Caution is advised when taking fenfluramine; its role in weight loss is undeniable, and leptin's weight loss effects have caused a sensation in the medical community.

Why should one be cautious when using fenfluramine for weight loss?

Fenfluramine, also known as trifluoromethyl-m-phenylpropylethylamine or fluorophenylpropylamine, was once considered a star among weight-loss drugs due to its outstanding weight-loss effects.

Fenfluramine has many advantages. First, it belongs to the sympathomimetic amine class of drugs, but it does not produce the central nervous system stimulation side effect of amphetamine drugs. It also has a calming effect and is non-addictive, without psychological dependence or drug tolerance.

Secondly, it can promote the release of serotonin from nerve endings, stimulate the hypothalamic fasting center, inhibit excessive eating caused by insulin and 4-deoxyglucose, increase the dependence of peripheral tissues on insulin, promote the uptake and utilization of glucose by muscle tissue, thereby reducing the amount of glucose converted into fat in fat cells. This is an effect that can directly affect energy reserves.

Third, it can significantly affect lipoprotein metabolism, reducing serum total cholesterol, triglycerides, and low-density lipoprotein, and increasing the ratio of high-density lipoprotein, thus having an anti-atherosclerotic effect.

Fourth, it can enhance the blood pressure-lowering effects of antihypertensive drugs such as guanethidine, methyldopa, and reserpine, and also has a certain hypoglycemic effect, especially effective for obesity caused by hypertension and coronary heart disease.

Fifth, it does not cause significant damage to organs such as the heart, liver, and kidneys.

However, fenfluramine also has some side effects, such as drowsiness, nausea, dry mouth, mild dizziness and weakness, and mild abdominal pain. These side effects usually disappear after discontinuing the medication. Due to these side effects, patients with depression, those with a history of epilepsy, pregnant women, those working at heights, and drivers should use it with caution.

Recent news from the United States suggests that fenfluramine may be linked to valvular heart disease, and the US has restricted its use. Therefore, it is important to know how to use fenfluramine correctly for weight loss, and it should be used under the guidance of a doctor.

Why stepping on stones is so effective for weight loss

If you walk into a residential area or public green space, you will find pebble-paved paths where many people are doing health exercises. This is the "primitive stone-walking fitness technique" that originated from ancient civilization.

People have noticed that their previously obese bodies have become thinner and their mental state has improved while doing health exercises. Experts have discovered that stepping on stones also has unparalleled weight-loss benefits.

As experts have conducted in-depth research, it has been discovered that stepping on stones can stimulate acupoints on the soles of the feet, improve blood circulation, raise local temperature, and accelerate fat breakdown. Simultaneously, stimulating acupoints with stones can also regulate nerve and endocrine functions, inhibit the nerves in the brain that regulate appetite, reduce appetite, increase satiety, and thus achieve the effect of dieting and weight loss.

Generally speaking, if you exercise on stones for 30 minutes every day, your appetite can be reduced by about half each time. If you can persist in this exercise, you will see unexpected weight loss results.

Stone-stepping for weight loss is actually a self-administered foot massage method. It can be done wearing soft-soled cloth shoes or barefoot. Barefoot is more effective. Experts have conducted tests showing that if you persist in stepping on stones for 30 minutes every day, you can lose 10-15 kilograms after one year.

The biggest advantage of stepping on stones is that it is simple and easy to do. There is no burden or pressure of exercise, and you can easily complete a day's work. Not only are you not tired, but you are also in great spirits. Even if you exercise day after day, you will not feel bored, which is conducive to long-term persistence.

Why did the discovery of leptin cause such a sensation in the medical community?

The discovery of leptin dates back to 1994 when scientists isolated the obesity gene from obese mice. This gene also exists in the human body and has the function of synthesizing fat, causing people to gain weight.

Interestingly, it also secretes a hormone that is the opposite of the obesity gene, causing obese people to lose weight, hence its name leptin. The discovery of leptin caused a sensation in the medical community.

In 1999, scientists began using leptin to treat obese patients and found that leptin's weight loss function did exist and was very effective. Its efficacy was directly proportional to the dosage of leptin. After a one-month trial on 123 obese individuals, it was shown that those who used 0.01 mg daily lost an average of 2.4 kg, while the highest dose of 0.30 mg resulted in an average weight loss of 7 kg, and almost all of the weight loss was fat.

So where does leptin come from, and how does it work? Leptin is primarily produced by fat-storing cells. It mainly works by increasing leptin concentration in the blood and brain, thereby suppressing hunger and accelerating the body's metabolism.

Therefore, leptin acts directly on the brain, sending timely messages to the brain to remind the central nervous system that controls eating, informing the body that fat is saturated and requesting that the eating switch be turned off, or informing the body that weight has decreased and fat content has reduced and requesting that the switching switch be turned on again.

However, when the body's fat decreases, the amount of leptin also decreases, and its function of transmitting information weakens.

However, leptin doesn't always work perfectly; sometimes it can go awry. For example, some obese individuals have high leptin levels and are constantly producing new leptin. But after using leptin, instead of losing weight, they continue to gain weight.

Scientists have discovered that leptin's biological signals are not very sensitive. Although a large amount of leptin circulates in the blood, its effect is very limited.

While leptin is highly effective for weight loss, it is, after all, a hormone and may have some adverse effects, making its use somewhat counterproductive. However, it is believed that with further research, these side effects can be overcome.