Every
day when I counsel my patients/clients, I only get 1 question, does this really
work? I don’t like the taste, I cannot have protein shakes but will have a
proper diet….
Protein
and Diet??? Really makes me put on my thinking caps that the amount of protein
required by human body can it be attained solely through diet?? And the ANSWER
is NO.
Especially
Indian diets lack proteins always and it is filled with only CARBOHYDRATES.
Protein
shakes have been shown to help with weight loss in studies. Eating more protein
can boost metabolism while reducing hunger and appetite.
Protein
is an important nutrient for weight loss.
Getting
enough can boost your metabolism, reduce your appetite
and help you lose body fat without losing muscle.
Protein
shakes are an easy way to add more protein to your diet.
This
article explains everything you need to know about protein shakes and how they
affect your weight.
What Are Protein Shakes?
Protein
shakes are drinks made by mixing protein powder with water, although other ingredients
are often added as well like vitamins and minerals.
Although
most people don’t need them to meet daily protein requirements, they can also
be useful if you need to increase your intake for some reason.
You can
buy protein powder and mix it yourself, but you can also get many different brands
of pre-made liquid shakes.
Some of
the most popular types of protein powder on the market are:
·
Whey
protein: Quickly absorbed, dairy-based. Contains all the essential
amino acids.
·
Casein
protein: Slowly absorbed, dairy-based. Contains all essential
amino acids.
·
Soy
protein: Plant-based and contains all essential amino acids. Also
contains soy isoflavones, which may provide some health benefits.
·
Rice
protein: Plant-based and low in the essential amino acid lysine.
·
Pea
protein: Plant-based and low in the non-essential amino acids
cystine and methionine.
Protein Shakes Decrease Hunger
and Appetite
First, it increases levels of
appetite-reducing hormones like GLP-1, PYY and CCK, while reducing levels of
the hunger hormone ghrelin.
Second, protein helps you feel
full for longer.
In another, overweight men who
had been on a weight loss diet increased their protein intake to 25% of total
calories. This increase cut cravings by
60% and late-night snacking by half.
These shakes can be a convenient
way to add extra protein to your diet. However, keep in mind that too much can
still lead to excess calories.
Bottom Line: Protein can decrease your appetite by affecting your
hunger hormones. It can also help you feel full for longer, which can help you
eat less and lose body fat.
Protein Shakes May Increase
Metabolism
High protein intake can boost
your metabolism, helping you burn slightly more calories each day.
That’s in part because a high-protein
diet — especially when combined with strength training — may help you build
muscle.
This can speed up your metabolism
because muscle burns more calories than fat.
One study gave obese participants
shakes with either 200 or 0 grams of extra protein per week.
Those given the protein gained
2.8 lbs (1.3 kg) more mass following a 13-week training program.
In another study, researchers
gave participants a combination of foods and shakes providing either 0.5 g/lbs
or 1.1 g/lbs (1.2 g/kg or 2.4 g/kg) of protein per day.
After 6 weeks, those on the
higher-protein diet gained 2.4 lbs (1.1 kg) more muscle and lost 2.9 lbs (1.3
kg) more fat.
It should be noted, however, that
your ability to gain muscle during a weight loss diet may depend on the amount
of muscle you already have.
Protein can also increase
metabolism because of the amount of calories needed to digest and metabolize
it. This is known as the thermic effect of food (TEF).
For instance, 15-30% of protein
calories are burned during digestion, while only 5-10% of carb calories and
0-3% of fat calories are burned during digestion.
Bottom Line: Protein helps boost metabolism because a lot of energy is
spent digesting and metabolizing it. It also helps you build muscle, which
burns more calories than fat.
Protein Shakes May Help You Lose
Weight and Belly Fat
Researchers generally agree that
high-protein diets can help you lose more fat, especially fat from the belly area.
In one study, participants on a
diet providing 25% of calories as protein lost 10% more belly fat after 12
months than those eating half that amount.
In another, participants given an
extra 56 grams of whey protein per day had lost 5 lbs (2.3 kg) more at the end
of a 23-week study period, despite not consciously changing anything else in
their diet.
In one final study, participants
on diets providing 30% of calories from protein lost 8.1 lbs (3.7 kg) more than
those on diets providing 15% of calories from protein.
Bottom Line: Protein shakes are a convenient way to increase your
daily protein intake. This can help boost fat loss, especially from around your
mid-section.
Protein Shakes May Also Prevent
Muscle Loss and Metabolic Slowdown
Weight loss diets often cause you
to lose muscle, which can slow down your
metabolism. This makes it easier to gain all the weight back (and
more) once you go off the diet.
A high protein intake combined
with strength training can help prevent part of this muscle loss and metabolic
slowdown.
In fact, researchers reported
that participants’ metabolism decreased less on a weight loss diet providing
36% of calories as protein than on a diet providing about half that amount.
Evidence shows that consuming a
daily protein shake as part of a weight loss diet may make muscle maintenance
up to three and a half times more efficient.
A study of athletes compared
weight loss diets providing either 35% or 15% of calories from protein. Both
diets helped participants lose about the same amount of fat, but those consuming
more protein lost 38% less muscle mass.
A recent review further notes
that weight loss diets that exceed 0.5 g/lbs (1.0 g/kg) of protein per day can
help older adults retain more muscle and lose more fat.
Bottom Line: Protein shakes consumed during a weight loss diet can
help prevent muscle loss and metabolic slowdown. This is particularly effective
in combination with strength training.
Protein Shakes May Help Prevent
Weight Re-Gain after Weight Loss
Protein’s effect on metabolism,
appetite and muscle mass may also keep you from regaining the fat you worked so
hard to lose.
One study reports that participants
given more protein lost more weight and maintained their results better than
those given less.
In fact, the high-protein group
regained only 9% of the lost weight, whereas the low-protein group regained 23%.
Another study gave participants
who just completed a weight loss intervention a supplement that provided 48.2
grams of protein per day.
Participants who took the
supplement felt fuller after meals and had regained 50% less weight 6 months
later, compared to those given no supplement.
Bottom Line: Additional protein, whether from shakes or whole foods,
can help minimize the amount of weight you regain after weight loss.
Which
Type of Protein is best?
Different types of protein have
different effects on the body.
For instance, whey is more
quickly absorbed than casein, helping you feel less hungry in the short-term.
One study reports that 56 grams
of whey protein per day helped overweight and obese participants lose 5 lbs
(2.3 kg) more fat than the same amount of soy protein.
Another describes whey as 3 times
more effective at maintaining muscle-building ability during a weight loss diet
than soy protein.
That being said, not all studies
agree that whey is superior. For example, one report notes that the faster
hunger-reducing effect results in no differences in the amount of calories
consumed at meals.
Furthermore, several reviews
report equal amounts of fat loss with use of whey, soy, rice or egg-protein
supplements.
One final factor to consider is
the protein’s quality.
Whey, casein and soy contain all
the essential amino acids your body needs.
On the other hand, rice and hemp protein are
low in the essential amino acid lysine, and pea protein is also low in the
non-essential amino acids cystine and methionine.
That being said, these
deficiencies likely don’t cause a problem unless if shakes are the only source
of protein in your diet.
Also, many plant-based protein
powders mix different sources so that the mixture contains all the essential
amino acids.
Bottom Line: The exact type of protein powder you have in your shakes
should not make a major difference for fat loss. Some studies show an advantage
for whey, but the evidence is mixed.
Dosage and Side Effects
Taking 1 shake per day should be
a good way to start.
It is best to take it either
before or instead of a meal, with 1 or 2 scoops of protein powder in the shake.
Mixing it with water, ice and
perhaps a piece of fruit in a blender is a simple way to create a delicious and
satisfying shake.
These symptoms can be simply
avoided by switching to protein powders not derived from dairy, such as egg,
pea, soy, hemp or rice protein powders.
Of note, high-protein diets were
once thought to have negative impacts on kidney and bone health, but newer
research shows this is not true.
In fact, high protein intakes
were never shown to cause any kidney damage in healthy people. However,
lower-protein diets may be beneficial for those with existing kidney issues.
Protein is also an essential
nutrient for bone formation and maintenance, and reviews show that there is no
reason to restrict your intake to improve bone health.
Consult your Doctor or Dietician
on how much amount of protein you should be eating….
Bottom Line: Taking one shake per day is a good way to start, with 1
or 2 scoops of protein. Some people may experience digestive side effects.
Take Home Message
Most people can easily get enough
protein without using shakes.
That being said, these
supplements are an easy, safe and delicious way to add extra protein in your diet.
If you’re trying to lose weight,
extra protein from shakes can help you feel less hungry, help you lose weight faster and
lower the likelihood of regaining the lost fat.
So do not miss out on your
protein intake !!!