Sex drive decline in some men could be due to a simple nutritional deficiency.
A lack of red meat in the diet may be the reason for loss of libido, according to an expert.
Pork, beef and lamb are rich in zinc – a key mineral for maintaining testosterone levels in the blood.
However, many men are missing out by switching red meat for what they perceive to be healthier alternatives.
Zinc is essential for testosterone, a hormone vital for the development of male sexual characteristics and consequently sex drive.
It is also one of the most important fertility nutrients in men, as it helps to form key parts of the sperm.
Without zinc, sperm will lack the mobility and strength for conception if you are trying for a baby.
Many men are failing to reach the recommended zinc intake of 9.5mg a day, and it is suggested that the popularity of lean white meats, like chicken, could be the reason.
“For males, zinc is a vital nutrient to help maintain normal levels of testosterone in the system,” said Emma Derbyshire, nutritional insight researcher.
“Without it, both sex drive and fertility could be seriously impacted, with a host of other negative repercussions occurring as well.
“Whilst a lack of zinc can cause some serious problems, the solution is very simple.
“Red meat such as pork and lamb are some of the best sources of zinc, and boosting your daily consumption of these meats will allow you to hit your recommended daily zinc intake.”
Red meat has developed a bad name thanks to research suggesting that it is high in saturated fat which could raise cholesterol and lead to heart disease.
Many argue this is more relevant to processed red meats, such as bacon and sausages.
They say that good-quality red meat, such as grass-fed or organic, does have health benefits.
This includes a range of nutrients, such as vitamins B3, B12, B6, iron and selenium, in addition to zinc.
A 100g piece of raw ground beef provides 32 per cent of a person’s recommended zinc intake.