Dr. White

  One trick to quickly determine Expired 1 day can not eat First, the answer: Food with a long shelf life, the difference between "one day before expiration" and "one day after expiration" is not significant; Short shelf-life food, risky, throw away don't eat it! Food with a shelf life of 6 months or more is generally referred to as "long shelf life food"; Food with a shelf life of 30 days or less is called "short shelf life food"; If the shelf life is between 30 days and 6 months, it is recommended to be cautious and treat it as short shelf life. It's all the same food, so why should we treat it differently? The key factor is - microorganisms. "Long-shelf-life foods" are usually sterilized, or the food itself is not in an environment suitable for microbial growth. For this type of food, such as canned food, cookies, nuts, etc., there is little difference between "one day expired" and "one day left to expire"

  Want to use coffee to refresh to see the right time Think about it, are you used to dry a cup of coffee when you are sleepy ? Wrong! Want to use coffee to refresh, you have to drink before the sleepy ! Why? Let's first look at how people get sleepy . Our daily work consumes energy and our body produces some daze - adenosine. It is the source of sleepiness. As working hours continue to increase, adenosine more and more, and will bind with the receptors on the brain. Then the idea of sleepiness prevention is clear, blocking adenosine and receptor binding As it happens, coffee has a psychotropic agent - caffeine. The structure is very similar to adenosine, so it can occupy the receptor before adenosine, leaving adenosine with no "bed space" to stare at. Adenosine can not bind to the receptor, the brain does not receive fatigue signals, so we can continue to mental. Generally about 45 minutes after drinking coffee, 99% of the caffeine starts to work, with a half-life of abo

  How can fungus, which is invisible to the naked eye, "steal" the skin and nails step by step before your eyes? How to cure fungal infections that cause beriberi and Onychomycosis? Fungi are common in the environment and can cause infections First of all, it is important to know that our skin is not as "clean" as it looks to the naked eye. In fact, the human skin surface hosts countless microorganisms, including bacteria, viruses, and of course, fungi. Under normal circumstances, people and bacteria, fungi and other microorganisms live in harmony. However, some microorganisms can cause infections, and the result of these infections is foot odor and gray nails. The scientific name for athlete's foot is tinea pedis, and the scientific name for gray nails is onychomycosis or nail fungus, and they are mainly infected by the fungus "dermatophytes". After the fungus infected your body What did it do? There is no doubt that dermatophytes 'eat' skin a

  Studies have also found a pattern: people who "eat out" more are, on average, sicker and live shorter lives. In 2021, a study in the United States counted 35,084 adults. Among them, those who ate takeout two or more meals a day had the highest risk of death during the study period (1999 to 2014). They had 1.49 times the all-cause mortality, 1.18 times the cardiovascular mortality and 1.67 times the cancer mortality compared to those who ate out less than 1 meal per week Eating out all the time is unhealthy, which is probably in line with many people's intuition. But what is so mysterious about restaurant and take-out food that it can be so much less healthy than at home? The obvious answer is that take-out food is made with more oil, salt, calories, and possibly hidden harmful substances such as gutter oil. This is true. But high oil and salt, high calories, are not the only hazards of "eating out", even if you choose healthy dishes as much as possible, you c

  How about if you just do not exercise all the time? Those who do not exercise for a long time, what happened to them? When we have just stopped exercising: Stealing lazy, really comfortable It's true that when you don't exercise for a while, you feel better. I just stopped exercising for a period of time, but my body feels better, and the whole person is still fresh. As soon as you stop exercising , a series of changes in your body that are not easily noticeable from the outside come into play. Caloric demand decreases, and mitochondria, a part of the body's "energy station" that converts energy, begin to shut down. There are also changes in the metabolism of fat, which is the fuel. Even if you don't exercise for just two days, your body's low-density lipoprotein cholesterol (LDL-C) levels may rise by 10%, and high LDL-C levels carry the risk of cardiovascular disease. LDL-C concentration over time in the non-exercise group (top line) in the study Aft

Wake up early and don't get enough sleep I don't like who I see Adequate sleep can cure a day, while lack of sleep, with a day may not be able to cure. Studies show that when sleep deprived, the brain is more inclined to interpret other people's expressions negatively. Simply put: it's not good to look at anyone. It is clear that there is no emotional "neutral expression face", people who have not slept enough will mostly interpret it as "threatening". In other words, when you go to bed late and wake up early resulting in sleep deprivation, you will feel that other people are more threatening, less trustworthy and more likely to be hostile to others. Just not enough sleep Grumpy When you don't get enough sleep, you are more likely to get into conflict with others. It's like a powder keg, a little goes a long way. This is related to the activity of the amygdala and prefrontal cortex . The amygdala and prefrontal lobes are two structures in

  It is human nature to refuse sweets, and modern people are really afraid of gaining weight, and eating too much sugar can bring many health problems. So sugar substitutes have become the perfect choice for many people: they are "sweet free" and low in calories, which is a two-for-one choice for many people. But although sugar substitutes are good, you can't be greedy. For example, erythritol is a widely used sugar substitute in many sugar-free drinks and foods. Recent studies have found that although it is low in calories, it can increase the risk of cardiovascular disease to some extent. Sugar substitute, not a perfect substitute for sugar A recent paper published in the journal Nature Medicine confirms that there may be a causal link between the intake of polyol sweeteners, particularly erythritol, and increased cardiovascular risk. In separate studies conducted in the United States and Europe, covering 2982 individuals at high cardiovascular risk, erythritol intake

  At the beginning of exercise: muscle soreness Many people assume that the soreness after exercise is due to lactic acid buildup. But this soreness has a specialized medical name: delayed onset muscle soreness ( DOMS ). Researchers have found that lactic acid returns to its previous level soon after exercise, and that soreness is more likely to come from microtrauma to the muscle fibers and secondary inflammation. It tends to hit 12 to 48 hours after strenuous exercise and then disappears after 2 to 10 days. Micro-trauma of muscle fibers is a sure way for muscles to get stronger. As the saying goes, you can't get stronger without breaking down, and this is true in the body. As your body gradually adjusts to the intensity and duration of the exercise, the soreness decreases and the sweetness that comes after the pain begins to appear. First is the increase in resting metabolic rate. That is, the rate at which calories are burned when used only to be to maintain basic physiological

  Consistently apply body lotion What will happen to my skin? As we all know, many parts of the body do not produce much oil compared to the skin on the face. Especially the front side of the calf, which is the hardest hit by dryness. What changes can be made in just one week? Come  hold on to your seat, we take you in 400 times the lens to watch the results of the experiment. After 7 days, the left leg, which had continuously applied body lotion, had moisturized cuticles and significantly reduced flaking. On the other hand, the right leg, which had been "cut off" for 7 days, was a patchy mess. When I touched it, I felt a little bit sad that I have a different life from my mother. Body Lotion How does it make the skin look better? Our skin is protected against external stimuli and damage by the skin barrier consisting of the stratum corneum + sebum membrane. Stratum corneum: like a 'brick wall' Sebum membrane: like a 'waterproof membrane' As we age, oil secre

  An article published Feb. 16 in the subjournal Nature found that some women are more likely to put on a small belly, which is actually influenced by genes. New study reveals fat belly gene The research team first compared the genomes of hundreds of people to identify genes associated with obesity and high Waist-to-Hip Ratio . The  Waist-to-Hip Ratio  is a good indicator of abdominal fat, and the higher the ratio the less healthy it is. After genetic analysis, they targeted genes associated with 91 genes that help regulate fat distribution primarily in women. One gene in particular caught the researchers' attention as having the strongest association with waist-hip height in women ----SNX10 Although men also express this gene, it does not affect the waist-to-hip ratio in men. After various verifications, it is true that this gene is the biggest suspect in causing abdominal obesity in women! First, this gene has the ability to control the growth and deposition of fat cells . When f

  Who is best suited to write about the topic of 'female menopause '? Naturally, women who have gone through menopause , such as Susan P. Mattern, a researcher in history at the University of Georgia in the United States, who has written a book, The Slow Moon Climbs: The Science, History, and Meaning of Female Menopause . Susan Mattern wants to challenge the 'common sense' about menopause. Is menopause really a disease? Is it possible that the early loss of fertility in women is not a 'mistake', but an 'advantage'? Menopause is an evolutionary advantage Of all the animals in the world, only three are known to have menopause - orcas, short-finned pilot whales, and humans. The rest of the animals can reproduce until they die. Take our close relative, the chimpanzee, for example. Chimpanzee fertility peaks at 25 to 30 years of age and then gradually declines, reaching zero at about age 50. But 50 years is also about the limit of chimpanzee lifespan; in the