Article: Certain medications and conditions can make it hard to gain weight. If this is the case, make sure you’re treating your medical condition. Talk to your doctor to find the right options for you. If you have lost a significant amount of weight without explanation, see your doctor to make sure that you do not have an underlying condition, such as a thyroid or digestive disorder. A registered dietitian can help you design meal plans to help you reach your weight goals in a healthy manner. They can also provide advice about exercising or stimulating your appetite. Ask your doctor to refer you to a registered dietitian. Smoking suppresses your appetite and can affect your sense of taste and smell. Talk to your doctor to discuss strategies for quitting smoking. Your doctor may be able to prescribe a path or pill to help you quit. If you cannot quit smoking, try to avoid smoking for an hour or 2 before you eat a meal. While not the fastest option, strength training is a good idea if you want to keep weight on long-term. Exercise is a good way to whet your appetite. Strength training, in particular, is especially good because it allows you to gain weight by building your muscles.   Weight training is a great place to start. You can also do body weight exercises like yoga or Pilates. Avoid too much cardio or aerobic exercise, as they may prevent you from gaining weight. Eating extra protein is especially important if you plan to build muscle mass through exercise. Good strength training exercises include squats, deadlifts, overhead presses, bench presses, barbell rows, dips, chin-ups, crunches, bicep curls, leg presses, and leg curls.

What is a summary?
Treat any underlying medical conditions. Talk to a registered dietitian. Quit smoking. Start strength training to build muscle.