Yogurt products are currently a highly popular dairy item on the market. Some claim yogurt aids weight loss, prompting many to consume it, while others assert it treats constipation, leading numerous constipated individuals to drink it. So what are yogurt's actual benefits? Does it truly help with weight loss and constipation as claimed?
Yogurt is a dairy product made from milk that undergoes pasteurization. Beneficial bacteria (starter cultures) are then added to the milk, which is fermented before being cooled and packaged. Currently, most yogurt products on the market fall into three main categories: set-style, stirred-style, and fruit-flavored varieties with added fruit juices or jams.Yogurt not only retains all the benefits of milk but also enhances certain aspects through processing, making it a more suitable nutritional supplement for humans.
Nutritional Value
The fermentation process breaks down approximately 20% of the milk's carbohydrates and proteins into smaller molecules (such as galactose, lactic acid, small peptide chains, and amino acids). Milk fat content typically ranges from 3% to 5%.After fermentation, the fatty acids in milk can increase by up to 2 times compared to raw milk. These changes make yogurt easier to digest and absorb, enhancing the utilization rate of various nutrients. Yogurt is fermented from pure milk, retaining all the nutritional components of fresh milk. During fermentation, lactic acid bacteria also produce multiple vitamins essential for human nutrition, such as VB1, VB2, VB6, and VB12.
Benefits
First, it breaks down milk's lactose and proteins, making them easier for the body to digest and absorb.
Second, yogurt promotes gastric juice secretion, enhances appetite, and aids digestion.
Third, lactic acid bacteria reduce the production of certain carcinogens, offering cancer-preventive effects.
Fourth, it inhibits the proliferation of putrefactive bacteria in the intestines and reduces the toxins they produce.
Fifth, it helps lower cholesterol, making it particularly suitable for individuals with high blood lipids.
Sixth, patients recovering from surgery or acute/chronic illnesses often undergo antibiotic treatment or injections to combat disease or prevent infection. This significantly alters the intestinal flora, suppressing or even eliminating beneficial bacteria and causing dysbiosis.Yogurt contains abundant lactic acid bacteria. Consuming 0.25–0.5 kilograms daily helps maintain normal intestinal flora balance and regulates beneficial bacteria to optimal levels. Thus, for those recovering from serious illness, yogurt offers irreplaceable benefits for physical restoration. It is therefore most essential for individuals recovering from prolonged illness.
Beyond its nutritional richness, yogurt's lactic acid bacteria confer health benefits. These include:
Maintaining the ecological balance of intestinal flora, forming a biological barrier that inhibits harmful bacteria from invading the gut.
Promoting intestinal motility and preventing constipation by producing large amounts of short-chain fatty acids and altering osmotic pressure through extensive bacterial growth.
Yogurt contains multiple enzymes that effectively enhance the body's digestion and absorption of nutrients.
By inhibiting the growth of saprophytic bacteria in the intestines, yogurt suppresses the production of toxins from food decay. This protects the liver and brain from these toxins, helping prevent aging.
By inhibiting the growth of putrefactive bacteria and certain harmful bacteria in the gut, yogurt also suppresses carcinogenic factors produced by these microorganisms, thereby achieving cancer prevention.
It enhances human immune function. Lactic acid bacteria produce substances that boost immunity, helping prevent disease. Yogurt rich in active cultures can improve conditions such as lactose intolerance, constipation, diarrhea, enteritis, and Helicobacter pylori infection.
Researcher Jean Mayer at the USDA Human Nutrition Research Center at Tufts University, which conducts geriatric studies, states that yogurt not only improves gut health but also boosts immunity.
Coincidentally, a Taiwanese study also found that yogurt can enhance the therapeutic effects of certain anti-inflammatory drugs.
Yogurt can lower blood pressure. Dr. Alvaro Alonso, an epidemiology researcher at Harvard University's School of Public Health, explained that studies show individuals consuming 2–3 servings or more of yogurt daily have a 50% lower risk of developing hypertension compared to non-consumers.
Benefits
This "milk factor" inherently lowers blood lipids and cholesterol while inhibiting fat absorption. Yogurt also contains lactic acid, which effectively suppresses the proliferation of putrefactive bacteria in the intestines, inhibits harmful substance production, and promotes intestinal peristalsis, making it highly valuable for weight loss.[3-4]
Yogurt is considered an excellent weight-loss food due to its rich lactic acid bacteria content. Once in the intestines, these bacteria promote the growth of bifidobacteria while suppressing harmful bacteria, thereby improving gut health and effectively treating chronic constipation.
Additionally, as a dairy product, yogurt's calcium reduces parathyroid hormone levels. This hormone inhibits enzyme activity, slowing the body's fat-burning process.
Weight Loss Effects
The protein in fermented milk remains intact, and calcium content is preserved. Yogurt actually supplements calcium more effectively than other calcium sources.Most exciting for women seeking weight loss is that B vitamins—crucial for fat burning—increase during fermentation. Yogurt provides strong satiety, leaving you feeling full while offering rich nutrition: carbohydrates, fats, proteins, and various vitamins—all with low calories. Drinking a small cup before meals can reduce your overall food intake.Yogurt can even replace multiple meals to curb hunger. Rich in active lactic acid bacteria and short-chain fatty acids, it promotes intestinal motility, alleviating constipation and supporting weight loss. Common Misconceptions 1. Yogurt drinks do not aid weight loss Yogurt is made by fermenting high-quality milk with lactic acid bacteria, essentially falling under the category of milk. Yogurt drinks, however, are merely beverages and not milk.Drinking yogurt aids weight loss, while yogurt drinks can backfire. Typically, yogurt drinks contain excessive added sugars. Thus, relying on them for weight loss leads to excessive calorie intake.
2. Low-fat yogurt is more effective for weight loss
Yogurt can aid weight loss, but for better results, choose low-fat varieties. Excessive fat intake is a major cause of obesity. Low-fat yogurt contains calcium that helps accelerate fat burning without causing excessive fat consumption, making it highly beneficial for healthy weight loss.
3. Don't Overindulge in Yogurt for Weight Loss
Don't assume yogurt is a weight-loss miracle and start guzzling it. Moderation is key with any food. Excessive yogurt consumption can lead to hyperacidity, affecting gastric mucosa and digestive enzyme secretion while reducing appetite. Those prone to hyperacidity, chronic spleen-stomach deficiency, or bloating should especially avoid overconsumption.For healthy individuals, about 250 grams daily is appropriate.
4. Yogurt alone won't make you slim
Yogurt is indeed a weight-loss superfood—delicious and fat-burning. However, relying solely on yogurt for weight loss is unscientific. It not only slows your metabolism when you resume normal eating but also causes nutritional imbalances, harming both health and weight management.
5. Yogurt fasting doesn't lead to weight loss
Yogurt fasting is a popular weight loss method, but popularity doesn't equate to effectiveness. Healthy eating is the true path to weight loss. When calorie intake is insufficient, the body enters a self-preservation mode, converting consumed calories into stored fat—making weight loss impossible!
6.Enjoying yogurt as a late-night snack
Eating too much at night with insufficient exercise prevents calories from being fully burned off, leading to obesity over time. Therefore, eating less in the evening is a highly effective weight loss strategy. However, to prevent evening energy deficits, you can enjoy some low-fat yogurt after dinner. It increases satiety while reducing calorie intake.
7. Salty yogurt can make you gain weight
The sodium in salted yogurt causes water retention, increasing body weight. Not only does it fail to aid weight loss, but it can actually make you gain more weight. Studies show that daily salt intake should not exceed 6g. Beyond regular meals, the salted yogurt diet leads to excessive sodium consumption, making it one of the beverages that hinder weight loss.
8. Yogurt is an excellent helper for wrinkle reduction and skin care
Yogurt contains lactic acid and other organic acids like citric acid. Its diluted solution has significant antibacterial and preservative effects, earning it the reputation as a "cleanser" for mucous membranes. It helps soften the skin's sticky surface layer and remove dead cells. As yogurt is digested and absorbed, facial wrinkles gradually diminish.The vitamins A, E, and carotene in yogurt prevent skin keratinization and dryness, leaving skin fair, supple, and radiant while reducing wrinkle formation.
9. More isn't necessarily better
Many people enjoy yogurt so much they treat it like a beverage, consuming several bottles daily. Experts emphasize that more yogurt isn't always better, especially for yogurt marketed as a health food, where portion control is crucial. Health foods are functional foods with specific benefits and shouldn't be consumed in large quantities like regular foods. Pay attention to the appropriate audience and usage guidelines, and avoid overconsumption.
10. Avoid on an empty stomach; consume after meals
Those with excessive stomach acid should avoid drinking yogurt before meals. Since stomach acid has antibacterial properties, it's best not to consume probiotic-rich yogurt on an empty stomach. Generally, drinking it after meals yields better results.However, unless extremely hungry, the stomach typically contains some food before meals rather than being completely empty. Stomach acid levels are also not excessively high, so not all lactic acid bacteria are necessarily killed. Furthermore, modern yogurt has lower acidity and higher sugar content. Combined with the protective effects of proteins and pectin, it generally does not cause significant irritation to the stomachs of healthy individuals.
11. Refrigerate Only, Never Heat
Many recognize yogurt's countless beneficial bacteria but overlook how to preserve them. Professor Nan Qingxian explains that freshly produced yogurt contains live cultures, which only refrigeration can effectively retain. Heating yogurt to drink is particularly wasteful.
12. Add fruit yourself for fruit-flavored yogurt
Experts advise that if you wish to enhance yogurt's flavor, consider adding ingredients at home. Fruit pieces, jams, and purees undergo multiple processing steps, making them less natural than fresh fruit. To enrich yogurt's taste, simply chop fresh fruit and mix it in.
13. Thicker isn't always better for yogurt
Many consumers believe thicker yogurt is superior, but in reality, many thick yogurts achieve this consistency through added thickeners like hydroxypropyl distarch phosphate, pectin, or gelatin. While excessive thickeners may satisfy texture preferences, they offer no health benefits.
Enjoy a large cup of yogurt (about 200ml) with a slice of whole-grain bread or a bowl of oatmeal. Opting for low-sugar or low-fat yogurt (1.0–1.5% fat content) is certainly acceptable. If unavailable, regular yogurt with protein content >2.3% is also fine. Avoid products with protein content <1.0%, as these are not true yogurt.
Dietary Guidelines
Never consume yogurt on an empty stomach, as lactic acid bacteria are easily killed under fasting conditions, diminishing its health benefits.
Avoid heating yogurt before consumption, as heating causes significant loss of beneficial probiotics, reducing nutritional value and altering taste.

The milk quantity should suffice for two days, approximately 500ml. Preparing larger batches leads to prolonged storage, causing yogurt to become overly sour and unpalatable.
Prepare only enough milk for two days' consumption—approximately 500 milliliters. Excessive batches left too long will become overly sour and unpalatable.
Opt for commercially available refrigerator/microwave-safe storage containers, as their airtight seal helps prevent spoilage.
Avoid adding sugar during fermentation; sweeten to taste when serving for optimal flavor.
Yogurt's Versatile Uses
1. Leather Restoration: Polish dull leather goods like bags or shoes with yogurt to restore shine and repair cracks.Tip: Avoid using colored yogurt.
2. Wood Furniture & Floor Care: Replace polish by dripping yogurt onto wooden furniture or floors. Buff with a soft cloth to remove grime and restore shine. It also moisturizes wood during dry autumn months.
Tip: Rinse with water afterward to remove any lingering dairy scent.
3. Plant Care: Dilute with water and spray onto potted plants to enrich soil nutrients.Tip: Wipe with clean water afterward to remove any lingering dairy scent.
3. Plant Fertilizer: Dilute with water and pour into flower pots to nourish plants and flowers.Tip: Use sparingly and infrequently—twice weekly is sufficient.
4. Cockroach trap: Place leftover yogurt in a bottle or container in corners overnight. Check for sticky "trophies" the next day.
Tip: Leave sufficient yogurt for high viscosity. Use deep containers to trap cockroaches and prevent escape.