Dieters will eliminate foods that cause the body to produce acids, which are harmful such as meat, wheat, refined sugar and processed foods.
So, in the opinion of the proponents of the above diet, certain foods make your body more alkaline for weight loss and disease prevention. The alkaline diet became a craze when Victoria Beckham shared this recipe cookbook in 2013.

Food you can and can’t eat
According to Webmd , most fruits, vegetables, beans, tofu, and some nuts are alkaline-promoting foods.
Milk, eggs, meat, most grains and processed foods such as canned and packaged snacks and convenience foods are in the acid group and are not allowed.
Most books on the alkaline diet recommend against drinking alcohol or caffeine-containing foods like coffee.
As such, you will have to eliminate many familiar foods. However, the above method does not require exercise. Vegetarians also easily adopt this diet.
Besides wheat, the alkaline diet eliminates most other major food allergens, including dairy, eggs, peanuts, walnuts, fish, and shellfish. This way of eating is also good for people who are trying to avoid fat and sugar.
Effective
The pH level measures how acidic or alkaline something is. A pH of 0 is absolute acidity, while a pH of 14 is absolute alkalinity. A pH of 7 is neutral. Your blood is slightly alkaline, with a pH between 7.35 and 7.45. Your stomach is very acidic, with a pH of 3.5 or less, so it can break down food. The alkaline diet is said to help the body maintain the pH level in the blood.
The foods you eat in the above diet will support healthy weight loss: lots of vegetables and enough water. Avoiding sugar, alcohol and processed foods is also good for the body.

There is some initial evidence that a diet low in acid-forming foods such as animal protein (meat, cheese), bread; More fruits and vegetables can prevent kidney stones, keep bones and muscles strong, improve heart health and brain function, reduce low back pain, and reduce the risk of type 2 diabetes.
Analyzes have found an alkaline environment has the potential to make certain chemotherapy drugs more effective or less toxic. But there is no solid evidence that an alkaline diet can do this or prevent cancer. If you have cancer, talk to your doctor or dietitian before starting any diet.
Difficult
Focusing on vegetables is at the core of an alkaline diet for healthy weight loss. There are no other special requirements.
However, adopting an alkaline diet is still difficult for many people.
Many of the foods that are allowed in moderation on other diets (including lean meats, low-fat dairy, breads, and sweets) are prohibited. Protein is limited to plant sources like beans and tofu. This means you’ll have to work harder to make sure you’re getting enough protein and calcium.
If you travel a lot or have a busy schedule, you may find it difficult to choose and prepare food.
In the end, the alkaline diet doesn’t have the key to weight loss and wellness success: exercise. You should include exercise in any healthy eating plan you choose. The American Heart Association recommends that people exercise for at least 150 minutes per week.