Tuesday, August 27, 2013
How eating raspberries could increase your chances of becoming a father (?)
This is mostly just theory. The findings probably reflect social class, with middle class men (who are healthier anyway) being more dutiful about their fruit & veg. intake and more likely to take up food fads -- such as berry eating
Eating raspberries could help increase the chances of becoming a father, it has been claimed. They contain high levels of Vitamin C, a key nutrient in male fertility, and magnesium, which is involved in the production of testosterone. They are also thought to protect sperm from ‘oxidative stress’.
A study by the US Department of Energy’s Lawrence Berkeley National Laboratory found that men over 44 with the highest intake of Vitamin C had 20 per cent less damage to their sperm DNA than men who did not eat those foods.
It is also thought that after conception antioxidants may decrease the risk of miscarriage.
Juliet Wilson, a fertility nutritionist, said: ‘Raspberries provide essential nutrients that are known to enhance fertility in men and women.’
A recent study in the USA found that men over 44 with the highest intake of Vitamin C - found in foods such as raspberries, broccoli and potatoes - had 20 per cent less damage to their sperm DNA than men who did not eat those foods.
Juliet Wilson, a leading fertility nutritionist said that one portion of raspberries provided the same amount of Vitamin C as eating 173 grapes.
She said: 'Raspberries have not yet been given the 'super-food' recognition of other berries, but they have a comparable bounty of nutrients which shouldn't be ignored.
'Alongside their many health benefits, raspberries are a perfect snack for couples trying to conceive. 'Together with their high vitamin C content - one portion of raspberries provides the same amount as 173 grapes - they are also a good source of folate, which is known to be essential in key stages of female fertility and early embryo development.
With sperm counts in the average British male falling by almost half in the past 60 years, experts have claimed raspberries maybe the saviour to help fathers-to-be.
The popular fruit contain folate, a key nutrient during conception and throughout pregnancy.
Juliet added that it is not just the vitamins and minerals in raspberries which are beneficial in the bedroom. The berries also help to maintain a healthy body weight, which is the key to balancing sex hormones and increasing the likelihood of conceiving.
They have the lowest GI of any fruit, meaning their sugar is absorbed into the body slowly. This, combined with their high fibre content means raspberries are an effective way to control hunger and cravings at only a few calories.
Nick Marston of British Summer Fruits, the body that represents 85 per cent of British berry growers, said: 'Raspberries are often overlooked, but their numerous fertility-boosting properties and antioxidants make them the perfect bedtime snack.
'This year we've had faultless growing conditions with the cool spring and recent warm weather, which have resulted in exceptionally tasty and juicy raspberries - so there's no excuse not to take advantage of this superfood.'
The Correlation Between Intellect and Pulchritude
David Friedman has discovered general biological fitness -- though he doesn't know it
I have spent much of my life teaching at reasonably good schools. The students who succeed in getting admitted to such schools tend to be well above average, intellectually speaking (in “intellect” I include not only intelligence but also characteristics such as organization and willingness to work that affect academic success).
In my possibly biased observation, the female students at such schools are not only smarter than average, they are better looking as well. That raises an interesting question. Assuming my observation is correct, why would there be a positive correlation between intellect and pulchritude?
One possible answer is that intellect is an input to pulchritude. The abilities that make a woman academically successful might also make her successful in improving her appearance, whether by diet and exercise, choice of clothing, or in a variety of other ways.
Another possibility is that intellect and looks are both affected by some common cause. Poor nutrition, for instance, might affect both. So might genetic factors or environmental ones, pre or post-natal. Something goes right or wrong with the process that builds a human being, and it goes right or wrong with both intellect and whatever determines physical appearance.
Another and perhaps more intriguing possibility is that the correlation is due to selective pressure in past societies. Consider a society where male status is in part dependent on intellectual ability; Imperial China would be one example, since positions in the Imperial civil service were high status and were obtained by success in competitive exams. But the same pattern could be expected in any context where individuals compete for status and success depends in part in intellect.
Further, assume that the society is polygenous—high status males are able to mate with multiple females, whether as wives, concubines, or mistresses. Men prefer attractive women, so men with unusually high intellect will be mating with women with unusually good looks, producing children with both.
Posted by jonjayray at 12:20 AM