One study found that as calorie intake increases, there is a corresponding increase in metabolic efficiency that is designed to maintain you around a particular body weight. However, if your caloric intake ex­ceeds your body’s ability to burn up those calories over time, the ex­cess calories are converted into fat and glucose.

The Type of Food You Eat

Protein requires more energy to be broken down, digested, and ab­sorbed, and resting metabolic rate typically goes up after eating protein as much as two to three times more than after eating carbo­hydrates and fats.

Your Age

The body typically starts to lose muscle after age 30, so everything else being equal—activity level, calorie intake—you’ll gain weight be­cause of this loss of muscle.

Genetics

Some people simply have a naturally more efficient metabolism than others.

Nutritional Status

Metabolism requires the smooth running of many complex physio­logical processes. When there are nutritional deficiencies, particu­larly in antioxidant vitamins such as B and C, metabolism can become less efficient.

Water Intake/Hydration

When the body has taken in sufficient water, body temperature can be maintained for optimal metabolism. Dehydration can make the body temperature drop slightly, and with a reduction in temperature, the body will attempt to help raise temperature by storing fat to act as an insulator. So drinking too little water can contribute to an ineffi­cient metabolism and hoarding of fat.

Menopausal Status

Menopause also adds additional hormonal burdens to metabolism and weight loss. During menopause, women become more effective at storing fat and less able to burn fat. After menopause, an enzyme called adipose tissue lipoprotein lipase (AT-LPL) is more active. AT-LPL breaks fat down so that fat cells can absorb it. One study found that the burning ability of fat taken from the buttocks of postmenopausal women was 75% less than in perimenopausal women.

Summary

As you can see, the body is a calorie miser, and there are a number of places that these complicated processes can fail, making it easier for you, especially as a thyroid patient, to gain weight, and making it harder to lose weight. Buy acomplia to lose weight comfortably.

The amount of weight-bearing exercise you do has an effect on your metabolism. Building muscle mass usually requires some sort of weight-bearing or resistance work such as lifting weights, using exer­cise bands or hand weights, and other similar forms of exercise.

According to Stephen Langer, an expert on weight loss and thyroid function, one lesser-known aspect of metabolism is brown fat, also known as brown adipose tissue (BAT). BAT is a special kind of adi­pose fat that collects below the neck and extends down the back. It helps convert deposits of body fat into heat. The hypothalamus helps your nervous system trigger the action of brown fat, whose special­ized mitochondria are particularly effective at generating heat and energy. People who are overweight may have lost the assistance of brown fat, and their excess calories go into fat storage. To avoid this, buy xenical, one of the most popular medication on the market.