Can Multivitamins Make You Fat & Cause Weight Gain?

Multivitamins are good for most people.

Typically, these products are intended to address vitamin and mineral shortages and make up for nutrient shortfalls caused by an inadequate diet.

But can they potentially result in weight gain?

Let’s find out!

Do Multivitamins cause weight gain?

Multivitamins do not affect your weight instantly because they are calorie-free. As a result of their effects on appetite and metabolism, however, they can contribute to weight loss or gain.

Let’s dive deeper into the relationship between multivitamins, weight loss or gain and the vitamins they contain!

Minerals And Vitamins

Certain minerals and vitamins present in multivitamin supplements can assist in regulating your metabolism, or the rate at which your body burns calories.

By taking multivitamins, there is a greater possibility that your body will contain all of the necessary nutrients for optimal operation.

This may have an effect on your weight due to its effect on your metabolism, which is supported by a vast array of nutrients. Importantly, your metabolism controls the rate at which your body expends kilojoules, and a healthy metabolism is vital for weight control.

Your nutritional intake may also influence your appetite and, consequently, your food consumption. For instance, low vitamin B6 levels are connected with a decrease in serotonin levels in the brain, which may result in an increase in appetite.

On the other side, some individuals may blame multivitamins for weight gain or failure to lose weight because they disregard their general lifestyle. This is especially true for individuals who supplement their diet with multivitamins.

If you are taking multivitamins because you are not eating healthily, are inactive, or are on a restrictive diet, it is possible that these linked behaviors, not the multivitamin, are responsible for weight gain. 

You can locate the ideal multivitamin, but remember that pills should not substitute for a healthy lifestyle.

B vitamins (particularly B5, B2, B3, and B6), calcium, vitamin D, magnesium and iron can maintain a healthy metabolism and even aid in fat loss.

Influence On Your Appetite

One of the most advantageous impacts of multivitamins is their potential to assist in appetite control. According to nutritionists, certain vitamins decrease hunger, increase metabolism, and contribute to fat loss. 

These vitamins provide a healthy method to reduce hunger and preserve satiety while consuming fewer calories. Some vitamins are more powerful than others at suppressing hunger. 

Thus, you should visit your doctor for detailed information on which vitamins are the most beneficial.

Vitamin C and Omega-3 Might Contribute to Weight Gain

According to dietitians, vitamin C offers numerous health benefits, which include the capacity to reduce cravings, appetite and addictions. 

One of the most useful forms of vitamin C for appetite suppression is the buffered type, which also includes magnesium and calcium. Due to its anti-addictive properties, this form can aid in weight management. 

Taking buffered vitamin C on a daily basis may mitigate adverse food cravings, withdrawal symptoms and food reactions.

According to research, vitamin C may play a role in fat accumulation (especially belly fat).

Omega-3 fatty acids are the most beneficial vitamins for lowering appetite and regulating weight. 

According to experts, these fatty acids provide the body with the critical elements that must be replaced on a low-calorie diet for weight loss. Eating a diet abundant in these types of acids may significantly reduce hunger and appetite. 

In addition, they provide the body with a lot of additional health benefits, including increased cardiovascular and neurological health, higher mood and mental performance, healthy skin and hair and decreased inflammation.

This is due to the fact that omega-3 can lower appetite and hunger. According to scientific research, boosting the levels of leptin, a satiety hormone, can even create a feeling of fullness in obese patients.

Vitamin B Could Cause Obesity

Providing the human body with proper levels of critical vitamins can aid in weight control, and the vitamin B complex vitamins are among the most helpful. 

A nutritionist states that vitamins such as vitamins B3, B2, B6 and B5 can suppress hunger and appetite, regulate metabolism and promote optimal thyroid function. 

The B3 vitamin is also a component of the glucose tolerance factor, which is released in response to an increase in blood sugar. This impact helps to moderate blood sugar spikes and drops.

B5 vitamin also plays an important role in adrenal function and energy generation, both of which contribute to weight loss. Vitamin B6 is another beneficial B vitamin for hunger control; it also modulates metabolism and thyroid hormone production.

This may be the case since vitamin B greatly encourages body fat accumulation (if the amount consumed is just below the threshold of toxicity). Pantothenic acid (vitamin B5), thiamin (vitamin B1), and pyridoxine are the B vitamins that raise the probability of obesity the greatest (vitamin B6).

Not a Substitute for a healthy way of life

Even though they can improve your health (especially if you have a deficit) and promote weight loss, supplements should not replace a nutritious diet and regular exercise.

Supplements are less nutritious than food, lack good dietary fiber and other protective chemicals (e.g., antioxidants) required for optimal health, and will not result in significant weight loss if not combined with a healthy diet.


Even though vitamins can influence metabolism and appetite, they are often not the primary cause of excessive gain in weight when taken in moderation. Even more, there is evidence that they promote weight loss.

Therefore, you do not need to refrain from vitamins in order to achieve fitness. Just make sure you don’t overindulge in them and that you maintain a healthy, balanced diet plan and get enough exercise.

Leave a Comment