Calorie Content of Food to Gain Weight
Proteins and all carbohydrates have 4 calories per gram and fats have 9 calories per gram, but different foods have different calorie density due to what the food is made of and its water content.
A person could eat two heads of lettuce and feel quite full, but few calories would be consumed. However, a small stick of butter would contain loads of calories although it would be difficult to eat a stick of butter in one sitting.
If you want to beef up your calorie content to gain weight then choose calorie-concentrated foods.
Choose foods that are both nutritionally dense and calorie dense, as they will help you gain weight by adding muscle mass and not fat.
Foods That Have Few Calories
Foods that have a lot of fiber and a high water content are usually very low in calories. Many vegetables are low calorie foods and won’t help you gain weight but are often used by body builders to “lean up” before a competition. Nutritionally, vegetables should still be included in the diet, but not in bulk. Here are some low calorie options.
- lettuce
- broccoli
- cucumbers
- spinach
- celery
- cauliflower
- peppers
- onions
- oatmeal
Carbs That are Calorie-Dense
Choosing the right carbs is important and just because a food has a lot of calories, it doesn’t mean the food is nutritious or that it will help you gain weight. For instance, white bread and white sugar are calorie dense but they are nutritionally empty and have been shown to cause people to gain weight, although in the form of fat cells not muscle mass.
Pick foods that are made of complex carbs, that will provide your body good nutrition, and that will not spike blood sugar levels. Calorie dense carbs to use as part of a gain weight diet include.
Calories From Fats
This is an item of great controversy in the area of diet and gaining weight. Some promote eating very little fat, while others say that you can eat as much fat as you like and still lose fat and build muscle.
There is a happy medium. Those wishing to gain weight should eat some fat, but make sure the majority of the fat consumed is healthy fat. Cells actually require fat to function and grow. Stay away from processed fats like hydrogenated oils and eat natural fats found in foods such as;
- nuts
- avocados
- eggs
- olive oil
- fish oil
- flaxseed oil
Muscle Mass Builder: Protein
Since muscles are composed of protein, then it only makes sense that a gain weight diet should contain a lot of protein rich foods. Now protein doesn’t go straight to your muscles but is first broken down into amino acids and then the body uses these amino acids to build the proteins it needs to grow more muscle cells. Most people think of meat as their number one protein source, but legumes, some grains, and some vegetables are good sources of protein as well. Protein rich foods include;
Gain Weight Diet: Add Muscle, Not Fat
What are bioactives? 
For more information on nutrition, including information on nutrition and people, conditions related to nutrition, and diets and recipes, as well as some useful videos and tools, see Nutrition. 
Introduction to erectile dysfunction and systemic health
Dyslipidaemia (abnormal blood lipid concentrations) is also associated with erectile dysfunction. Moderate cases of dyslipidaemia, which might not typically warrant treatment, may be the primary cause of erectile dysfunction in some men. Treating moderate dyslipidaemia can improve erectile function in these cases. The two conditions commonly co-exist. Different studies have reported that 40–70% of men with erectile dysfunction also experience dyslipidaemia, and men with dyslipidemia have an increased risk of developing erectile dysfunction.
Other health conditions associated with erectile dysfunction include:
Many modifiable lifestyle factors affect erectile function and the effectiveness of its treatments, or are associated with conditions that cause erectile function. For example, diet and smoking are associated with cardiovascular disease, of which erectile dysfunction can be a symptom. Thus doctors are likely to assess the lifestyle of men with erectile dysfunction, with the aim of identifying and modifying lifestyle factors which may be exacerbating the condition.