That depends on many factors including how much you currently weigh, how many calories you eat per day after becoming vegan, and how many calories you expend per day after becoming vegan.
You certainly could lose weight on a vegan diet if you choose to, but going vegan won't guarantee that you will lose weight. You can still over eat even if everything you are eating is vegan.
Most likely
The healthiest way to lose weight is to be on a sensible diet and exercise program. A doctor can help to decide what diet is appropriate for you and your health.
They lose weight and get sick less!
It depends on what you eat. Purely becoming Vegan does not ensure weight loss. In order to lose weight, you will need to burn more calories than you consume in a day, so even if you eat Vegan, you could still be eating unhealthy food. Here is a link to a "skinny" Vegan diet that should be able to help you lose weight. http://www.webmd.com/diet/features/skinny-diet-not-big-on-meatw-sweets
Keeping weight on is a challenge for vegans--I personally have never seen a fat one (perhaps they do exist, however).
Exercise
Fourteen months. It took Spurlock fourteen months to lose the weight gained from his experiment.
The vegan diet plan means that you aren't going to eat or drink anything that has to do with animals such as meat, eggs, or cheese. You can lose some weight this way.
Eating a vegan diet can help with weight loss, as long as it is balanced and appropriately portioned. Vegan diets tend to be lower in calories and saturated fat than diets that include animal products. They are also high in fiber, which can help to keep you feeling full for longer, and may help to promote weight loss by reducing appetite.One of the key things to keep in mind when following a vegan diet for weight loss is to be mindful of portion sizes, as well as the types of foods you are consuming. My recommendation: 𝒉𝒕𝒕𝒑𝒔://𝒘𝒘𝒘.𝒅𝒊𝒈𝒊𝒔𝒕𝒐𝒓𝒆24.𝒄𝒐𝒎/𝒓𝒆𝒅𝒊𝒓/443631/𝑫𝒐𝒏𝒕𝒎𝒆𝒊/
it does not help lose weight but it helps your skin to become softer
It depends on what you eat. If you ate nothing but vegetables and no fat or carbs, you will lose weight because vegetables are very low in calories. If you do not lose weight, you are consuming higher calorie foods.