Double calories on vegetarian diet?

You would gain weight. As a holistic nutritionist I always recommend people eat whole natural foods however interestingly when you are getting the nutrients you need from nutrient dense food you actual need less calories and food. Your body needs enough fuel to run and the nutrients to feed it including amino acids which can be lacking in a vegetarian diet if you don't know how to combine your grains with your legumes. Nuts in particular are very high in calories, and a serving is considered like 12 almonds. Hope this helps

in health,

Amanda