
Testosterones are hormones that are found in humans, as well as other animals. It is the most common hormone in men, which helps with their growth, physical features and muscle mass. In men, the testicles are the primary producer of this hormone. Women also produce testosterone in their ovaries, however, the amount is much smaller. This is why testosterone is known as "male hormones" and increased levels of "male hormones" in women may lead to hormonal imbalance.
The production of testosterone usually increases during puberty and dips after the age of 30. It is associated with sex drive and plays an important role in sperm production and affects bone and muscle mass, the way men store fat in their body and red blood cell production. It can also affect a man's mood.
For the longest time, especially in the ancient texts, it was believed that testosterone is the reason why men have a shorter life span. In fact, a paper published by Kyung-Jin Min, Cheol-Koo Lee and Han-Nam Park in 2012, titled The Lifespan of Korean Eunuchs states that neutered animals and Korean eunuchs had longer life spans due to less production of testosterone. However, a recent study by a team at the University of Western Australia titled Associations of Testosterone and Related Hormones With All-Cause and Cardiovascular Mortality and Incident Cardiovascular Disease In Men, published in Annals of Internal Medicine, questions the old findings.
The study followed men for five years and found that participants with the lowest testosterone levels were more likely to die. While the cause of death was not directly related to the hormone, upon deeper analysis, it was found that men who died were mostly experiencing some sort of heart disease. This is also the leading cause of death in men, globally.
The interesting observation is that it could be linked to erectile dysfunction and the inability to get enough blood pumped to keep an erection firm enough for sex. This usually occurs earlier than the symptoms of heart diseases show up, and thus, it could act as an early warning sign of existing heart problems.
The researchers gathered 11 studies with 24,000 people to see how testosterone level had an influence men and their life span. The men from the selected studies previously had their total testosterone measured using mass spectrometry; followed for a minimum of 5 years.
The researchers were able to gather data about baseline levels of various hormones, including total testosterone, sex hormone-binding globulin, luteinizing hormone, dihydrotestosterone, and estradiol. When the researchers looked for a relationship between these levels and the participant's risk for cardiovascular diseases or deaths from any cause, it was seen that men who had a low total testosterone, which is below 7.4 nmol/L had a greater risk of dying from any cause.
It was also noticed that men with further lower levels of testosterone below 5.3 nmol/L had a higher risk of dying from cardiovascular diseases.
A simple blood test can tell you about your testosterone count. The testosterone level should be drawn mid-morning, that is when they are at their peak for the day.
There are two types of numbers which will be shown in your report. Where 'Free testosterone' means that it is bio-available, that it can be easily put to use in your body, whereas 'Total testosterone' means that it is both free testosterone and that one that is bound to certain proteins in your blood and cannot be used immediately.
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Manipulation, according to the American Psychological Association, is behavior designed to exploit, control or otherwise influence others to one’s advantage. Some people Some people do this with words; others through actions. In a new study, researchers found that there is another act that manipulators often use to their advantage.
We think of a hug or a hand on the arm as comforting and connecting. But a new study suggests that these simple actions can hide a darker intention. Research in the journal Current Psychology reveals that people who are manipulative and self-centered (narcissistic) often use touch to calculate how to influence or control their romantic partners.
Senior researcher Richard Mattson points out that in these relationships, you not only miss out on the good feelings that touch usually brings like lower stress and a boost of the "love hormone" oxytocin, but the touch is actively used to benefit the manipulative person, often hurting their partner in the process. This work connects how someone touches with who they are.
Most studies look at the positive effects of touch, but this research focused on the opposite: when touch is used to harm or trick someone. The study centered on people who showed traits belonging to the "Dark Triad," which is a group of three linked, negative personality traits:
Narcissism: Being extremely self-focused, needing admiration, and lacking empathy for others.
Psychopathy: Having very little empathy (inability to understand others' feelings) and acting impulsively.
Machiavellianism: Being cunning and manipulative to reach personal goals, often deceiving others.
The researchers surveyed over 500 college students about their comfort with touch and how they used it in relationships. They found that people with high levels of these dark traits were significantly more likely to use touch as a tool to control, influence, or manipulate their romantic partner, proving it wasn't about affection but about power.
The study revealed some interesting gender-based difference in how these manipulative traits showed up:
Men with these darker traits tended to use touch in an effort to feel more connected to their partner. This was especially true if they already felt insecure or unstable in the relationship, using touch as a way to reinforce their bond or ease their own anxiety.
Women with "Dark Triad" traits often reported feeling uncomfortable when they were touched by others. However, they were still more likely than others to use touch themselves as a means of controlling or influencing their partner.
Experts summarized the core attitude of these personality types as "me first, you second." This self-serving belief is so strong that it affects even how they handle affection and physical closeness—an important part of any relationship.
People with high "Dark Triad" traits often have romantic relationships that are short-lived, troubled, and complex.
The study's findings offer a path toward solutions. Since touch is a powerful, low-cost tool for providing support and promoting better health, Mattson suggests this information can help create new interventions. The goal is to "leverage touch" to teach people, especially those who avoid touch or use it to manipulate, how to use it in healthy, caring, and mutual ways. Instead of using touch for control or self-protection, they could learn to use it to truly connect and support someone else.

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Many struggles that were once simply called "teenage behavior" are now understood as signs of ADHD. Teens with ADHD often face extra pressure from school and social life, like falling behind or struggling with communication, because their brains are wired differently. This constant stress is very common, according to the Child Mind Institute, and a new study has found an answer to this problem.
Whether it is less structured lives at home or school, stress of falling behind or not doing well with communication that works well for other students, etc. This kind of pressure and stress is very common for ADHD teens.
But a new study found a powerful, non-medication solution to this stress: exercise. The research, published in the Journal of Affective Disorders, shows that just three weeks of regular, planned exercise helped teens with ADHD feel much less stressed. It didn't make them instantly calm; it taught their nervous system a healthy way to quiet down and cope.
A teen with ADHD often struggles with follow-through—what they want to do is often stopped by what their brain allows. In the study, when teens did moderate exercise (getting their heart rate up) for three weeks, their stress levels dropped.
Researchers introduced a three-week program of moderate-to-vigorous activity to adolescents with ADHD. At the program's conclusion, the teens reported a drop in their perceived stress levels.
Normally, constantly being stressed can wear out the body, causing cortisol levels to flatten. This means the body stops knowing how to respond to stress properly. The exercise actually "wakes up" this system so the teens can handle stress better and recover faster.
Simple, repeated movements (like running or dancing) give the nervous system a predictable rhythm. This rhythm tells the body it's safe, helping the teen move away from feeling "fight-or-flight" and toward a calmer state.
Movement increases brain chemicals like dopamine and norepinephrine—the same ones targeted by ADHD medication. This is why teens often feel more focused and clear-headed after sports or other physical activity.
The study saw great results in only three weeks, which is encouraging for parents. You don't need a huge, long-term plan to start seeing changes. Even small, regular movement (20 to 40 minutes, a few times a week) can start regulating your teen’s stress.
To make exercise a part of your teen’s life, forget about making them comply. Instead, focus on consistency and fun. Aim for movement three or four times a week, as long as it raises their heart rate and is enjoyable. The key is to make it fun, not a chore:
ADHD brains love new things and things they are interested in. Let your teen pick the activity, like shooting hoops, martial arts, or rollerblading. If they enjoy it, they’ll stick with it.
Think of movement as a way to change their mood or energy quickly. When your teen seems overwhelmed or too hyper, suggest a short burst of activity, like five minutes of jumping jacks, a quick walk, or just dancing to music.
Teens are more likely to participate when parents join in. This makes movement a time for connection, not a chore or a punishment.
You can try your own three-week challenge at home. Track how your teen's stress, mood, and sleep change. This helps them connect the dots between moving their body and feeling better.
Ultimately, exercise gives your teen a way to feel in control and safe. To help them stress less, start with their feet, not just their head.
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As with every flu season, new strains of the virus that causes COVID-19 are spreading across Europe, the United States, and other parts of the world. The latest one to draw attention is the Stratus variant, also known as the “Frankenstein variant.”
Scientifically labeled XFG, this variant has become increasingly dominant in Germany and several European countries since mid-2025. Both the World Health Organization (WHO) and the European Centre for Disease Prevention and Control (ECDC) have listed XFG as a variant under monitoring (VUM), meaning it is being closely tracked, though it is not yet considered a major threat.
The XFG variant is a recombinant strain, a mix of two earlier sub-lineages, LF.7 and LP.8.1.2. Much like Frankenstein’s creature, which was stitched together from different parts, this variant combines genetic material from multiple virus lines.
Such mutations are a normal part of how viruses evolve over time. The nickname “Frankenstein” first appeared during the spread of Omicron in late 2021, when new combinations of subvariants began to surface. For now, both the WHO and Germany’s Robert Koch Institute (RKI) rate the overall risk from XFG as low.
Most infections caused by the Stratus (XFG) variant appear mild, particularly among those who are vaccinated or have received booster doses. However, according to the U.S. Centers for Disease Control and Prevention (CDC), this variant has one feature that sets it apart, a persistent, dry cough that lingers long after recovery.
Doctors in the UK and India have also noted other possible signs linked to this variant, including a sharp, burning throat pain and hoarseness of voice. These symptoms could explain why some people experience a cough that seems to “never go away.”
Data from the Robert Koch Institute (RKI) and the ECDC show that XFG has become the dominant strain in Germany since mid-2025, accounting for an increasing share of sequenced COVID-19 cases. The variant has also been detected in several other European countries, such as France, Spain, and the Netherlands.
While case numbers across Europe remain relatively high, the ECDC reports that infections are gradually declining in most regions.
During the respiratory illness season, health authorities continue to remind people to stay up to date on recommended vaccines, including those for COVID-19, influenza, and respiratory syncytial virus (RSV).
“These vaccines provide strong protection against severe illness,” the Public Health Agency of Canada (PHAC) stated, urging individuals to consult their healthcare provider or local health authority about their eligibility.
Personal safety measures include:
These simple precautions remain the most effective way to prevent infection and limit the spread of respiratory viruses, including new COVID-19 variants like Frankenstein (XFG).
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