Category: Physiology

Carbohydrates are one of the three main macronutrients, and while controversial in some diet trends, their primary function in the human body is essential for life. These vital molecules provide the main source of fuel for your cells, powering everything from everyday tasks to intense physical activity.

Over 70% of the average American's dietary sodium comes from packaged and restaurant foods. Yet, understanding why the body needs sodium and potassium is crucial, as this high sodium intake, paired with often low potassium consumption, can disrupt a critical balance necessary for health.

Approximately 85% of the body's total phosphorus is stored in the bones and teeth, with the remainder playing a central role in diverse cellular and metabolic functions. This essential mineral component, known as inorganic phosphate (Pi), is critical for maintaining overall physiological health and function.

According to medical sources, the average adult stomach typically holds 1 to 1.5 liters of food, a far cry from the 8kg (or 8-liter) volume required for such a feat. Attempting to consume this massive amount pushes the human body well beyond its physiological boundaries, leading to life-threatening complications, and the question of 'can a human eat 8kg of food?' is answered with a firm and dangerous 'no'.

While protein can provide energy, it is not the body's preferred or primary fuel source. Instead, this versatile macronutrient serves a vast array of critical functions, acting as the fundamental building blocks for nearly every cell, tissue, and enzyme in the human body.

An adult's body is approximately 60% water, a fluid medium where substances with electrical charges called electrolytes are dissolved and perform vital functions. This article explains what are electrolytes best described as, highlighting their importance in regulating nerve impulses, muscle contraction, and maintaining proper hydration.

The human body is composed of approximately 60% water, and the proper distribution of this fluid is largely governed by proteins. The relationship between body proteins and water is a dynamic and interdependent partnership that is vital for overall physiological function.

In a typical cell, roughly 109 molecules of adenosine triphosphate (ATP) are in solution at any instant and are turned over every 1–2 minutes, with sugar breakdown being a primary fuel source. So, what does the breakdown of sugar do to power this incredible, non-stop process?

The human body requires a constant supply of energy, with an adult processing about their own body weight in adenosine triphosphate (ATP) daily. This remarkable process, which ultimately answers the question of what provides us with energy to work and play, is driven by the food we eat and a complex series of chemical reactions inside our cells.

According to nutritional studies, feeling full is a complex process influenced by a range of physiological and psychological factors, not just a single variable. The answer to whether you get full based on calories or volume is that both play significant, interconnected roles, with volume often providing a more immediate and noticeable sensation of fullness.