It may be that you have a fast metabolism (meaning your body burns energy from food at a fast rate than the people around you) or you're just naturally slender. For some people, underlying health conditions and certain medications and treatments can make it difficult to reach and/or maintain a healthy weight.
A Fast Metabolism
This rate changes from person to person based on a number of factors, including genetics, diet, and level of activity; if you eat a lot but don't gain weight, it could be because your BMR is high, so you burn calories at a greater rate than most people.
There are different factors for it : high metabolism, your daily routine, your genes and lastly, the calorie consumption in the whole in different meals. If you think, you eat a meal of 1000 calorie a single meal and then eat 5 chappati the whole day, nothing is going to happen on your body.
Signs of a fast metabolism
You have difficulty gaining weight or keeping weight on, even though you eat regularly. You have a high body temperature, even when you are resting. You are often hungry or have an insatiable appetite, even after eating meals or snacks.
A person's build depends largely on genetic factors, which is why it is difficult for a naturally thin person to put on weight. The human body can change to a limited extent through weight training and increased food intake. Gaining or regaining weight can be just as difficult as losing weight.
If you are underweight and struggle with putting on pounds, you'll likely need more calories than someone looking to add some additional muscle mass to an already healthy frame. For some, increasing calories by 5 to 10% (or roughly 100 to 300 calories a day) is enough to support additional lean muscle growth.
Eat food rich in carbohydrates like parathas, a plate full of brown rice, whole milk, eggs, potatoes, full-fat curd, etc. These give your body the energy it needs to gain weight. Foods that are high in fat are difficult to digest and thus can slow down your metabolism, so consume food rich in carbohydrates only.
People who need to gain weight can often do this by increasing their intake of foods rich in whole carbohydrates, healthy fats, and protein. Examples include whole grains, dried fruit, potatoes, avocados, oily fish, eggs, and dairy products. A doctor may recommend that people with a low body weight try to gain weight.
Low body weight is due to a variety of causes, including: Genetics. If you've been thin since high school and it runs in your family, it's likely that you were born with a higher-than-usual metabolism. You also may have a naturally small appetite.
If your BMI is less than 18.5, it falls within the underweight range. If your BMI is 18.5 to 24.9, it falls within the Healthy Weight range. If your BMI is 25.0 to 29.9, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obese range.
What causes being underweight? People become underweight for many different reasons. Some may be born naturally small and their low BMI is due to their genes. Some may have a very high metabolism and find it hard to put on weight, even if they eat foods that have a lot of calories.
Many people assume that having a smaller body or lower body weight is a sign of good health. But this is a common misconception. A person's weight is just one of many factors that influences their health. And, what's more, a low body weight can come with real health risks.
“Thinness is a heritable trait”
So thin people not only stay slim “by not having the obesity genes, but they also have different genes that protect them” from gaining weight, she said. The research concludes that “thinness, like obesity, is a heritable trait.”
People who are underweight or undernourished often experience symptoms such as fatigue and lethargy as well as low blood pressure, heart rate and blood sugar levels, which can cause night sweats, having cold fingers and toes and muscle problems, says Judy Simon, a registered dietitian nutritionist at UW Medicine who ...
If you are skinny and can't put on size, you most likely need to eat a lot more than the average person like me. This means your caloric intake is likely to be 3500-4000 calories to start. Uncommon goals require uncommon solutions. Follow guidelines below to calculate your starting point.
A slow metabolism has many symptoms, and you're likely to have one if you find it difficult to lose weight and easy to gain weight. Other symptoms include fatigue, poor digestion, constipation, low mood, and a colder than average body temperature. All of these are caused by the lower production of energy and heat.
People with more muscle mass often have faster metabolisms that burn more calories. Age: You lose muscle as you get older, which slows down the metabolism. Sex: Males tend to have faster metabolisms than females. They have more muscle mass, larger bones and less body fat.