Metabolism is a term used to describe chemical processes that take place in the body to convert food into energy required for the cells to function.
It is quantified by a measure called the Basal Metabolic Rate (BMR) which differs in each individual.
Basal Metabolic rate is the amount of energy required by the body to carry out basic functions while it is at rest. 
Those who have a high metabolic rate loose calories faster and tend to accumulate less fat as compared with those with a slow metabolic rate. 
The rate of metabolism varies because it depends on various factors like genetics, age, body weight, gender, height, and diet.
Medical disorders or conditions can also affect BMR.
Metabolism booster supplements help lose weight in certain medical conditions like obesity or diabetes.
However, they are also consumed by healthy individuals to maintain a high metabolic rate in order to get an extra boost that aids in weight loss. 
Best Metabolism Booster Supplements
This section enlists some of the best supplements that boost the metabolic rate and explains each one of them in detail including the benefits, recommended dosage and key precautions that must be attended to while consuming these supplements.
1. Vitamin B
All B vitamins help in regulating metabolism for appropriate physiological and neurological functioning.
They help reduce homocysteine levels that interfere with cognitive function, weight reduction and prevent the risk of cardiovascular disease.
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All B vitamins play a significant role in metabolism. These vitamins play an important role in the healthy functioning of the physiological and neurological system.
Glucose and fatty acids are used as primary sources of energy by the brain and thus their efficient metabolism is highly important to ensure optimum neurological functioning. 
Essentially, these vitamins help in the metabolism of glucose and fatty acids in the brain and improve brain function.
They also reduce homocysteine levels and thereby improve cognitive functioning and reduce the risk of dementia. 
Clinical studies report that all B vitamins help improve cellular metabolism by reducing oxidative stress and inflammation and all promoting oxidative metabolism for appropriate cellular functioning. 
According to Ramos et al., Vitamin B12 acts as a coenzyme in metabolic pathways concerned with metabolism of glucose indicating that deficiency of the vitamin can result in impaired glucose metabolism thereby serving as the major cause of diabetes. 
Increased homocysteine production is associated with weight gain.
Researchers have identified that oral supplementation of Vitamin B supplements prevents homocysteine production during weight reduction thereby serving as a potential supplement in weight loss. 
A six-month regular supplementation of Vitamin B supplements can help restore micronutrients in the body and reduce production of homocysteine that interferes with weight reduction, significantly. 
High homocysteine levels have been linked to increased risk of cardiovascular diseases as well.
Strain et al. conducted a study in 2004, to prove that B vitamins, folate, vitamin B12, vitamin B6 and riboflavin, that are known to reduce homocysteine levels also reduce the risk associated with heart diseases.   
2. Vitamin D
Vitamin D supplements help in alleviated various metabolic diseases like cardiovascular, diabetes and obesity.
They essentially play a significant role in weight reduction and preventing fat accumulation.
Low levels of Vitamin D are linked to impaired cognition and depression which can be alleviated via dietary supplementation.
Vitamin D is also known as the sunshine vitamin because it is made by the skin on exposure to sunlight.
Vitamin D deficiency drastically affects the absorption of other essential nutrients like Calcium and phosphorus and can result in chronic diseases. 
Vitamin D helps in weight loss and reduce body fat. It also helps maintain the overall health of an individual.
Deficiency of Vitamin D has been linked to an increased risk of obesity, a metabolic syndrome.
Foss Y J. conducted a study in 2009 and reported that Vitamin D deficiency often occurs during winters due to low exposure of the body to sunlight and he proposed this deficiency acts as a stimulus for the accumulation of fat and induction of obesity.  
The study puts forth a strong suggestion towards consuming Vitamin D supplements, especially in winters to prevent the risk of obesity.
In another clinical study, Vitamin D supplementation was found to be capable of suppressing depressive symptoms in stroke patients. 
Calcium supplements are great boosters of metabolism. They aid in weight reduction and prevent the risk of obesity and improve other metabolic functions.
Calcium reduces the frequency of hunger pangs and improves gastrointestinal functioning.
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Calcium is an important mineral for the survival of life. It is present in the body in abundance and comprises 99% of our bones and teeth.
It maintains bone health, helps in blood clotting, neurotransmission, heartbeat regulation, and various other essential roles. 
Besides, calcium is also known to be a great metabolic booster. 
Research studies suggest that diets deficient in calcium are associated with weight gain and ultimately lead to obesity. 
Researchers suggest the intake of calcium supplements to aid in weight reduction and loss.
The concomitant intake of Calcium with Vitamin D supplements aid in better utilization of these micronutrients in the body.
Iron supplements help fasten body’s metabolic rate, regulate normal levels of thyroid hormone and helps support healthy growth and development of an individual.
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Iron is an essential component of Hemoglobin, a protein which aids in the formation of blood cells.
Hence, iron supplements are usually recommended to patients suffering from anemia, especially women. Besides, iron plays an important role in regulating metabolism.
Iron supplements are known to essentially fasten the rate of metabolism in human beings. It acts as a cofactor for the regulation of essential enzymes involved in metabolism.
Thus, iron deficiency and anemia is known to affect the physiological functioning of these enzymes. 
Appropriate regulation of thyroid hormone is indispensable for normal growth and development.
According to a study conducted by Harris and Volpe in 2000, Iron plays an important role in the metabolism of the thyroid hormone thereby preventing alterations in hormone levels closely associated with the Basal metabolic rate of an individual.   
Magnesium plays a significant role in energy metabolism in the body hence intake of magnesium supplements helps in improving performance of activities requiring energy, enhance the availability of glucose in the brain to improve neurological functioning and prevent the accumulation of fat in the muscles.
It also helps improve speed and strength, overall physical activity and prevent cognitive decline in the elderly.
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Magnesium is a mineral found in abundance in the body and is often consumed through foods naturally.
It is also a significant cofactor in various biochemical processes in the body, has a role in synthesis of DNA, energy production and structural development. 
Magnesium plays an important role in energy metabolism and muscle functioning in the body.
Recent research studies on magnesium supplementation have reported that it plays a significant role in improving exercise performance, enhance the availability of glucose which is the primary source of energy in the brain, muscle, and blood.
It also reduces the accumulation of lactate in the muscles.
The study revealed that magnesium supplementation improved speed and standing time in elderly women. 
Clinical studies conducted by Veronese et al. revealed that oral magnesium supplementation for 12 weeks was found to improve physical performance in the elderly and reduce age-related decline in physical activity. 
The vitamins and minerals mentioned for boosting metabolism do not undesirably interact with each other.
However, they should be incorporated in the diet on a daily basis depending upon their need and necessity only.
Vitamin D and calcium have a concomitant effect as Vitamin D helps increase uptake of calcium hence they can be taken together to achieve the best results.
Some of the above-mentioned supplements may interact with medication consumed by the individual and hence it is important to inform your health practitioner of any health conditions or medications you may be suffering from before consuming the supplements.
A gap of a few hours between consumption can be one way of preventing dietary interactions of the two of them.
Metabolism booster supplements work effectively by boosting functions in the body and helping in the maintenance of overall health of an individual.
The vitamins and minerals mentioned in this article play an excellent role fastening rate of metabolism, improving energy production, regulating thyroid hormones, physiological and neurological functioning.