Like many other medical conditions, obesity is the result of an interplay between environmental and genetic factors. Studies have identified variants in several genes that may contribute to weight gain and body fat distribution; although, only in a few cases are genes the primary cause of obesity. Somewhere between 25 and 70 percent of factors that affect body weight are tied to our genes. That's a broad range. And it means that the science is still evolving. But we do know that your DNA can make a difference in how full you feel as you eat, your appetite levels and how your body burns calories. So the same advice holds true: Get active. Aim for 2 1/2 hours of moderate-intensity exercise like brisk walking every week. Even doing 10 minutes at a time helps. Eat less. Cut calories. Choose good-for-you foods. Go for fruit, veggies, whole grains, and fat-free or low-fat dairy foods. Factors Affecting Weight & Health Family history and genes. Overweight and obesity tend to run in families, suggesting that genes may play a role. Race or ethnicity. Age. Sex. Eating and physical activity habits. Where you live, work, play, and worship. Family habits and culture. Not enough sleep. Their work reveals newly discovered genetic regions linked to being very slim. The international team say this supports the idea that, for some people, being thin has more to do with inheriting a "lucky" set of genes than having a perfect diet or lifestyle. The study appears in PLOS Genetics.
Metabolism is partly genetic and largely outside of one's control. Changing it is a matter of considerable debate. Some people are just lucky. They inherited genes that promote a faster metabolism and can eat more than others without gaining weight.
The strength of the genetic influence on weight disorders varies quite a bit from person to person. Research suggests that for some people, genes account for just 25% of the predisposition to be overweight, while for others the genetic influence is as high as 70% to 80%.
Here are 10 easy ways to increase your metabolism. Eat Plenty of Protein at Every Meal. Eating food can increase your metabolism for a few hours. Drink More Cold Water. Do a High-Intensity Workout. Lift Heavy Things. Stand up More. Drink Green Tea or Oolong Tea. Eat Spicy Foods. Get a Good Night's Sleep.
Choose minimally processed, whole foods: Whole grains (whole wheat, steel cut oats, brown rice, quinoa) Vegetables (a colorful variety-not potatoes) Whole fruits (not fruit juices) Nuts, seeds, beans, and other healthful sources of protein (fish and poultry) Plant oils (olive and other vegetable oils)
It's thought that genetic factors account for 60 to 80 percent of your final height. Certain environmental factors, such as nutrition and exercise, typically account for the remaining percentage. Between age 1 and puberty, most people gain about 2 inches in height each year.
Genetic rarities One such rare form of obesity, called "monogenetic obesity, " appears to be caused by spontaneous mutations in single genes that are involved in appetite control and food intake. Certain genetic syndromes are also linked to obesity, including Prader-Willi and Bardet-Biedl syndromes.
Summary. Weight gain and fluctuations in weight can happen for a variety of reasons. Many people progressively gain weight as they age or make changes to their lifestyle. However, fast weight gain can be a sign of an underlying health condition, such as a problem with the thyroid, kidneys, or heart.
There are many reasons why people gain belly fat, including poor diet, lack of exercise, and stress. Improving nutrition, increasing activity, reducing stress, and making other lifestyle changes can all help people lose unwanted belly fat. Belly fat refers to fat around the abdomen.
Not Eating Enough Protein A lack of protein in your diet might be making you gain fat. This important nutrient can help you stay fuller for longer while eating less food ( 29 ). To increase your protein intake, try eating more protein-rich foods like eggs, meats, fish, tofu and lentils.
The individual has no control over some of these factors, including developmental determinants, genetic makeup, gender, and age. Other factors that influence body weight over which the individual has potential control include level of physical activity, diet, and some environmental and social factors.
While diet and exercise alone may not be enough to cure obesity, they are still two of the best ways to prevent it. For treating obesity, however, the researchers recommend considering biologically based treatment, including medication and surgery where appropriate.
Some people have a naturally low BMI due to physical characteristics that run in their family. A high metabolism. If a person has a high metabolism, they may not gain much weight even when eating high-energy foods. Frequent physical activity.
A BMI number is designed to give you an idea of how much body fat you have as a ratio of your weight to height. It's measured by taking your weight in kilograms and dividing it by your height in meters squared. A reading at or over 30 means you're obese. A reading at or over 40 is severe obesity.
However, it's important to note that most of the time, genetics are the main factor at play in where the excess weight goes on your body. That means that back fat can fluctuate according to the phase of life you're in, your total body weight, your height, and your activity level.