Science proves that these five weight loss foods are useless

When searching on Google for the phrase 'weight loss', there was no natural food supplement introduced with the weight loss effect that many people don't know about the real damage. Scientists have proven that the following five functional foods are not as effective as weight loss as advertised.

1. Raspberry extract

Raspberry ketone contains the chemicals found in red raspberries that are introduced as weight loss tablets.

A study in fat mice found that this extract from raspberries reduced the total amount of fat on their body. In another study, 70 obese adults used weight loss diets, exercise programs and randomly selected a weight loss aid like raspberry ketone or caffeine, garlic or A placebo had no effect.

Only 45 participants completed the study. Of these, 27 supported users lost about 1.9 kg compared to 400 grams in the 18 placebo group. The dropout rate is very high so the results need to be interpreted very carefully.

A small trial study of five adults found no effect on weight when participants were asked to keep their current diet and exercise routine and supplemented with only 200 mg of ketone. Raspberry a day.

There have been concerns raised about the potential toxic effects of raspberry ketones on the heart and reproduction.

Verdict: Don't buy raspberry ketones and use that money to buy foods containing this substance, including berries like ki-wi, peaches, grapes, and fresh apples.

2. Matcha green tea powder

Matcha is a type of green tea made from the leaves of Camellia sinensis or tea tree, but it is processed into green tea powder and can be mixed with liquid drinks or food.

Matcha green tea powder does not support weight loss as rumored.

Before the leaves are harvested, the tea is darkened for several weeks. This causes it to increase theanine and caffeine content.

There are no studies examining the effects of matcha in weight loss. A review of six studies using green tea for weight loss over 12 weeks showed differences for each country. In studies outside of Japan, green tea users did not lose weight.

In eight studies conducted in Japan, average weight loss ranged from 200 grams to 3.5 kg with green tea.

Verdict: So far, no studies have examined whether matcha tea can reduce weight.

3. Garcinia cambogia berries

Garcinia cambogia is a tropical fruit, belonging to the grapefruit family, containing a large amount of Hydroxycitric Acid (HCA) which is thought to have weight loss effects.

In animal studies, HCA interferes with the synthesis of common fatty acids. If this goes to humans, it could theoretically make it harder to metabolize fat and speed up weight loss. But human studies have shown that it doesn't work.

In a 12-week trial of overweight women on a low-diet diet, with or without HCA, the HCA group lost more weight (3.7 kg compared to 2). , 4 kg in those not using HCA), two other trials showed no difference in weight loss.

A 12-week trial of 135 men and women found that there was no difference in weight loss between the HCA group (3.2kg) and the placebo group (4.1kg).

A 10-week trial of 86 men and women who were overweight and randomized using Garcinia cambogia or placebo extract, but not using a weight-loss meal showed the lowest reduction of 650 grams for 680 grams, there was no difference between the two groups.

Verdict: Garcinia cambogia has no effect on weight loss.

4. Use caffeine

Coffee has been claimed to speed up your metabolism and thereby speed up weight loss.

Scientific studies on volunteers who have a healthy weight state show that caffeine use increases metabolism but it is dose-dependent. Using more caffeine increases your metabolic rate.

The lowest amount of caffeine used is 100 mg equal to the amount in a cup of instant coffee, which increases the average metabolic rate by an additional 9 calories per hour, while the intake of 400 mg is equivalent to 2 to 3 cups of coffee, speed up your metabolism by about 34 calories in an hour, lasting for three hours.

If overweight adults are used with 8mg of caffeine per kilogram of body weight, the metabolic increase is about 16% in three hours.

When obese adults were supplemented with caffeine at a dose of 8 milligrams per kilogram of body weight, there was an increase in metabolic rate of about 16% for up to three hours.

In a study with overweight adults who were told to pursue a weight loss meal, then randomly taking 200 mg of caffeine three times a day or taking a placebo supplement, there was no difference in changing weight between groups.

During the first eight weeks, the caffeine supplement group experienced side effects such as insomnia, tremors and dizziness.

Verdict: Caffeine accelerates metabolism in the short term but does not speed up weight loss.

5. Alkaline water

Alkaline products are widely advertised. These include alkaline water, alkaline powders and alkaline diets.

You should measure the acidity of urine and / or saliva to "assess" the acidity of the body. Urine usually has a slightly acidic pH (average of about pH6) - vegetables and fruits make it more alkaline, while eating meat makes it less.

Saliva has a neutral pH of 7. Alkaline diets recommend adjusting what you eat based on the pH of urine or saliva, they claim a more alkaline pH helps digest, lose weight, and happy.

But your stomach is highly acidic at a pH below 3.5, with this acid helping to break down food. It then moves into the small intestine for digestion and absorption, in which the pH increases from 4.5 to 5.0, which is still acidic.

The human body has well-controlled pH balancing mechanisms to ensure blood pH is between 7.35 - 7.45, otherwise it will be fatal.

On the positive side, a high-alkaline diet promotes healthier eating by promoting plant-based foods like fruits and vegetables. There is some evidence that using fewer animal-based foods contributes to acid intake is associated with better long-term health.

Verdict: There is no scientific evidence to support the use of powder or alkaline water to accelerate weight loss.

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