11 Proven Health Benefits of Garlic

kaylog (45)in #health • 7 years ago

"Let food be thy medicine, and medicine be thy food."

Those are famous words from the ancient Greek physician Hippocrates, often
called the father of Western medicine.

He actually used to prescribe garlic to treat a variety of medical conditions.
Well... modern science has recently confirmed many of these beneficial health
effects.

Here are 11 health benefits of garlic that are supported by human research
studies.

Garlic is a plant in the Allium (onion) family.
It is closely related to onions, shallots and leeks.
It grows in many parts of the world and is a popular ingredient in cooking
due to its strong smell and delicious taste.

However, throughout ancient history, the main use of garlic was for its
health and medicinal properties ( 1 ).

Its use was well documented by all the major civilizations... including the
Egyptians, Babylonians, Greeks, Romans and the Chinese ( 2 ).

The entire "head" is called a garlic bulb, while each segment is called a
clove.
There are about 10-20 cloves in a single bulb, give or take.
We now know that most of the health effects are caused by one of the
sulfur compounds formed when a garlic clove is chopped, crushed or chewed.

This compound is known as allicin, and is also responsible for the distinct
garlic smell.

Allicin enters the body from the digestive tract and travels all over the
body, where it exerts its potent biological effects (which we'll get to in a bit)

BOTTOM LINE:

Garlic is a plant in the onion family, grown for its cooking
properties and health effects. It is high in a sulfur compound called
Allicin, which is believed to bring most of the health benefits.

Garlic Is Highly Nutritious, But Has Very Few
Calories

Calorie for calorie, garlic is incredibly nutritious.
A 1 ounce (28 grams) serving of garlic contains ( 3 ):
Manganese : 23% of the RDA

Vitamin B6 : 17% of the RDA

Vitamin C : 15% of the RDA

Selenium: 6% of the RDA

Fiber: 0.6 gram

Decent amounts of calcium, copper, potassium, phosphorus, iron and
vitamin B1

Garlic also contains trace amounts of various other nutrients. In fact, it
contains a little bit of almost everything we need.

This is coming with 42 calories , with 1.8 grams of protein and 9 grams of
carbs.

BOTTOM LINE:

Garlic is low in calories and very rich in Vitamin C, Vitamin B6 and
Manganese. It also contains trace amounts of various other nutrients.

Garlic Can Combat Sickness, Including the Common
Cold

Garlic supplementation is known to boost the function of the immune
system.

One large 12-week study found that a daily garlic supplement reduced the
number of colds by 63% compared with placebo ( 4).

The average length of cold symptoms was also reduced by 70%, from 5 days
in placebo to just 1.5 days in the garlic group.

Another study found that a high dose of garlic extract (2.56 grams per day)
can reduce the number of days sick with cold or flu by 61% ( 5 ).

If you often get colds, then adding garlic to your diet could be incredibly
helpful.

BOTTOM LINE:

Garlic supplementation helps to prevent and reduce the severity of
common illnesses like the flu and common cold.

The Active Compounds in Garlic Can Reduce Blood
Pressure

Cardiovascular diseases like heart attacks and strokes are the world's biggest
killers.

High blood pressure, or hypertension, is one of the most important drivers of
these diseases.

Human studies have found garlic supplementation to have a significant impact
on reducing blood pressure in people with high blood pressure ( 6, 7 , 8 ).

In one study, aged garlic extract at doses of 600-1,500 mg was just as
effective as the drug Atenolol at reducing blood pressure over a 24 week
period ( 9).

Supplement doses must be fairly high to have these desired effects. The
amount of allicin needed is equivalent to about four cloves of garlic per day

BOTTOM LINE:

High doses of garlic appear to improve blood pressure of those with
known high blood pressure (hypertension). In some instances,
supplementation can be as effective as regular medications.

Garlic Improves Cholesterol Levels, Which May
Lower the Risk of Heart Disease

Garlic can lower total and LDL cholesterol.
For those with high cholesterol, garlic supplementation appears to reduce
total and/or LDL cholesterol by about 10-15% ( 10 , 11, 12 ).

Looking at LDL (the "bad") and HDL (the "good") cholesterol specifically,
garlic appears to lower LDL but has no reliable effect on HDL ( 6, 7, 13, 14 ,
15 ).

Garlic does not appear to lower triglyceride levels, another known risk
factor for heart disease ( 10 , 12).

BOTTOM LINE:

Garlic supplementation seems to reduce total and LDL cholesterol,
particularly in those who have high cholesterol. HDL cholesterol and
triglycerides do not seem to be affected.

Garlic Contains Antioxidants That May Help Prevent
Alzheimer's Disease and Dementia

Oxidative damage from free radicals contributes to the aging process.

Garlic contains antioxidants that support the body's protective mechanisms
against oxidative damage ( 16) .

High doses of garlic supplements have been shown to increase antioxidant
enzymes in humans ( 5, 17 ), as well as significantly reduce oxidative stress in
those with high blood pressure ( 6).

The combined effects on reducing cholesterol and blood pressure, as well as
the antioxidant properties, may help prevent common brain diseases like
Alzheimer's disease and dementia ( 17 , 18 ).

BOTTOM LINE:

Garlic contains antioxidants that protect against cell damage and
ageing. It may reduce the risk of Alzheimer's disease and dementia

Garlic May Help You Live Longer

Effects on longevity are basically impossible to prove in humans.

But given the beneficial effects on important risk factors like blood
pressure, it makes sense that garlic could help you live longer.

The fact that it can fight infectious disease is also an important factor,
because these are common causes of death, especially in the elderly or
people with dysfunctional immune systems.

BOTTOM LINE:
Garlic has known beneficial effects on common causes of chronic
disease, so it makes perfect sense that it could help you live longer.

Athletic Performance Can Be Improved With Garlic
Supplementation

Garlic was one of the earliest "performance enhancing" substances.

It was traditionally used in ancient cultures to reduce fatigue and enhance
the work capacity of labourers.

Most notably, it was administered to Olympic athletes in ancient Greece ( 19 ).

Rodent studies have shown that garlic helps with exercise performance, but
very few human studies have been done.

Subjects with heart disease that took garlic oil for 6 weeks had a reduction
in peak heart rate of 12% and improved their exercise capacity ( 20 ).

However, a study on nine competitive cyclists found no performance benefits
( 21).
Other studies suggest that exercise-induced fatigue may be reduced with garlic

BOTTOM LINE:
Garlic can improve physical performance in lab animals and people with
heart disease. Benefits in healthy people are not yet conclusive.

Eating Garlic Can Help Detoxify Heavy Metals in the
Body

At high doses, the sulfur compounds in garlic have been shown to protect
against organ damage from heavy metal toxicity.

A four week study in employees of a car battery plant (excessive exposure
to lead) found that garlic reduced lead levels in the blood by 19%. It also
reduced many clinical signs of toxicity, including headaches and blood
pressure ( 22).

Three doses of garlic each day even outperformed the drug D-penicillamine in
symptom reduction.

BOTTOM LINE:
Garlic was shown to significantly reduce lead toxicity and related
symptoms in one study.

Garlic May Improve Bone Health

No human trials have measured the effects of garlic on bone loss.

However, rodent studies have shown that it can minimise bone loss by
increasing estrogen in females ( 23 , 24 , 25, 26 ).

One study in menopausal women found that a daily dose of dry garlic
extract (equal to 2 grams of raw garlic) significantly decreased a marker of
estrogen deficiency ( 27).

This suggests that this garlic may have beneficial effects on bone health in
women.

Foods like garlic and onions have also been shown to have beneficial effects
on osteoarthritis ( 28).

BOTTOM LINE:
Garlic appears to have some benefits for bone health by increasing
estrogen levels in females, but more human studies are needed.

Garlic Is Easy to Include in Your Diet and Tastes
Absolutely Delicious

The last one is not a health benefit, but still important.
It is the fact that it is very easy (and delicious) to include garlic in your
current diet.

It complements most savory dishes, particularly soups and sauces. The strong
taste of garlic can also add a punch to otherwise bland recipes.

Garlic comes in several forms, from whole cloves and smooth pastes to
powders and supplements like garlic extract and garlic oil.

The minimum effective dose for therapeutic effects is one clove eaten with
meals, two or three times a day.

However, keep in mind that there are some downsides to garlic, such as bad
breath. There are also some people who are allergic to it.

If you have a bleeding disorder or are taking blood thinning medications, then
talk to your doctor before increasing your garlic consumption.

The active compound allicin only forms when garlic is crushed or cleaved
when it is raw. If you cook it before crushing it, then it won't have the
same health effects.

Therefore, the best way to consume garlic is raw, or to crush and cut it
and leave it out for a while before you add it to your recipes.

My favorite way to use garlic is to press a few cloves of fresh garlic with
a garlic press, then mix with extra virgin olive oil and a bit of salt. This a
healthy and super satisfying dressing.