The Science of Nutrition: How to Fuel Your Body Right
Understanding what goes into your body is more effective than any crash diet. I simplify the science of macronutrients and vitamins to help you make informed daily food choices.
Understanding macronutrients is fundamental to nutrition. Protein is for muscle repair, fat is for hormone function and energy reserves, and carbohydrates are the primary fuel for your body and brain.
Protein needs change, especially for nursing women who require about 20 grams more per day to support milk production. I help clients adjust their intake based on their specific life stage.
This chart explains how different foods are broken down by the body. Proteins digest into amino acids for building, carbs into sugar for energy, and fats into vital molecules for cellular health.
Different foods target different parts of your body. For example, salmon and walnuts are excellent for brain health, while tomatoes support the heart and leafy greens are great for your hair and skin.
A varied diet ensures you get a full spectrum of vitamins. This chart shows food sources for essential vitamins, from Vitamin A in carrots to B-vitamins in leafy greens and proteins.
About The Science of Good Nutrition
Most weight loss attempts fail because they rely on restriction rather than understanding how food functions as fuel. Your body does not just need fewer calories. It needs a precise balance of macronutrients, like protein for tissue repair and specific carbohydrates for brain function. When you grasp how these nutrients impact your metabolism, you stop guessing and start seeing consistent, sustainable health results.
Nutrition is often overcomplicated by fad trends, but the underlying biology is consistent. My approach focuses on practical application of nutritional science based on your specific life stage and body composition.
Why Macronutrients Matter
Protein is the building block for your body. For example, nursing mothers require an additional 20 grams of protein daily to maintain milk supply, while older adults should aim for 1 to 1.5 grams of protein per kilogram of body weight to maintain muscle mass. Carbohydrates are not your enemy. They are the primary fuel source for your brain and daily activities. Fats are essential for hormone function and protecting your cardiovascular health. When you know how to balance these, you can enjoy regular foods like rotis and vegetables while hitting your health targets.
Food as Information
Every food you consume sends a signal to your body. Leafy greens, salmon, and nuts are not just calories; they contain the vitamins and minerals that dictate everything from your skin glow to your energy levels. I use body analysis data—measuring your fat percentage, visceral fat, and muscle mass—to move beyond the scale. This allows us to adjust your plan based on how your body is actually responding to the fuel you provide. Whether you are managing thyroid issues, anemia, or post-pregnancy recovery, my protocols ensure you get the right nutrients to support your recovery and growth without resorting to starvation.
Surbhi Aggarwal
I am Surbhi Aggarwal, based in Punjabi Bagh. My approach replaces confusion with clarity, ensuring every meal serves a purpose. I focus on scientific nutritional planning that fits into your actual life, not a rigid, restrictive regimen.
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