Obesity is influenced by viruses and bacteria

It’s possible that different types of intestinal bacteria increase or decrease your likelihood of gaining weight. Your colon contains a wide variety of microorganisms that compete with one another. While some people have more of one sort of bacteria than another, others have the opposite pattern.

Dietary fibre contains glucose molecules that our bodies are unable to distinguish. Bacteria separate the sugar molecules from each other as the dietary fibre enters your colon, converting them into short-chain fatty acids. Your intestines then absorbs these fatty acids, which your body uses as fuel.

The conversion of dietary fibre into fatty acids that our systems may use as fuel is a skillful one for some bacteria. As a result of other bacteria’s inferior abilities, more dietary fibre passes through the faeces rather than being absorbed for energy.

Dietary fibre cannot be effectively digested into fatty acids that can be taken for energy by a bacterium known as Bacteroides. It is particularly effective at converting dietary fibre into useful energy, thanks to a separate bacterium called Fermicutes. So, more of the fibre you eat will be digested and absorbed rather than pass through your bowels undigested if your gut includes more Fermicutes and less Bacteriodes species. As a result of the varied types of bacteria that live in each person’s colon, if two people consume the same high-fiber meal, one person may digest more calories from the meal than the other.

Obese animals passed less undigested dietary fibre in their stools than thin mice, according to studies on mice. This may mean that the bacteria in the obese mice’s guts are helping them absorb more calories from their food. Lean mice gained weight after having the intestinal microbes from obese mice introduced to them. According to a small-scale human study, fat people’s guts contained more Fermicutes and less Bacteroides than skinny people’s.

The applicability of these findings to the contemporary obesity pandemic is unclear. It’s possible that a shift in our diet—eating more foods made from maize or taking more antibiotics, for example—has encouraged the growth of some bacteria more than others. We may be able to alter our diets to encourage the growth of gut bacteria that are less effective at extracting calories from the food we eat as we learn more about what controls the type of bacteria in our gut.

But, alterations in gut flora simply affect how well your digestive system eliminates calories from food you consume. Hence, you can eat more food and “get away with it” by not absorbing all the calories if you have bacteria that don’t effectively eliminate all the calories from the food you eat. It won’t matter if your gut effectively absorbs the calories from the food you eat if you don’t eat excessive amounts of it. You won’t put on any more weight.

Yet, there is a distinct virus called adenovirus that both infects and makes animals obese. Adenoviruses can infect humans in more than 50 different ways. A few adenoviruses can lead to illnesses that resemble the common cold. Others result in eye irritation or bladder infections. Adenovirus-36 is one type of adenovirus that has been linked to human obesity. Adenovirus-36 has been exposed to by almost one in three obese individuals, compared to only one in ten lean individuals. The twin exposed to the virus is more likely to be overweight when one twin has adenovirus-36 infection while the other does not.

Adenovirus-36 induces fat cells to divide, which multiplies the cells and increases the amount of triglycerides they can store. It is probable that this virus, which was originally identified in 1980 but is likely to have existed for much longer, is a factor in the recent rise in obesity.
Yet, having additional fat cells is similar to having additional food containers. You won’t be obese even if you have nothing to put in the containers. Being infected with this virus wouldn’t prevent someone from starving if they were already famished. Even while your body has plenty of room to store them, it cannot produce triglycerides from nothing. But, if you overeat, this virus will assist your body in effectively storing the excess calories, causing you to gain weight. go to link