You can eat onions during weight loss, but you need to eat them in moderation. Onions are a common ingredient in daily life, and eating onions in moderation during weight loss usually does not affect weight loss. Each 100 grams of onion contains 176 kilojoules of energy, 89.2 grams of water, 9.34 grams of carbohydrates, 1.1 grams of protein, 147 milligrams of potassium and other nutrients, proper consumption during the weight loss period can be supplemented with nutrients needed by the body. However, during the weight loss period, you should also pay attention to the way onions are cooked, do not use too much oil, and do not over-salted. It is recommended not to consume onions in excess, so as not to cause gastrointestinal discomfort, such as abdominal pain, bloating and other manifestations. Excessive consumption of onions can also lead to weight gain when the calorie intake is greater than the calories consumed. People who are allergic to onions should not eat onions to avoid triggering allergies. During the weight loss period in the diet as light as possible, as much as possible to participate in physical exercise, in order to accelerate the consumption of body fat.