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Main Causes of Weight Gain in Adults

Currently, the world is in the midst of an obesity epidemic, with the number of obese and morbidly obese individuals currently at record breaking highs. For the first time in history, rather than increasing, life expectancies are actually decreasing, which, considering the technology, medicines, supplements, and various health facilities we currently have available, is pretty shocking to say the least.

The reason for this is very simply due to the fact that so many people, are now classed as obese or morbidly obese. Adults especially, are at much more of a risk of gaining excess body fat, which in turn could put them at risk of certain forms of cancer, of diabetes, of cardiovascular disease, of hypertension (high blood pressure) and much more besides.

But what exactly are the main causes of weight gain in adults, and is it really all down to a poor diet and lack of exercise? Let’s take a more in-depth look.

Growing older

Sadly, one thing we can’t control is time itself, which means that with each passing second, the hands of time begin to catch up with us. As we grow older for example, we find our metabolisms slowing down, our joints getting stiffer and sore, our energy levels decreasing, and our muscle mass levels also declining.

As people grow older and lose muscle mass, this can in turn, lead to weight gain because muscle mass requires more calories to maintain itself, than fat does. This means that the more muscle you have, the more calories you burn, so losing muscle means that you burn fewer calories.

Even if a person eats the same foods, and does the same amount of exercise, a loss of muscle can still lead to gaining of body fat, so try to incorporate more resistance-based exercises into your routine.

An underactive thyroid

Underactive thyroid glands can occur in people of any age, but statistically, a person is far more likely to suffer from an underactive thyroid gland, if they’re aged 40 or above. If your thyroid gland is underactive, it won’t be producing sufficient enough amounts of thyroid hormones which play a key role in basic metabolic functions within the body.

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Put simply, if your thyroid gland is underactive, your metabolism will slow down, meaning that not only will you find it harder to lose weight, you will also find it easier to gain weight.

A poor diet

Although a poor diet is the primary cause of weight gain in children and adults, adults will find themselves especially susceptible to weight gain if they consume unhealthy foods and drinks, because their metabolisms will have slowed down, and they’ll also be less active.

Rather than processed ready meals, baked good, fast food, and various other foods and drinks laced with artificial ingredients, sugar, and unhealthy fats, we should instead be consuming healthy and balanced natural foods, including plenty of lean protein and fresh fruits and vegetables.


Most of us will enjoy a drink from time to time, and whilst the odd beer or glass of wine now and then won’t do us any harm at all, the problem is that many people don’t just have the odd glass now and then, they’ll find themselves drinking alcohol every night, and in large quantities.

Alcoholic beverages such as beer for example, are made from grains which are very high in carbohydrates. Wine is just as bad, on the calorie-front, and what’s more, the calories found in alcoholic beverages are considered empty calories, because they offer virtually no nutritional value at all.

If you consume more calories than the body can burn off, you gain weight, it’s as simple as that. Alcohol however, also suppresses the metabolism, and leads to cravings for unhealthy foods. If you do drink, drink in moderation, and try not to drink regularly.

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