1. The 20/20 Diet
On this diet, there are four phases in which the foods you eat are at first restricted but then gradually increased, starting with a limit of 20 specified foods in phase 1. You eat four meals a day four hours apart.
2. The 5:2 Diet (also known as the 2 Day Diet)
A diet that involves eating normally for 5 days of a week but restricting calories on the other 2 (non-consecutive) days.
3. The Alkaline Diet
This diet involves cutting back on acid-producing foods such as meat, grains, refined sugar, dairy products, caffeine, alcohol and processed foods and eating more alkaline foods.
4. The Atkins Diet
A carbohydrate-restricting diet with 3 phases where carbs are gradually increased.
5. The Alternate Day Fasting Diet
On this diet, food is either avoided completely on alternate days or restricted to a 500 or 600 calorie intake on alternate days.
6. The Baby Food Diet
This involves replacing one or two meals or snacks a day with baby food to control calories and ensure healthy nutritional intake.
7. The Best Life Diet Plan
A 3-phase diet and exercise plan that involves removing six ‘problem foods’ from your diet and focusing on portion control and reduction of trans fats, sodium and added sugar.
8. The Beverly Hills Diet
Based upon the premise that eating certain fruits leads to chemical reactions that enhance weight loss, this diet strictly controls what is eaten in each phase, beginning with specific fruits and gradually adding other foods.
9. The Biggest Loser Diet
Based on the eating plan used by contestants on the TV show of the same name, this diet advocates small, frequent meals mainly consisting of lean protein, low-fat dairy or soy, and fruits, vegetables, wholegrains, beans and nuts.
10. The Body for Life Program
This is a 12 week nutrition and exercise program that includes one free days a week and involves eating 6 small meals a day, each containing one portion of carbohydrate and one portion of protein.
11. The Brown Fat Revolution Diet
Part of a nutrition and exercise plan that emphasizes portion control, small regular meals and unprocessed foods. You switch between ‘carb days’ and ‘protein days’ and have a free day every week, turning unhealthy yellow fat into healthy brown fat.
12. The Cabbage Soup Diet
An extremely low-fat, high-fibre, seven-day diet on which most meals are fat-free cabbage soup alongside other allowed foods that vary each day.
13. The Calorie Counting Diet
This diet requires followers to stay within a target number of calories each day to hit a weight loss or weight maintenance goal and divides foods into groups to promote a balanced diet.
14. The Cambridge Diet (Now known as the Cambridge Weight Plan or 1:1 Diet)
A very low-calorie, meal replacement diet plan designed for rapid, drastic weight loss, which can only be followed for 12 weeks.
15. The Cookie Diet
There are several versions of this diet, including the Hollywood Cookie Diet and the Smart for Life Cookie Diet, but all involve eating commercially-produced meal replacement cookies, either with or without a proper meal at some point during the day.
16. The DASH Diet (Dietary Approaches to Stop Hypertension)
Originally devised to lower blood pressure, this diet focuses on low-sodium, low-fat and low-sugar foods high in potassium, magnesium and calcium.
17. The Dukan Diet
A low-carb, high-protein diet with four phases and no restriction on quantity.
18. The Eat This, Not That Diet
An extensive list of approved, lower-calorie foods and restaurant meals that you can swap for less healthy versions form the basis of this diet.
19. The Eat to Live Plan
A 6-week vegan, low-salt, low-fat, gluten-free plan that encourages the eating of nutritious, unprocessed foods that give a feeling of fullness.
20. The Gene Smart Diet
Based on the idea that modern diets aren’t suitable for our genetic make-up and cause inflammation and weight gain, this diet reduces calories and increases the intake of fibre, polyphenols and onega-3 fatty acids.
21. The Hormone Diet
Based on the idea that hormonal imbalances are behind weight gain, this diet starts with a two-week detox and then continues with a ‘Glyci-Med’ plan—a combination of Mediterranean Diet and Low GI diet principles.
22. Dr Kushner’s Personality-Type Diet
This plan aims to first establish what a person’s unhealthy eating habits are and what lies behind them, before giving them tailored advice on how to overcome their personal healthy eating challenges and what to eat.
23. Dr Oz’s Ultimate Diet
This diet emphasizes lean proteins, whole grains and more fruit and vegetables, while encouraging you to follow the Rule of 5 (avoiding foods where sugars, syrups, white flours, saturated fats and trans fats are in the first five ingredients listed).
24. The F Plan Diet
A high-fibre diet that also restricts daily calories to 1,500.
25. The Grapefruit Diet
A high-protein, 12-day diet that restricts calories and advocates consuming grapefruit or grapefruit juice at every meal.
26. The Hacker’s Diet
A calorie-control diet that involves careful monitoring of calories consumed and used.
27. The Hay Diet (also known as the Food-Combining Diet)
This diet divides foods into acidic, neutral and alkaline groupings and dictates how these groups should be combined for health and weight loss.
28. The Jenny Craig Diet
This plan provides pre-packaged, low calorie versions of popular foods that you select with a consultant.
29. The Juice Fast
Also known as juice cleansing, this diet eliminates solid food and followers consume only fruit and vegetable juices.
30. The Keto (Ketogenic) Diet
A high-fat, low-carb diet originally designed for epileptics, which aims to bring about ketosis (fat burning for energy) by starving your body of its usual primary energy source (carbs).
31. The Lighter Life Diet
There are three different Lighter Life plans which all combine a very low-calorie diet (VLCD) with weekly counselling.
32. The Low GI Diet
This diet involves swapping high-GI foods for low-GI alternatives that give a feeling of fullness and help stabilise sugar levels.
33. The Mediterranean Diet
This diet is high in vegetables, fruits, legumes, nuts, beans, grains, fish, and unsaturated fats and low in meat and dairy.
34. The Monotrophic Diet
On this diet, only one food item or one type of food is eaten for a certain period of time.
35. The Newcastle Diet
An eight-week very low-calorie diet where 600 calories a day are from meal replacement shakes and 200 calories from vegetables.
36. The Noom Weight Loss Program
This involves logging food on an app and making healthy eating choices with the help of a Noom coach.
37. The Nutrisystem Diet
This is a high-protein, high-fibre, low fat meal replacement plan.
38. The O2 Diet
This 32-day, four-phase plan focuses on foods with a high ORAC score (‘oxygen radical absorbance capacity’, which indicates how rich a food is in antioxidants).
39. The Optifast Diet
A 6-12 month diet of three phases, beginning with an Intensive Level that involves total diet replacement providing up to 800 calories daily.
40. The Ornish Lifestyle Medicine Diet
The focus of this diet is on natural, non-processed foods, ‘good’ fats, carbs and proteins, and small, frequent meals.
41. The New Somona Diet
This three-phase diet plan emphasises nutrient-dense ‘power-foods and portion control.
42. The Paleo Diet
This high-protein, low-carb diet is based on the supposed eating habits of Palaeolithic hunter-gatherers.
43. The Park Avenue Diet
A 6-week, three-phase plan that focuses on fruit, vegetables and lean protein while restricting dairy, sweets and fats.
44. The Perricone Diet
This diet promises great skin and increases intake of foods rich in antioxidants and omega-3 fatty acids while eliminating a long list of dairy and carb-based foods.
45. The Protein Power Diet
A high-protein, low-carb, high-fibre eating plan.
46. The Raw Food Diet
On this diet, three-quarters of the food consumed is raw and the emphasis is on eating natural, preferably organic foods and avoiding processed foods.
47. The Rice Diet
A three-phase calorie-restriction diet that drastically reduces intake of calories, salt, fat and sugar.
48. The Rosemary Conley Diet
A programme that combines exercise with a low-fat, low-GI diet, focused predominantly on foods with less than 5% fat.
49. The SlimFast Diet
This is a low-calorie meal-replacement plan that replaces two meals a day with SlimFast products.
50. The Slimming World Diet
This diet encourages swapping high-fat foods for naturally filling, low-fat, low-energy foods.
51. The South Beach Diet
The South Beach Diet is a low-glycaemic index (GI) diet with three phases and no calorie-counting.
52. The Special K Diet
This is a 14-day program that involves replacing two meals a day with a bowl of Special K cereal and low-fat milk or Special K products.
53. The Spectrum Diet
On this diet, foods are put into five groups ranked from healthiest (group 1) to most indulgent (group 5). How much food you’re allowed to eat from each group depends upon your goal.
54. The Sugar-Free Diet
A plan that involves avoiding most types of sugar, particularly ‘free’ sugars (e.g. added sugars or those released from sugary foods, such as fruit, by juicing).
55. The Three Hour Diet
Followers of this plan eat a small, calorie-restricted meal every three hours, based on the idea that this keeps their metabolism running fast.
56. The TLC (Therapeutic Lifestyle Changes) Diet
A diet that focuses on foods that are low in natural cholesterol and saturated fat but high in healthy fats.
57. The UltraMetabolism Diet
This three-phase diet claims to make your genes boost your metabolism by eating healthy foods and gradually cuts out processed foods, wheat and dairy.
58. The Volumetrics Diet
Focusing on low-energy-density foods that are filling but low-calorie, this diet divides food into four groups, from those that can be eaten freely to those that must only be eaten sparingly.
59. The Whole30 Diet
A 30-day diet that emphasises whole foods and eliminates sugar, alcohol, grains, legumes, soy, and dairy.
60. The Wild Diet
This low-carb, high-fat diet avoids processed carbs, encourages eating when hungry and focuses on eating natural, high-quality wholefoods.
61. The Zone Diet
This involves dividing calorie intake from carbohydrates, proteins and fats using a 40:30:30 ratio.