Why Can’t Some People Gain Weight After Having A Heavy Diet?

By Shubhi Kumar
12 Jun 2025, 16:00 IST

Some people struggle to gain weight despite eating well. This happens due to genetic, metabolic, lifestyle, or psychological factors that affect how the body processes and stores calories. Tap to read!

Genetics

Genes account greatly for body type, the rate at which metabolism works, and the storage of fats. Thereby making it hard for some individuals to gain weight.

Fast Metabolism

Having a fast metabolism means calories are quickly burned; even when at rest, the surplus of calories is minimal for weight or fat gain.

Physical Exercise

Those who are very active or rude during the day tend to burn plenty of calories, often exceeding what they consume.

Behavioural Concerns

Meals missed, irregular eating patterns, or getting full quickly can prevent the intake of a sufficient number of calories required to put on weight.

Sleep and Stress

Interference in sleep and constant stress can affect the effects on hormones, appetite, digestion, and nutrient absorption, thereby affecting healthy weight gain.

Information credits

This information is sourced from Healthline. Please consult a healthcare provider for personalised advice on nutrition or weight management.