Thanks Kevin DiDonato MS, CSCS, CES
Could you imagine seeing the headline: “Nature’s
antibiotic is the latest nutrient in the battle on obesity.” This would send
the media into a frenzy, and practically put garlic growers on pace to become
multi-millionaires, or even billionaires.
Of course, I wouldn’t go that
far!
But the headline above is true! Garlic has wonderful effects in
the body, from heart disease and blood pressure to cholesterol. Imagine if
those same nutrients which help the heart, can actually help us lose fat! How
would that information affect you? Would you run out and buy garlic, just to
see if you could lose a pound or two?
Most people looking to lose weight
would answer with a resounding yes! How does it work? Let me
explain. Garlic has cancer-fighting, heart disease-fighting and blood
pressure-lowering properties built into it. We can now add obesity-fighting and
anti-inflammatory properties!
Obesity, along with heart disease and a
host of other diseases, start by an inflammation response. Adipocytes are no
different. This chronic, low-level inflammation leads to fat cells
impairment. Inflammation leads to the release of macrophages, pro-inflammatory
cytokines, and proteins which are released from adipose tissue. Certain
properties found in garlic can reduce these militants from being released from
fat cells.
Allyl isothiocyanate, a major component of garlic, inhibits
anti-inflammatory and anti-obesity effects. In obesity, adipose tissue releases
macrophages, fatty acids, and other proteins, causing increased inflammation
leading to other obesity-related complications. The problem with obesity is the
higher the obesity levels, the more macrophages are released, causing other
metabolic conditions to arise.
Allyl isothiocyanate is a phytochemical
which inhibits cellular production of major pro-inflammatory mediators. Those
mediators are:
• TNF-α - a major cytokine involved in systematic
inflammation. Higher levels lead to insulin resistance in the
body.
• Nitric oxide - produced by phagocytes from an immune response,
can also be signaled from the production of TNF-α in the body. Nitric oxide can
increase inflammation in response to certain conditions.
• MCP-1 - a
protein which recruits monocytes to areas of inflammation. Commonly found in
Rheumatoid arthritis (RA), it is found in joints and other areas of the body.
High levels of MCP-1 perpetuates the inflammation process in joints and adipose
tissue.
Allyl isothiocyanate can inhibit the production of these
inflammatory hormones. It works exceptionally well in inhibiting MCP-1 protein
found in 3T3-LI adipocytes. Of course you are probably wondering what it means,
right? Give me a minute to explain.
The body is able create new cells.
In fact, every minute cells die and the body makes new ones to replace them. In
adipose tissue, pre-adipocytes undergo a process making them full-fledged
adipose tissue, or FAT. Research shows garlic can inhibit adipogenesis, or the
process of making pre-adipocytes into adipocytes. Simple terms: garlic stops
pre-fat cells from becoming fat cells, by inhibiting the process.
This
same research also showed garlic can increase activation of brown adipose
tissue, therefore increasing thermogenesis in brown fat cells. The research
behind it is amazing!
Researchers took mice and fed them a high-fat diet
for the purpose of increasing obesity in the mice. Then they fed them the same
diet, but added 2% or 5% garlic extract mixed with the food. The group
supplemented by garlic decreased body weight and certain adipose tissue
deposits. You would expect a high-fat diet to increase fat in the blood and
plasma. When implementing garlic in the high-fat diet, there was significant
improvements in blood and plasma fat levels. Garlic reduced blood and plasma
fat levels.
The mice also had increased activity in brown adipose
tissue. Brown fat increases thermogenesis in the body. By breaking down fatty
acids, the breakdown increases energy and spares the use of ATP. In garlic-fed
mice, there was an increase in activation of uncoupling protein 1 in the brown
fat cells. This happened in the liver, white adipose tissue, and skeletal
muscle, and not just in brown fat. Result: increased body temperature when
exposed to cold temperatures. It was determined the activation of AMPK, an
enzyme responsible for cellular energy thermogenesis, increased therefore
increasing thermongenesis in brown fat tissue. They also found a decrease in
the expression of adipogenesis, or the development of pre tissue into full-fat
tissue.
Garlic is a potent nutrient used in cooking in many cultures as a
way to spice up food and increase the taste. Most people know that garlic has
powerful effects on the cardiovascular system by reducing both systolic and
diastolic blood pressure, reducing triglycerides and helping raise good
cholesterol.
Most people are unaware that garlic has anti-obesity and
anti-inflammatory effects in the body. Garlic can reduce the amount of
cytokines and macrophages released by fat tissue, which affect fat tissue and
distant areas in the body. More research is needed on the power of garlic, but
it shows promise in the fight against obesity!
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