All the raw vegans I see down at the co-op are eating as if they are totally starved. I swear they have a way of eating that's intense. Most people feel great on a raw vegan diet at first because their body is enjoying the rich saturated fat of their own adipose tissue. It is nearly impossible to eat enough on a raw vegan diet. Take a look at this:
The Calorie Paradox of Raw Veganism
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 160 x 2