Bitter gourd can lose weight, but the effect of eating only one vegetable is not obvious.
I suggest you exercise moderately and eat a little. Usually eat more corn, coix seed, celery, cucumber, mugwort, spinach, cabbage, radish, lettuce, cauliflower, banana and so on. These are all conducive to losing weight.
I'll tell you some more flower and fruit tea, which has the effect of losing weight and caring skin. Trollius chinensis, rose, honey, Pu 'er tea, chrysanthemum, lemon, dandelion, Luoshen flower, mint and honeysuckle all have the effect of losing weight. You can drink both at will.
I hope I can help you!