Visible ribs often make you look very thin, so it's natural to want to beef up this part of your torso when you're trying to gain weight. You can't dictate where your body puts on pounds, however. Healthy weight gain will fill you out proportionally, according to your genetic body shape.

When children don't eat enough calories, they fail to thrive energetically and physically. They may not meet growth markers, and if they have a serious illness, they may have trouble bolstering their immune system and living a healthy lifestyle.

Most medications prescribed for depression can cause weight gain, according to the Mayo Clinic. Antidepressants that are more likely to cause weight gain than others include tricyclic antidepressants, paroxetine, mirtazapine, trazodone and monoamine oxidase inhibitors, or MAOIs.

A healthy pregnancy increases the odds of a healthy baby. A fetus must gain an appropriate amount of weight or he is at risk of health complications during pregnancy and at birth.

Visit any supplement or health food store, and you'll find hundreds of products designed to help you gain weight. But these products aren't essential for weight gain -- you can get the calories and nutrients you need to put on weight healthfully from the same foods that likely already make up your healthy diet.

Although weight loss occurs when you reduce your calorie intake and burn more calories, creating too large of a deficit can actually backfire. Your weight loss stalls, you burn muscle rather than fat and you end up a few pounds heavier.

Vegans tend to be thinner than meat eaters, but a few tweaks to your diet can help you add extra pounds to your frame. While you can gain weight through food alone, a vegan weight-gain supplement serves as any easy source of calories if you fill up too quickly or have a hard time eating regularly.

Gaining weight can be just as difficult as losing weight for many people. When you're attempting to put on extra pounds, it is not always as simple as eating whatever you like. Making smart choices about foods to consume and knowing which to avoid will help ensure that you are keeping your body healthy and energized.

Eating more is an obvious solution to being underweight, but if you have a weak appetite, it's not an easy one to implement. Certain medications, poor nutrition, food boredom and illness can cause you to lose your appetite.

An exact amount of milk needed for a 3-month old baby is difficult to calculate. Some babies drink small amounts of milk frequently throughout the day while others may consume large quantities with more time between feedings.

Almonds are a healthy, savory snack, packed with protein, fiber and omega-3 and -6 fatty acids. Most people are aware of their health benefits and how to incorporate almonds into a healthy diet, but it is less well known that soaking almonds can unlock more health benefits and make them easier to digest.

Whether you're a vegetarian, vegan or flexitarian, the basics of weight gain stay the same -- you need to consume more calories than you burn to put on weight.