Frequently Asked Questions

  • What is Nutrifix?

    Nutrifix is the first nutrition app to locates the meals nearby that your body needs. From your age, height, weight and health goals, Nutrifix calculates your daily nutritional needs. It will then get to work locating meals nearby tailored to your needs.

    Nutrifix will also recommend recipes and even meals to be delivered.

    See it as your very own personal nutritionist in your pocket.

  • So how do you calculate the daily nutritional needs?

    We start by calculating your BMR (Basal Metabolic Rate) using the gold standard equation calculation. This takes into account body weight, height, weight, age and sex to determine the number of calories you will use day to day simply by staying alive. We then use the Harris Benedict Equation, which takes this BMR and applies an activity factor to determine the individual’s total daily energy expenditure (calories).

    BMR formula
    Women: BMR = 655 + (9.6 x weight in kilos) + (1.8 x height in cm) - (4.7 x age in years)

    Men: BMR = 66 + (13.7 x weight in kilos) + (5 x height in cm) - (6.8 x age in years)

    The Harris Benedict equation
    Sedentary (little or no exercise): Recommended calorie intake = BMR x 1.2

    Lightly active (light exercise/sports 1-3 days/week): Recommended calorie intake = BMR x 1.375

    Moderately active (moderate exercise/sports 3-5 days/week): Recommended calorie intake = BMR x 1.55

    Very active (hard exercise/sports 6-7 days a week): Recommended calorie intake = BMR x 1.725

    Extremely active (very hard exercise/sports & physical job or 2x training): Recommended calorie intake = BMR x 1.9

    This method has been approved by the American College of Sports Medicine and is considered the most accurate way to determine daily calorie requirements.

  • And what if I want to lose weight?

    For weight loss, it’s well established that a calorie deficit of 500 calories each day will result in an average of around 1lb each week (1).

    For weight gain, it’s been shown that by consuming an extra 500 calories each day you will gain around 1lb each week. Therefore, this is reflected in our calorie calculations based on the user’s weight goals.

  • How do you determine my macronutrient recommendations?

    Carbohydrate, protein and fat are the three macronutrients that are all essential for health and contribute significantly to the energy intake of an individual. We recommend specific amounts of these three macronutrients as percentages of total energy intake.

    Our standard recommendation is for carbohydrate to contribute 45%, Protein 25% and fat 30%.

    This is inline with Dietary Guidelines for Americans 2010 (2).

  • Shouldn’t I just cut carbohydrates from my diet to lose weight?

    Many studies have shown that a higher protein intake and a lower carbohydrate intake can be beneficial for weight loss, while maintaining lean muscle mass. This may be due to protein’s satiation effects (3,4).

    Protein intake at higher than the national recommended levels (0.75g per kg bodyweight) have also been shown to produce beneficial results on chronic diseases such as obesity, osteoporosis, type 2 diabetes, Metabolic Syndrome, heart disease, and sarcopenia. (5,6,7,8)

    However, we will advise that individuals do not decrease carbohydrate intake to less than 40% to ensure that recommended daily fibre intake of 30g is met, along with the required micronutrient needs (9).

  • Where can I use Nutrifix?

    Across the UK, however given the density of food operators, the app will work best in London. However you have over 400 nutritious recipes to select from.

  • I sell healthy food how do I get involved?

    Please get in contact and we would love to have you on board.

  • References

    1. British Nutrition Foundation. Healthy Weight Loss
      https://www.nutrition.org.uk/healthyliving/healthissues/healthy-weight-loss.html
    2. Institute of Medicine. Panel on Macronutrients, Panel on the Definition of Dietary Fiber, Subcommittee on Upper Reference Levels of Nutrients, Subcommittee on Interpretation and Uses of Dietary Reference Intakes, and the Standing Committee on the Scientific Evaluation of Dietary Reference Intakes Food and Nutrition Board. 2005. https://www.ncbi.nlm.nih.gov/pubmed/16004827
    3. The American Journal of Clinical Nutrition. 2016 Mar;103(3):738-46.Higher compared with lower dietary protein during an energy deficit combined with intense exercise promotes greater lean mass gain and fat mass loss: a randomized trial. Longland TM et al.
    4. The American Journal of Clinical Nutrition. 2006;83:260–274. Effects of variation in protein and carbohydrate intake on body mass and composition during energy restriction: a meta-regression 1. Krieger JW et al.
    5. The American Journal of Clinical Nutrition. 2008;87:1558S–1561S. Protein, weight management, and satiety. Paddon-Jones D et al.
    6. The American Journal of Clinical Nutrition. 2008;87:1562S–1566S. Role of dietary protein in the sarcopenia of aging. Paddon-Jones D et al.
    7. The American Journal of Clinical Nutrition. 2008;87:1567S–1570S Amount and type of protein influences bone health. Heaney RP & Layman DK.
    8. The American Journal of Clinical Nutrition. 2008;87:1571S–1575S. Protein in optimal health: heart disease and type 2 diabetes. Layman DK et al.
    9. Institute of Medicine; Food and Nutrition Board; A Report of the Panel on Macronutrients; Subcommittees on Upper Reference Levels of Nutrients and Interpretation and Uses of Dietary Reference Intakes; Standing Committee on the Scientific Evaluation of Dietary Reference Intakes. Washington, DC: National Academies Press, 2002.