Studies have demonstrated that formulas, which have very high levels of vitamins, significantly promote infant weight gain, especially fat mass gain, a known risk factor for children developing obesity., WebMD explains why taking too many vitamins can be unhealthy and even dangerous, and how to be sure you’re getting the right amount of vitamins and minerals., "It is possible that excess vitamins, especially B vitamins, may contribute to the development of obesity. "Vitamin-rich formulas and food fortification with vitamins may, to a large extent,, As seen above, vitamins can lead to weight gain. This happens when higher amounts of vitamins are consumed. But some are more likely to contribute to weight gain than others. Below is the rundown of vitamins that may contribute to putting on a few pounds. 1. Vitamin A is a fat-soluble vitamin involved in a wide range of functions., Deficiencies in certain vitamins may lead to conditions that can cause weight gain, such as hypothyroidism or insulin resistance. However, taking too much of any vitamin supplement can also lead to negative health outcomes, including weight gain., The short answer is, no. Vitamins alone do not contribute to weight gain. In fact, vitamins do not have the calories needed for weight gain. In this article, we are going to dive into the question “Can I take vitamins to gain weight?” And we will discuss how you can successfuuly gain weight. Are You Having Trouble Gaining Weight?.