What are FAD diets? Do they really help in weight loss?

Fad diets are popular but lack scientific evidence. They promise rapid weight loss and often exclude certain foods or nutrients. These diets can be hard to maintain and may lead to weight regain. They can also cause nutrient deficiencies and an unhealthy relationship with food. To balance your diet, consume a variety of foods from different groups, pay attention to portion sizes, include protein sources, opt for whole grains, eat fruits and vegetables.