panicky spiralling thoughts which make us depressed.

I wish there were more books on how to train the mind when dieting.

If this is what you're after have you looked at Noom? I've used that programme to successfully lose weight and what I found really helpful was all the psychoeducation around eating as well as the nutritional teachings around healthy food choices. It's really helped me to start embedding habits to make healthier choices that actually work for me. (I also like that Noom doesn't view foods as good, bad or off limit, so I've been losing weight while still keeping my weekend glass or two of wine and some chocolate in my daily living!)

adlitem · 25/02/2026 11:21

Your body is designed to preserve mass for the next drought/ period of starvation. It's not realise that the danger actually is abundance. That's why it's so much work, you are essentially working against your own biology.

Lmnop22 · 25/02/2026 11:32

Appleday11 · 24/02/2026 23:04

There have been medical studies on it. Columbia university published a study. It said this

Starving women who gave birth during the famine had children who were unusually susceptible to obesity and other metabolic disorders, as were their grandchildrem

I think this was likely due to the foetal distress caused by having a starving host mother rather than a genetic trait passed down simply because a relative was starved - starving in adulthood doesn’t change your genetic make up.

Rowley456 · 25/02/2026 11:34

SayWibble · 24/02/2026 22:00

Because overeating the wrong things is enjoyable and takes no effort whatsoever.

This

Disturbia81 · 25/02/2026 11:45

I can shock myself with how quickly I can gain weight, think my record was a stone in a few weeks. Some people don’t put that on over a lifetime!
I have to control myself constantly every day to stay a size 10, it’s shit.

Yogaandchocolate · 25/02/2026 12:05

Lmnop22 · 25/02/2026 11:32

I think this was likely due to the foetal distress caused by having a starving host mother rather than a genetic trait passed down simply because a relative was starved - starving in adulthood doesn’t change your genetic make up.

It can potentially cause epigenetic changes rather than changes to the actual DNA coding sequence. See the Dutch study I linked to above where grandchildren of women who were starved during pregnancy were affected

Lmnop22 · 25/02/2026 13:48

Yogaandchocolate · 25/02/2026 12:05

It can potentially cause epigenetic changes rather than changes to the actual DNA coding sequence. See the Dutch study I linked to above where grandchildren of women who were starved during pregnancy were affected

That’s so interesting! I wonder if it could be the same for descendants of starved men or it has to originate during pregnancy

WithTwoGiantBoys · 25/02/2026 14:30

Epigenetics is really interesting and quite a new field.

I've lost over 8st but been thoroughly stuck since last summer going up and down the same few pounds. Have been counting/weighing everything this year and despite being in what should be quite a chunky deficit nothing more is coming off - am wedged at the top end of a healthy BMI range and wanted to lose 10 more lb to give me a bit more wiggle room.

Have decided that after two years of being very focused I cannot face doing it forever so I am going to shift focus to weight training for a while (I currently run 4x a week and don't eat back the calories) and think about eating to gain strength for a while. The scales are doing my head in.

blackpooolrock · 25/02/2026 16:37

Exercise tends to make you hungry and can cause you to eat more. There are many studies, around 70 or so, which show exercise does not cause weight loss. Prof Tim Spector spoke about this is one of his podcasts.

https://www.facebook.com/watch/?v=459380977152186

Exercise is good for things like mood and stuff like that but it does nothing for weight loss.

Watdidusay · 25/02/2026 22:13

Haveyouanyjam · 25/02/2026 09:58

I never said people are overweight because they aren’t eating enough. I said that eating too little can slow your metabolism somewhat a make it harder to lose more weight as we are biologically guarded against becoming underweight.

To be overweight in the first place obviously you must have been consuming more calories than you were burning but that’s not what the conversation is about. It’s about why it can be hard to lose weight.

What are the biological guards and how are these overridden?

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