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Why Can Weight Vary From Day To Day? Here Are The Six Main Reasons

Reduction of body mass caused by pathological processes; may be accompanied by anorexia (decreased or loss of appetite ) or, conversely, by ordinary or even increased appetite.

Weight changes over a day but also within the same day are expected. Let’s find out the main reasons that affect these changes. The weight usually changes from day to day and even within the same day for different reasons. Also, minor variations of a pound or a pound are expected and shouldn’t cause concern.

The Reasons Why Weight Varies From Day To Day


Constipation is one of those ailments that can also affect your weight in addition to being very annoying. If you suffer from a lazy bowel, you can weigh up to 2 kilos more, even if you follow the letter’s diet. To regain intestinal regularity, it is essential to follow a diet rich in fiber, eating five portions a day of fruit and vegetables, eating legumes as a protein source at least three times a week, and preferring whole grains. Also, always try to stay active and drink at least 1.5 liters of water a day.


Due to the hormonal changes that occur during your period, the body retains a lot more fluids. Consequently, it is normal for the weight to fluctuate even though the power supply has not changed.

Water Retention

Water retention is an accumulation of fluid localized on the buttocks, legs, and abdomen, caused by poor circulation, which can affect the weight, causing it to increase up to 2 pounds. 

To avoid the extra pounds due to water retention, use spices instead of salt to flavor your dishes, and watch out for products that are naturally high in salts, such as aged cheeses, cold cuts, and sausages, baked goods, and sauces.

Not Getting Enough Sleep

Numerous scientific researches have shown that sleeping a little bit makes you fat:

  1. Going to bed late every day alters the production of some hormones in the body, particularly by increasing ghrelin levels.
  2. The hormone that induces the sensation of hunger.
  3. You are inhibiting the production of leptin, the hormone capable of stimulating the sense of satiety. 


After an intense workout, the electrolyte imbalance caused by the loss of mineral salts can favor the stagnation of fluids, affecting your weight. Wait a couple of days before weighing yourself so you can replenish the nutrients your muscles need and don’t worry about weight fluctuations.


Even stress can be responsible for fluctuations in weight. Stress and anxiety can affect hunger, pushing you to eat more and prefer unhealthy but rewarding foods. It is essential to know that the body weight can fluctuate up to 2-3 kg during the day. Therefore, it is good to always weigh yourself on the same day and at the same time, preferably in the morning as soon as you get up.

Finally, it is advisable to weigh yourself only once a week, always on the same day during the diet. In this way, the temporal distance between the measurements will be sufficient to evaluate the long-term results.

What Are The Remedies For Weight Loss?

The best remedy depends on the cause of the weight loss. Sometimes psychological interventions may be necessary. Other times, pharmacological treatments are indispensable. At other times, appropriate dietary precautions and adequate physical activity may be sufficient.


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