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How to Eat

Most diets fail because they rely on willpower alone. In this book surgeon and expert on metabolism Dr Andrew Jenkinson shows you how to unlock the secret to lasting weight loss through a better understanding of your brain, body and environment, allowing you to eat well and lose weight, forever.

Using a combination of cutting-edge metabolic science, together with strategies like aversion, habit creation and mental reprogramming, expert in the science of appetite Dr Andrew Jenkinson will show you how your body and brain work when it comes to what you eat, and how to arm yourself against the malicious presence of food marketing, junk food and the harmful effects of the Western diet.

You will learn:
· Why exercise is of secondary importance to energy balance
· How we can learn to 'crave surf', being more mindful of hunger cravings when they arise
· How junk foods affect our brains, influencing our behaviour and creating bad habits
· How to maintain a good metabolic rate when losing weight
· The science behind popular weight loss techniques and why they work, including hot water and lemon; raw foods; time restricted eating; keto diets and high intensity training

Filled with science-backed tips and techniques, this book will help you implement lasting changes, eat well and feel good.

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Published January 4, 2024

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Andrew Jenkinson

54 books36 followers

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5 stars
105 (32%)
4 stars
117 (36%)
3 stars
74 (23%)
2 stars
20 (6%)
1 star
3 (<1%)
Displaying 1 - 30 of 40 reviews
27 reviews
April 24, 2025
Most of the content in this book is very similar to the previous book in the series and found myself skipping large parts. Would be a good read if you haven’t read the first book!
Profile Image for Grace Evans.
17 reviews
June 15, 2024
Read as part of a book deal with mom so she has to read The Authority Gap. I did find the explanation of the hormones helpful but did think it lacked sufficient evidence about the impact processed foods are having.
Profile Image for Rosemary.
2,294 reviews102 followers
January 18, 2025
This was really interesting about insulin reactions and how the body is burdened and misled by the sugar, additives and oils that we eat in such great quantities these days.

I have always wondered about fructose, why it is supposed to be bad for us and yet it's in fruit. The answer seems to be that fruit is seasonal and is harvested at a time when we need extra weight to see us through the winter. If we eat tons of fruit all the year round, or especially if we eat manufactured foods where fructose has been isolated from the other elements in fruit to be used as a sweetener, it will make us gain weight.

Like many health writers he indulges his personal preferences now and then (why Comté cheese and not any other kind?) and the recipes at the end are not really needed, but they don't do any harm.
2 reviews
February 14, 2026
I enjoyed his explanation of the interplay of the hormones 'leptin resistance', and his use of analogies describing the baseline weight as like an anchor.
Profile Image for Triin.
194 reviews3 followers
February 15, 2024
I wish he had more books. The way they are written and read just makes you wish they didn’t end so soon. His knowledge about diet culture and food is so refreshing. He backs up his statements with facts.
He makes it easy to be more aware of the food culture we live in. He explains how food industry is out to fail people. He explains how all short-term solutions like various diets such as keto diets and calorie counting move your weight set point so losing weight or staying in healthy weight range will be harder in the future and will require more effort, more conscious tries. If you follow his ideas and are just more mindful and knowledgeable about food, you will not mess up your set point and staying in good weight range comes without any further effort

He is qualified doctor and surgeon, he has done many gastric sleeve operations and practiced in various countries. Before you fall into the rabbit hole of calorie counting, encouraged by people who have no degree in nutrition, give this book a go.
Profile Image for GemsLiteraryGems.
344 reviews5 followers
January 9, 2024
Informative guide to cutting ultra processed food from your diet, why you should and why the food industry doesn’t want you to. I only wish he’d not repeatedly talked about plants “breathing” as we teach high schoolers that this is incorrect right from year 7! As a biologist, there was still lots to learn but the science is explained in a simple enough way to make it accessible to all. Read it if you’re wanting to improve the quality of your diet, even if you’re not trying to lose weight! If you’re trying to lose weight, the (non-gory but still graphic enough) description of bariatric surgery is enough to make you rethink what you’re doing. I’ll certainly be hunting down his other book on the science of food.
Profile Image for Gabriella Georgieva.
47 reviews
August 23, 2026
This book could've been an email 🥴

The good parts: his personal stories were interesting, the cooking advice at the end was extremely helpful to understand further how to eat healthy.

The bad: I almost DNFed the book at the first mention how ADHD is caused by the food we eat - absolutely the fuck not. The food you eat can absolutely 100% make your symptoms better or worse, it can also influence neurotypical brains to behave similarly to ADHD brains, but you're either born with it or not, you cannot develop it down the line. I absolutely despise people who tell me that red 40 dye causes ADHD and autism 🙄

Further more if I haven't read his first book on the matter ["Why we eat (too much)] and belief in the science and evidence he presented there, I wouldn't have believed in one word he said/written in this one.

The other thing that I didn't like is the fact that literally half of the book is the exact information of the first book, chewed up and spit out into a smaller form.

Summary: Pulses and beans are not to be avoided - they're full of protein, fiber and a very good ratio of omega 3:6.
Vegetables and specifically leafy greens are full of antioxidants, anti-inflammatory compounds and have an amazing omega 3:6 ratio.
Poultry is to be avoided, because it's always grain-fed and because of that contains a very high amount of omega 6 (and a very low amount of omega 3). The same goes for egg yolk, so it should be avoided, but egg whites are okay; chicken supplemented with flax seeds or fish oil are way better (considering the omega ratio).
Bulgur, buckwheat and couscous are perfect substitute for refined carbs. Wild and brown rice are to be preferred instead of white rice.
67 reviews
March 14, 2025
I enjoyed his first book much more but that is because I enjoy reading about the scientific theories underlying dietary advice. This book feels much more practical and would be the one book I would recommend to someone as an introduction to this area of research and on healthy eating habits.

So a lot of the evidential information is instead replaced with advice on what to eat to the point there is even a chapter of recipes. It does not add much new information from the previous book but still an enjoyable read and I sped through the text.

I can understand why this is the approach taken and that this book will appeal to a wider audience. However, I would have preferred more discussion on the reasoning behind sone of his recommendations. For example, he is very withering about protein shakes without much reasoning bar the fact they are processed (yet, elsewhere highlights that processing in of itself is not always a bad thing).

However, that does not stop me giving it five stars and looking forward to his next release.
Profile Image for JA&#x1f31d;.
21 reviews
April 13, 2026
This was a very informative book that I think everybody should read. The book covers topics from many different angles to reach a very wide audience. When I look back at my past eating habits, I now feel like I was a blind and delusional person, thinking certain foods were healthy when they were actually very processed. It explains a lot about why I’ve always struggled to lose weight. I’ve now learnt so much and feel inspired to make changes to my food habits, whether that leads to weight loss or not. I’ve made myself a list of ultra-processed/harmful ingredients with my shopping list on my notes app, and I’ve deleted a lot of ultra-processed items off my shopping apps and replaced them with better alternatives. There’s so much I also learnt about meats and other seemingly healthy natural foods that we eat, and even if some changes in those areas might be difficult to make, I feel I can now make more informed decisions about what I eat and how much.
Profile Image for Nazza Ahmed.
31 reviews
May 1, 2024
very good book although not too dissimilar to the previous book on “why we eat too much” and despite the title not many tips on “how to eat” I understand the hesitancy to be prescriptive when it comes to nutrition but people are time and cash poor, leading busy lives in a cost of living crisis, nudge economics works, the title could have been reflected better in the book’s contents, that said, it’s still a great capture on nutrition which picks up recent discourse around ultra-processed food, the part on having a futuristic ultra-processed food kitchen was very good, really underscores how bonkers our lack of understanding and inquisitiveness around the food that so many of us eat several times a day all week are really damaging our bodies and minds if eaten in the high quantities that we are
Profile Image for Mattie.
484 reviews54 followers
February 27, 2025
Part one explains the biological processes that cause and perpetuate obesity. Jenkinson presents the science in an engaging and readable way that is accessible to many readers.

However, I found parts two and three much less interesting and relevant. I'm really not sure why there is a chapter on identity; it felt very out of place. Parts two and three feel like the author, a medical doctor, is stepping out of his lane to give advice on habit forming, making lifestyle changes and kitchen utensils. There's a stark loss of authority and reliability in the latter parts compared to the first part, which is rooted in science.

I thought the whole book lacked evidence about the impact of ultra-processed foods. I expected almost every claim to be backed up with studies or research, but that was the exception.
Profile Image for Rory.
402 reviews
December 13, 2025
I found this book hard going and I tried it several times before I finally listened all the way through (audio book).
There are too many personal stories for me and not enough content.

The surgery was too graphic for me but I can see why he used it as an example. He said that people had asked him to make his suggestions clearer in his next book (this one) of what to do. But I feel he didn't achieve that at all. Cutting out sugar was only a part of what he has suggested lately on a podcast I heard him on.
I feel the book was good describing insulin and leptin, but not much else.

It's a shame. Cos on the recent podcast he had loads of valuable information and really seemed to understand his clients. I am going to follow his podcast suggestions and see if they work for me.
Profile Image for Arno.
26 reviews2 followers
July 16, 2024
Why is this a book?
I dont blame the author. He displays thorough knowledge and passion on the topic of food and healthy eating.
I blame the publishing company for allowing what could have been an article to become a book. This is evident in the repetition of ideas, literally paragraphs apart. It seems a lot like fluff or filler material to reach a minimum page count. Worse might be that it was simply lazy editing. Let’s hope not.
And imagine my surprise when I realised that the last few chapters of the book compiles a few cooking instructions. Oh jeez, I cannot even finish the review. It’s beyond obvious that it’s a waste of your valuable time.
Profile Image for Podge.
80 reviews
April 6, 2025
AJ book has been helpful in explaining why hunger overrides the bodies control system and has an excellent chapter at the end for recipes which I am certainly going to use. This will be a helpful book in the future for sure. I may buy his previous book as well.
I did think it was a bit short to be honest and seemed really to revolve only around Leptin and Insulin resistance and was filled out a bit but the key is does it help me in the future to control sugar intake ....fat intake etc which can be issue. We will reread aspects and use the book and see if 3 stars is a bit hard. It's nicely written easy to get through and the author is clearly a thoughtful man.
Profile Image for Jacinta179.
49 reviews
November 27, 2025
An easy to read summary of current theory around obesity. Very helpful about the roll of insulin insensitivity. The section on behaviour change and identity was also a good summary of current theory and practice. Easy two day read. Back to the public library it goes.
Three stars for the summary and I do find it valuable to be constantly rereading and being reminded of this material as it is a difficult task to change eating habits in a market place that is determined make a profit rather than to support health.
37 reviews
December 27, 2024
A new way to approach diet

Fascinating facts about the effects of certain foodstuffs (particularly processed food ingredients) on the body’s receptors. I’ve always suspected that the body had a way of returning to the weight it ‘wants’ to be and this book confirms that and explains how it happens. Clear, scientific explanations and sensible ideas for making changes.
5 reviews
Read
January 12, 2026
The author achieves a lot of thought provoking mythbusting about nutrition in this book. The basic premise is to try to redress the balance of Omega 3 to Omega 6 fatty acids in order to improve health and to indirectly help to lower your body’s weight set point. I found it to be a very informative read, particularly its thorough explanations of nutrition, digestion and metabolism.
Profile Image for Jackie Richards.
167 reviews
May 20, 2026
I read Why we Eat (too much) and this is his 2nd book. This book is a much easier read and also covers the main principles of the first book.
Some of it was quite basic and I was a bit disappointed with the recipes at the end - I wanted a bit more ‘and here is how to’ . Having said that, this book is a must for anyone still calorie counting! Highly recommend.
24 reviews1 follower
August 10, 2026
I can’t say I learnt much more than I did with Dr Andrew Jenkinsons first book, which was an eye opener for me, however I did leave with some new found motivation and nuggets to break bad habits and to change my lifestyle. However a lot of it felt repetitive of the first book. I guess because the author does have the preface the lifestyle advice they are giving.
Profile Image for Char .
48 reviews1 follower
September 8, 2024
DNF at 30%
This book has told me that basically all food and everything that goes into food will cause cancer or make you neurodivergent (I mean, come on!)

I did not learn how to eat and still lose weight as the title says.
I just became worried about everything I was eating!
Profile Image for Suzi.
Author 20 books12 followers
September 4, 2025
this was one of those, it gives you the science but was very poor on the balance.

I feel like I already knew everything in this book but somehow, it made me not want to do it (even though I already am and have even for a year) because of the preachy tone.
8 reviews
April 7, 2024
Absorbed this book within a week and it has greatly challenged my thinking for the better. Well written, highly informative and life changing.
Profile Image for Yama Chen.
236 reviews9 followers
April 8, 2024
It begins well, but becomes very out of topic in the end.
Profile Image for Emily Walker.
17 reviews
June 2, 2024
Wonderful book which really opened my eyes on my diet and where all the automatic thinking came from
15 reviews
June 19, 2024
Very informative book, particularly regarding the effects of eating processed foods, and also understanding how the body loses, gains, and more significantly, maintains weight.
Profile Image for C..
71 reviews6 followers
October 23, 2024
收穫非常豐富!一開始超加工食品的介紹彷彿在讀驚悚小說,不得不說,作者的確改變我對超加工食品的看法(大驚)。正好這幾天身體不適,嘗試三餐儘量多天然食物,可能是心理作用(作者說要吃正確食物長達一年才會發生變化XD),覺得身體似乎清爽了起來。推薦所有人跟我一起被超加工食品驚嚇!
Profile Image for Harrison Large ラージ • ハリソン.
265 reviews9 followers
December 4, 2024
An excellent book about breaking the UPF habits that anyone whose watching their diet should read. Complements a lot of research into UPF I've been reading lately so I imagine it's very accurate.
Displaying 1 - 30 of 40 reviews