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According to new research, men who are heavy tea drinkers may be more likely to develop prostate cancer.

A team from Glasgow University tracked the health of more than 6,000 male volunteers over a period of 37 years.

They found men who drank over seven cups of tea per day had a 50% higher risk of developing prostate cancer than moderate and non tea drinkers.

The team said it did not know if tea was a risk factor or if drinkers lived to ages where cancer was more common.

Prostate cancer is the most common cancer amongst men in Scotland and diagnosed cases increased by 7.4% between 2000 and 2010.

The Midspan Collaborative study began in Scotland in 1970 and gathered data from 6,016 male volunteers, all aged between 21 and 75.

Volunteers were asked to complete a questionnaire about their usual consumption of tea, coffee, alcohol, smoking habits and general health, and attended a screening examination.

Just under a quarter of the men included in the study were heavy tea drinkers.

Of these, 6.4% developed prostate cancer during a follow-up of up to 37 years.

Researchers found that men who drank more than seven cups of tea per day had a significantly increased risk of prostate cancer compared to those who drank no tea or less than four cups per day.

Men who drank over seven cups of tea per day had a 50 percent higher risk of developing prostate cancer than moderate and non tea drinkers

Men who drank over seven cups of tea per day had a 50 percent higher risk of developing prostate cancer than moderate and non tea drinkers

The study was led by Dr. Kashif Shafique of Glasgow University’s Institute of Health and Wellbeing.

He said: “Most previous research has shown either no relationship with prostate cancer for black tea or some preventive effect of green tea.

“We don’t know whether tea itself is a risk factor or if tea drinkers are generally healthier and live to an older age when prostate cancer is more common anyway.”

“We found that heavy tea drinkers were more likely not to be overweight, be non alcohol-drinkers and have healthy cholesterol levels.

“However, we did adjust for these differences in our analysis and still found that men who drank the most tea were at greater risk of prostate cancer.”

Chris Garner, a member of Edinburgh and Lothian Prostate Cancer Support Group, said the research would not stop him drinking tea.

He has adopted a healthier diet since being diagnosed with prostate cancer 10 years ago and drinks green tea.

Chris Garner said: “As usual you get evidence on one side and you get evidence on the other and you’re left in the middle trying to decide who’s right but I have to say, I don’t think tea is very high on the agenda if you’re looking at diet, lifestyle and so on.

“There are other things which come well above tea.”

Dr. Kate Holmes, head of research at the Prostate Cancer Charity, said: “Whilst it does appear that – of the 6,000 men who took part in this study – those who drank seven or more cups of tea each day had an increased risk of developing prostate cancer, this did not take into consideration family history or any other dietary elements other than tea, coffee and alcohol intake.

“We would therefore not wish any man to be concerned that drinking a moderate amount of tea as part of a healthy diet will put them at an increased risk of developing prostate cancer.”

The findings of the study have been published in the journal Nutrition and Cancer.

 

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Researchers at Boston University have found that two cups of tea a day may help boost a woman’s chances of becoming pregnant.

The study found that women were 27% more likely to become pregnant if they regularly drank tea compared with those who did not.

However, the same research found consuming two cola-style fizzy drinks daily seems to reduce a woman’s prospects of conceiving – and it makes no difference if the cola is a diet or sugary version.

Women who drank these soft drinks at least twice a day reduced their chances of becoming pregnant by 20%.

There was no effect on the chances of pregnancy for women who preferred to drink coffee.

The findings were based on a group of 3,600 women who were actively trying to have a baby.

The study’s author, Professor Elizabeth Hatch, wanted to determine if caffeine intake had any effect on women trying for a baby. While there have been other studies on the subject, their results have not been conclusive.

They have also used methods which are thought to be unreliable, based on interviews with pregnant women who were asked to remember the amounts of tea, coffee and soft drinks they consumed before they conceived.

Instead, Prof. Elizabeth Hatch monitored each of the volunteers for a year.

Danish women were chosen for the research because every Danish citizen is given a civil registration number at birth, allowing health officials to recruit and then screen individuals through the internet.

The women, with an average age of 28, formed the largest group ever studied to evaluate a link between caffeine consumption and pregnancy.

Researchers at Boston University have found that two cups of tea a day may help boost a woman’s chances of becoming pregnant

Researchers at Boston University have found that two cups of tea a day may help boost a woman’s chances of becoming pregnant

Prof. Elizabeth Hatch said: “We found that women who drank tea two or three times a day did have a 27% increased chance of becoming pregnant. We don’t know how they took the tea or if they added milk or lemon, but they had this increased chance of getting pregnant over women who did not drink tea at all.

“It may be linked to caffeine but clearly there may be other factors linked with the women’s lifestyle or there may be beneficial properties in tea itself.

“I think drinking two or three cups of tea a day for anyone wishing to get pregnant will be fine. I would love to say tea is a miracle cure to get pregnant but that is not realistic. There may be other factors. The tea drinkers tended to be older women and there may be something else in their diet or lifestyle that helped.”

Green tea has previously been linked with increasing women’s chances of becoming pregnant.

However, in this study women were asked to record their consumption of green or herbal tea in the same section and no link with increased chance of pregnancy was found.

Further research will seek to identify whether drinking green tea helps women became pregnant.

Follow-up work will establish more about the health and size of the babies born to the tea-drinking mums and if the women endured shorter or longer pregnancies or suffered miscarriages.

 

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