Saturday, 23 February, 2019

Surprising study finds that marijuana use may not hurt male fertility

Cannabis: Sperm count and testosterone could increase after use | Daily Star Men who have smoked marijuana are more fertile -study
Celia Hoffman | 07 February, 2019, 12:41

While the findings are certainly intriguing, it's important to note, as the researchers do, that the study is not without its limitations, and the results certainly don't mean that marijuana is great for your reproductive health - previous research has linked it to reduced fertility, after all.

The result came as a surprise to Harvard University scientists measuring the sperm counts of more than 600 men from couples attending a fertility clinic.

In the new study, the researchers analyzed details from 662 men who were evaluated for infertility from 2000 to 2017 at the Massachusetts General Hospital Fertility Center.

According to the study, men who smoke weed have higher sperm count than those who do not.

Fifty-five percent of the men said they had smoked marijuana at some point, with 44 percent doing so in the past and 11 percent being current users.

The 365 men who reported having ever smoked pot had "significantly higher sperm concentration" - precisely 63 million sperm per milliliter of semen - compared to the 297 who have never taken a hit, which averaged 45 million/mL.

The findings, published in the journal Human Reproduction, also showed that only 5% of marijuana smokers had sperm concentrations below 15 million/mL, which is the World Health Organization's threshold for "normal" levels, compared with 12% of the non-smokers.

Although researchers found a potential link between marijuana use and sperm counts, they warned that the findings are not definitive and do "not mean using marijuana is going to increase your sperm count", Chavarro told Time.

More news: Japan's Nintendo, Line team up for new Mario mobile game

Dr Jorge Chavarro said the findings were unexpected - and highlight how little is known "about the reproductive health effects of marijuana, and in fact the health effects of marijuana in general".

"Secondly, the study is a great opportunity to spark interest on investigating the health effects of marijuana particularly with the backdrop of increasing legalization of recreational use in the USA coupled with a greater perception that marijuana poses no health risks". About half of the men in the sample had also gotten a blood test, allowing the researchers to look at their levels of hormones such as testosterone.

The study also found that among the men who had ever smoked pot, "those who smoked it more often had testosterone levels an average of eight nanograms per decilitre higher than those who used it less often". They were also all college-educated white men, so the results can't be applied to the wider population.

"Our findings were contrary to what we initially hypothesized".

They suggest that the association may not show any cause-and effect relationship, but rather reflect the influence of the male hormone, testosterone, on both sperm count and risk-taking behavior, such as smoking cannabis.

Scientists found there was no significant difference in sperm concentrations between current and former smokers.

Other experts in the field have questioned how robust the association is. But maybe men with high testosterone are just more likely to do drugs.

If you're a male looking to increase your chances of getting a woman pregnant, you may want to start smoking marijuana.

Recommended

  • Thunder to be among teams interested in Wayne Ellington if released

    Thunder to be among teams interested in Wayne Ellington if released

    The 30-year-old Anderson has only gotten into 15 games this season, averaging 3.7 points and 3.0 rebounds in 18.5 minutes. In an extremely interesting bit of news, it turns out Johnson isn't the only player heading to Phoenix.
    Women's Brains Are Aging Slower Compared To Men's Brains

    Women's Brains Are Aging Slower Compared To Men's Brains

    This can cause problems later in life and scientists hope to one day slow it down with state-of-the-art drugs or brain therapy. The team trained an AI algorithm to guess people's ages based on the amount of oxygen and glucose flowing through their brain.
    Cricket Australia keen on Steve Smith's World Cup participation

    Cricket Australia keen on Steve Smith's World Cup participation

    The World Cup scheduled from May 30 to July 14, with Australia to also take on England in an Ashes series from August. David Warner (R) is leading the Australia T20I team in the absence of Steve Smith .
  • Rockets acquire Shumpert in 3-team trade

    Rockets acquire Shumpert in 3-team trade

    Of course, since the deal isn't finalized, the Rockets could change their mind and seek to deal Knight to another team. In Cleveland's fourth in-season trade, the Cavs have now gathered two first-round and six second-round picks.
    Measles cases reported in several Houston-area communities

    Measles cases reported in several Houston-area communities

    Clark County Public Health has been regularly updating its list of locations where people may have been exposed to measles . Measles vaccinations rose from 200 per day in January 2018 to 600 per day in January 2019.
    Health Minister calls NDP's statements 'outrageous' and 'fear mongering'

    Health Minister calls NDP's statements 'outrageous' and 'fear mongering'

    Frontline care will be managed by 30 to 50 MyCare Groups, formed through a bid system with "Expression of Interest" due in March. Ontario's health minister said Monday the NDP "intentionally created confusion" about the PCs' plans for health care in Ontario.
  • Mobile vows not to raise prices if Sprint merger approved

    Mobile vows not to raise prices if Sprint merger approved

    T-Mobile has officially said that, when its merger with Spring merger is done , its customers will get to pay less and get more. T-Mobile and Sprint have been making the case for their merger, which needs federal approval , for months.
    EA is planning Apex Legends to go mobile, cross-play

    EA is planning Apex Legends to go mobile, cross-play

    As you may expect that will include new legends, new weapons, and new loot to help in the fight. Could it be a Titanfall MOBA game? One of the first on the console's new generation.
    Nissan Bosses 'Want Labour To Work With Theresa May For Brexit Deal'

    Nissan Bosses 'Want Labour To Work With Theresa May For Brexit Deal'

    Last year Nissan cut hundreds of jobs at the Sunderland factory in response to declining demand for diesel models, Reuters said. Business minister Richard Harrington conceded the decision was "a disaster" and that Brexit was partly to blame.
  • College student finds intruder in her closet wearing her clothes

    College student finds intruder in her closet wearing her clothes

    Maddie told the station there had been a previous incident in December when they found two strangers in the living room. In a odd and creepy incident, a 30-year-old man broke into a college girl's closet sitting there, wearing her clothes.
    Jason Holder Suspended For Third Test Against England

    Jason Holder Suspended For Third Test Against England

    Holder was held responsible for his team's slow over rate during the win in the second Test Antigua . West Indies lead the three-Test series 2-0.They won the first Test by 381 runs in Barbados.
    Courtois: Vinicius has no fear - he reminds me of Hazard

    Courtois: Vinicius has no fear - he reminds me of Hazard

    Thibaut Courtois would choose Eden Hazard ahead of Neymar as a blockbusting signing for Real Madrid this year. The Metro adds that Hazard has been linked with a move to the Spanish capital, along with Neymar.

RBI Slashes Repo Rate by 25 Basis Points, Changes Stance to 'Neutral' RBI Slashes Repo Rate by 25 Basis Points, Changes Stance to 'Neutral' "The decision to change the monetary policy stance was unanimous", the RBI said in a release after the meeting. The RBI has thus cut rate for the first time in 17 months since August 2017.

Hazard hopeful over £100m Real Madrid move Hazard hopeful over £100m Real Madrid move It was reported earlier this week that Hazard was ready to tell Chelsea of his desire to complete a summer transfer to Real Madrid .

West Indies cricket boss slams crippling Holder ban West Indies cricket boss slams crippling Holder ban Former England captain Michael Vaughan too was not very impressed with this decision. "The Test didn't go three days". The final Test in St Lucia starts on Saturday, with the Caribbean side looking for a famous series whitewash.

Huge blast heard in Somali capital Mogadishu Huge blast heard in Somali capital Mogadishu A Somali police officer says at least seven people died in a powerful auto bomb explosion in Somalia's capital on Monday. Witnesses at the scene told the press that the explosion was very powerful and then a long column of smoke was raised.

Super Bowl 53: Great vehicle ads from a record-breaking game Super Bowl 53: Great vehicle  ads from a record-breaking game The commercial also featured images of key moments from US history, including WWII, the moon landing and the Oklahoma bombing. Moments earlier, Don Jr. tweeted: 'By far the worst Super Bowl commercials ever.

Carson Wentz reflects on 2018: I wasn't the greatest teammate Carson Wentz reflects on 2018: I wasn't the greatest teammate Carson Wentz was at the center of a shocking report from PhillyVoice that painted the Eagles quarterback as a selfish teammate. That would force Philadelphia to make a number of hard salary cap decisions just to keep a backup quarterback.

Ryan Reynolds & Hugh Jackman Fail At Ending Their Fake Feud The clip starts rolling and opens with Jackman sitting in a library with a bottle of Aviation Gin on the table in front of him. I falt-out live for this on-going playfulness between the Wolverine from down under and Canada's Merc with a Mouth.

Trump inaugural committee ordered to hand over documents to federal investigators Trump inaugural committee ordered to hand over documents to federal investigators The subpoena appears to escalate SDNY's ongoing investigation into crimes committed by Trump's inauguration committee, said CNN . President Obama's 2009 inaugural committee raised a then-record $55 million (Obama's 2013 committee raised $43 million).

Bradley Cooper 'embarrassed' by Oscars snub Bradley Cooper 'embarrassed' by Oscars snub Bradley Cooper made his directorial debut past year , but despite good reviews and a big box office haul, he's a little disappointed.

Oil prices drops below $61.5 Oil prices drops below $61.5 West Texas Intermediate ( WTI ) crude futures were at $54.77 per barrel at 0223 GMT, up 21 cents or 0.4 percent. The impact of OPEC+'s supply curbs has been boosted by US sanctions on Venezuelan state-owned oil firm PDVSA.

Priyanka Chopra Reveals the Sweet Reason She Took Nick Jonas’ Last Name Priyanka Chopra Reveals the Sweet Reason She Took Nick Jonas’ Last Name Many celebrities opt out of taking their husbands' last names, but not Priyanka Chopra . Out of all that, PC's favourite was Prick and that's exactly why she is upset now.

Hugh Jackman's commercial for Ryan Reynolds' gin company is hilariously brutal Hugh Jackman's commercial for Ryan Reynolds' gin company is hilariously brutal Jackman then tells Reynolds he's "not quite ready" to show his ad yet and it still needs editing, but Reynolds says to roll it. Jackman, on the other hand, poured out an entire bottle of his rival's gin and dissed him for the camera.

Benzema, Vinicius lead Real to fourth straight win Benzema, Vinicius lead Real to fourth straight win Real are now only two points behind city rivals Atletico Madrid , who suffered a 1-0 defeat at Real Betis earlier on Sunday. Madrid has won all its league games since starting the year with a draw at Villarreal and a home loss to Real Sociedad.

Emiliano Sala: Nantes demand payment from Cardiff City for £15m transfer Emiliano Sala: Nantes demand payment from Cardiff City for £15m transfer In response the Ligue 1 side sent a legal letter to Cardiff City on Tuesday requesting the money owed to be paid within 10 days. Pilot Dave Ibbotson was also on board as rescuers revealed one body has been spotted inside the aircraft 220ft under water .

Gabbard plans rally after rocky presidential campaign launch Gabbard plans rally after rocky presidential campaign launch The rally for Gabbard , one of Bernie Sanders' key surrogates in Congress in 2016, is being held one day after Sen. Gabbard , 37, is the eighth Democrat to have declared their candidacy so far.