unable to gain proper weight and mass

i am 30 years old and weigh 46 1/2  but look skinny and weak  though i try to eat proper food.i  feel i cant gain mass in my body and so i dont look healthy. m y body doesn`t absorb fat .
how can i gain mass and health too .

[Renee Radenberg]

Have you tried to exercise with weight bearing to gain lean muscle mass? You can work with weights or do Yoga which will build up lean muscle mass. As far as food goes, recommend a Heart Healthy diet which is a moderate fat diet for healthy eating. Moderate fat diet means = use polyunsaturated (omega 3, corn oil, nuts, etc) fats and monounsaturated (olive oil, canola oil, peanut oil, etc) fats, no saturated fats (high fat snack foods, butter, fat spreads) and no trans fats. Eat low fat meats (chicken, fish, loin of pork) or non-meat sources (soy products, nuts), low fat vegetarian combinations (rice & beans, pasta & beans, low fat cheese & pasta), low fat and substitute dairy products (1% milk, low fat/fat free yogurts, low fat soy milk/soy yogurt), use plant oils, non trans-fat margarines, and eat a lot of fruits and vegetables. Eat daily high fiber breads and cereals (oatmeal).