Tips for Gaining Weight Safely and Things to Avoid Being underweight can cause health problems, so some people may need to gain weight. Tips for safe weight gain include slowly increasing calories with nutritious foods and weight training. While obesity is becoming a significant public health risk, being underweight can also cause health problems. However, there are still many myths about the correct methods for putting on weight safely. Some weight gain methods can have severe short- and long-term effects on health. This poses a challenge for people needing to gain weight and for those at a moderate weight but wish to build muscle. A doctor can advise people who wish to gain weight, ensuring they do so safely. This article provides tips for gaining weight safely and healthily, including what to avoid while trying to put on weight. Putting on weight may be necessary for someone with underweight. It may also be a measurable goal for those aiming to build muscle. In general, consuming more calories than the body burns will result in weight gain. The calorie intake necessary to achieve this will vary from person to person. According to the United Kingdom’s National Health Service (NHS), adults can try adding 300 to 500 calories to their typical daily intake to help facilitate healthy weight gain. However, many people inaccurately estimate the number of daily calories they consume. Therefore, they may want to track their daily calorie intake over 2 to 3 weeks so they can understand how to adjust their diet to gain weight at a sufficient pace. Read about how to count calories for weight loss or muscle gain.