Calculating Calories and Macronutrients

Posted on July 1, 2024

A calorie is a unit of energy that acts as a source of fuel for the body, to perform its daily functions. Calories are then broken down into three main macronutrients: carbohydrates (CHO), protein, and fats, which provides functions that are essential for energy production, alongside protecting vital organs, muscle, and skeletal functioning, and facilitating the immune and nervous system. The Government Dietary Recommendations advises that males and females should consume 2500 kcal or 2000 kcal/day. However, measuring the gold standard total energy expenditure (TEE), is a greater observation for individuals, as TEE includes inter-individual differences such as body weight, composition, and activity level, where nutritional requirements can be individualised.

Carbohydrate

Carbohydrates are sugar molecules that are broken down by the digestive system into glucose, which is the main energy source for the body, and functioning for vital organs such as the brain. Glucose can be made out of necessity from proteins using gluconeogenesis. Carbohydrates are divided into two, determined by the food’s chemical structure and how quickly the body can digest it.

Simple CHO- short-lasting elevation in energy, however, are broken down quickly for energy or glucose. For example, fruits, milk, and breakfast cereal.
Complex CHO- long-lasting elevation in energy, and take longer to digest due to containing longer chains of sugar molecules, taking longer to break down. For example, starches (pasta, bread, rice, beans, potatoes).

Protein

Essential for growth, build, and repairing tissues, while protecting muscle mass. Protein contains two types of amino acids: non-essential and essential, in which essential amino acids are required through diet, which can be found in foods such as meat, poultry, milk, or other types of animal by-product. Plant protein sources such as beans, lentils, nuts also contain essential amino acids.

Fat

Provides an essential function, acting as a long-term source of energy, whilst insulating and protecting the vital organs, and absorbing vital micronutrients. For athletes, fat intake is critical for controlling cholesterol and blood pressure during exercise. Despite the controversy of fats and the earlier assumptions that reducing total fat intake (< 30% of energy) would improve metabolic health and risks of cardiovascular disease and cancer, polyunsaturated fats provide the essential functions.

Trans fat- should be avoided, as most trans fat comes from hydrogenating or adding hydrogen molecules to unsaturated fats. Examples., fried foods, margarine, doughs.

Saturated fat (< 10 % of daily calories)- too much saturated fat in diet can increase LDL cholesterol levels, with a greater risk of heart disease. Examples., found mostly in animal sources with high fat contents (lamb, beef, pork, with skin, dairy, or butter.

Unsaturated fat- (monounsaturated = 15-20% polyunsaturated = 5-10% of daily calories) healthy fats, originated from plant sources such as avocados, vegetable oils, or animal sources such as fish: salmon, tuna, sardines.

Calculating Macronutrients

Carbohydrate- 10g = 40 kcal

Protein- 10g = 40 kcal

Fat- 10g = 90 kcal

– Calculate total Macronutrient Calories

Nutrition labelling- you can calculate the calories for each macronutrient by multiplying each by their designated macronutrient calorie count

– Assess Macro Ratio (%)

Divide each calorie quantity by total calories and then multiply by 100. The percentage of all three macronutrients should total 100%.

Tracking apps such as my fitness pal, can be helpful when there is no nutrition facts label, as they provide a nutritional breakdown of the food through either a database, or a barcode scanner feature to quickly input nutrition information for packaged foods.

Calculating Total Energy Expenditure (TEE)

TEE is the required calories that are burned throughout the day, that consider the energy costs of the essential processes, such as brain functioning, (basal metabolic rate (BMR), of the energy expended to digest, absorb, and convert food, and the energy expended during physical activities. From previous research, calculating TEE is a greater observation for individuals, as TEE includes inter-individual differences such as body weight, composition, and activity level, where nutritional requirements can be individualised. TEE provides a baseline to compare current consumption to and then adjust accordingly to goals, for example fat loss or muscle gain

Kcal/day = 500 + 22 x lean body mass, where lean body mass + (0.32810 x weight in kg) + (0.33929 x height in cm) – 22.5336.

Conclusion

In conclusion, mastering the art of calculating calories and macronutrients is an empowering journey toward optimising nutrition and achieving health and fitness goals. By understanding the energy content of various foods and tailoring macronutrient intake to individual needs, one can create a balanced and sustainable dietary plan. Whether aiming for weight loss, muscle gain, or overall well-being, the precision offered by calorie and macronutrient calculations allows for a more informed and intentional approach to nutrition. Remember, the key lies in moderation, flexibility, and recognizing the unique requirements of your body. Armed with this knowledge, individuals can embark on a nutritional path that not only fuels their physical endeavours but also nurtures a healthy relationship with food.

If you have found this article useless and would like to speak to one of our team and nutritionists to get help in designing a nutritional program for you that you can follow then please contact us via email or telephone.

The Power of Protein: Health and Performance

Posted on July 1, 2024

The Power of Protein: Fueling Your Body for Health and Performance

Protein, often referred to as the building block of life, plays an indispensable role in our overall health and vitality. Beyond the obvious association with muscle growth, protein is a multifaceted nutrient that is involved in numerous essential functions throughout the body. In this article, we’ll explore the power of protein and its critical impact on health, performance, and overall well-being.

What is Protein?

Proteins are complex molecules comprised of amino acids, the fundamental units of life. There are 20 different types of amino acids, and the specific sequence and arrangement of these amino acids in a protein determine its unique function. These functions are diverse and vital, making proteins the workhorses of life.

Building and Repairing Muscles

When most people think of protein, they envision bodybuilders and athletes striving for muscle growth. And they’re not wrong. Protein is crucial for muscle development and repair. When you exercise, you create microscopic tears in your muscle fibers. Protein steps in to repair and strengthen these fibers, resulting in increased muscle mass and strength.

Supporting Enzymes and Hormones

Proteins also serve as enzymes and hormones, which are catalysts for various biochemical reactions in the body. Enzymes are responsible for breaking down food, aiding digestion, and facilitating metabolic processes. Hormones regulate essential functions such as growth, mood, and sleep patterns. Without proteins, these crucial processes wouldn’t function optimally.

Immune Function

Proteins are a cornerstone of the immune system. Antibodies, which defend the body against pathogens, are proteins. A diet rich in protein ensures the body has the raw materials to produce these essential immune defenders.

Transport and Storage

Proteins are involved in transporting vital substances throughout the body. Hemoglobin, for instance, is a protein that carries oxygen from the lungs to tissues, while myoglobin stores oxygen in muscle cells, ensuring it’s available during physical activity.

Maintaining Healthy Skin, Hair, and Nails

Proteins like collagen provide structural support to our skin, hair, and nails. Without adequate protein, you may experience brittle nails, dull hair, and dry skin.

Weight Management

Protein is well-known for its role in weight management. It promotes a feeling of fullness and helps control appetite, which can be instrumental in weight loss and maintenance. It also supports the preservation of lean muscle mass, which is vital for metabolic health.

How Much Protein Do You Need?

The recommended daily intake of protein varies based on factors such as age, sex, activity level, and overall health. On average, a sedentary adult should aim for at least 0.8 grams of protein per kilogram of body weight. However, athletes and individuals looking to build muscle or recover from intense physical activity may require more.

Sources of Protein

Protein is abundant in various foods. Animal sources like lean meats, poultry, fish, and dairy products are complete proteins, meaning they contain all essential amino acids. Plant-based sources like beans, lentils, tofu, and quinoa provide protein too, although they may lack some amino acids found in animal products. Combining plant-based protein sources can create complete proteins for vegetarians and vegans.

In Conclusion

The power of protein cannot be overstated. It is an essential nutrient that influences every aspect of our health and performance. Incorporating an adequate amount of protein into your diet ensures proper muscle development, supports immune function, maintains healthy skin and hair, aids weight management, and provides the body with the tools it needs for optimal function. Whether you’re an athlete striving for peak performance or an individual looking to maintain overall health, protein is a key player in your journey towards well-being and vitality.

If you are interested in how to include more protein in your diet or how much you should be taking on a daily basis, then contact one of our nutritionists and we can provide you with the help and support you need.

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