Carlin Isles“Kate, you are amazing and such a blessing I can't begin to tell you. Thank you so much and so glad I have you in my life!”

Carlin Isles - “The Fastest Man in World Rugby”, Rugby player and US Team sprinter

“Kate is incredibly informative and detailed. For me, the plan has been fantastic both physically and mentally. It's enabled me to make the right food choices, with the result that I'm much less bloated and my waist is smaller. More importantly though, the difference to my emotional wellbeing has been fantastic. I'm less anxious, more balanced and more positive. It literally feels like a cloud has been lifted.”

Sophie Barton, 40, Journalist/Former Closer Magazine Executive Editor, Bath

Anna Williamson“I have to say my initial scepticism has been proved wrong. I don't like "diets" but this is more a lifestyle plan (works out your DNA and genetic food intolerances) which I have to say has had some great results, not only have I lost a dress size of my baby bulge. but my hormones and mood swings have calmed down, and my overall mental, emotional and physical health feels on an even keel. I wanted to sort out my sluggishness and bad diet and this seemed worth a crack. I can tell you - it is!”

Anna Williamson, TV Presenter

“Hi Kate, just wanted to give you a progress update. I've completed 3 weeks of the plan and have lost 14 pounds. Am restarting phase 1 again today and plan to continue until I lose the baby weight I put on. Not sure if I will continue to lose weight at this rate but am very pleased with the results so far!”

R Minhas, 43, London

“I am 10 weeks into the plan and I am already at my goal weight (lost 16 lbs) but I am carrying on as am sleeping so much better and have way more energy. Best I have felt for a long time.”

M Panton, 31, Data Analyst, London

“We have worked for years with nutritionist Kate Llewellyn-Waters and she has kindly let us release this amazing new DNA based weight management program to our clients. I can’t wait to receive my results and get started on the plan!”

S Laciofano, 30, Owner of The Cobham Clinic, Cobham, Surrey

Nuria“My main reason for going on the plan was that I’ve suffered from Irritable Bowel Syndrome (IBS) since I was a teenager so I wanted to find a way of eating that helped reduce the symptoms, as well as make me feel more confident and energised. I don’t own a set of scales but I definitely felt my stomach getting flatter after the first two days, and general bloat around the mid-section and thighs disappearing. Also, my IBS symptoms (bloating, sluggishness etc.) have pretty much gone, which is great!”

N Stylianou, 34, Journalist, London

“Even though this is not a quick fix "diet" I have lost an inch off my waist in the first week on Phase 1 and 6lbs! I don’t even feel deprived at all. I am looking forward to seeing the results of 6 weeks on the plan.”

T Rossi, 53, Health Worker, London

“I feel alive on this plan and total energised. Am 4 weeks in and I have already lost the last 9lbs I couldn’t budge and I am sleeping better, which is a major relief.”

S Law, 38, Dental Nurse, London

“I went on the plan after seeing the review in The Evening Standard where the journalist had her IBS improve. I have IBS for 12 years and nothing has worked until now. I think all I can put it down to is that I am eating right for my genes. I think everyone would benefit from eating based on their genes. Have recommended to lots of people. Thank you The What IF Plan – the plan has helped me so much.”

R Peters, 57, Civil Service, London

“Through her immense knowledge, Kate has set me on the right track to feeling healthy as well as losing weight. This is not a fad diet. This is a way of life, it is understanding how and what you should be eating most of the time if not all the time. I definitely feel much more energetic, healthier as well as lighter. Kate herself radiates health and energy which I find is a positive reflection on this plan. I have definitely seen and felt the benefits, enough that I have already recommended it to my husband as well as friends.”

GF, 55, Home-maker, Richmond-upon-Thames, London

“I have lost 4kg in 2 months on this plan and it has been so straightforward – I actually haven’t felt like I even tried to!”

P Morgan, 42, Investment Banker, London

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