How many veggie straws you should eat depends on your age, activity level and dietary needs. Generally speaking, children ages 1-3 should consume about 1/4 cup of vegetables daily, while adults should aim for about 1 cup of vegetables a day. Veggie straws are a great snack but keep in mind that consuming too many could lead to unhealthy weight gain. You should keep track of how many veggie straws you eat each day and aim for moderation.