Renowned fertility experts are advising couples who are trying to conceive to avoid eating stock fish and other large fish because they may contain heavy metals that could harm reproductive health.
These experts warn that exposure to heavy metals such as mercury, lead, and arsenic, often found in large fish, can disrupt hormone production, potentially leading to infertility in both men and women.
In an interview with PUNCH Healthwise, Professor Oladapo Ashiru, a consultant reproductive endocrinologist and President of the Academy of Medicine Specialties of Nigeria, emphasized the risks associated with heavy metals in fish. “Large fish, including stock fish, can contain high levels of heavy metals that may impair reproductive health by disrupting hormone production and balance,” he explained. He also noted that these metals could significantly affect both male and female fertility.
Ashiru, who also serves as the Chief Medical Director of the MART Group of Health Services, pointed out that other environmental toxins, such as those found in petrochemicals, cosmetics, and electronic devices, are contributing to declining fertility rates globally. He highlighted the role of endocrine-disrupting chemicals, which can interfere with the hormones necessary for ovulation and sperm production, worsening fertility problems.
In addition to environmental factors, Professor Ashiru discussed lifestyle choices that could negatively impact fertility. He warned against the excessive consumption of sugary foods and drinks, particularly smoothies with high sugar content.
According to him, many people unknowingly consume large amounts of sugar in fruit smoothies, which can contribute to fertility issues. “People think fruits are healthy, but when they blend them into smoothies and drink several glasses daily, they are consuming a lot of sugar,” he said. “One glass of smoothie can contain 10 to 12 cubes of sugar.”
Ashiru also stressed the importance of adopting a healthier lifestyle for those trying to conceive. He recommended a diet rich in lean proteins and fresh vegetables, regular exercise, and detoxification to improve reproductive health. “If you want to conceive a baby, you need to detoxify yourself, change your lifestyle, and start exercising,” he advised.
Professor Preye Fiebai, President of the Association for Fertility and Reproductive Health, echoed Ashiru’s concerns and stressed the importance of making lifestyle and dietary adjustments to improve fertility. Fiebai emphasized that maintaining a healthy weight is crucial for reproductive health. “A well-rounded diet, rich in multivitamins and essential nutrients, is critical for fertility,” he said. He also noted that both overweight and underweight individuals could face fertility problems.
Fiebai highlighted the importance of regular exercise, which helps manage weight, improve circulation, and reduce stress—factors that are beneficial for reproductive health. He also advised young women to be cautious about unprotected sex and consider delaying sexual activity until they are ready for the potential consequences.
The experts also pointed out that infertility is a growing global concern. The World Health Organization (WHO) reported in 2023 that about 17.5% of the adult population worldwide—representing one in six people—experience infertility. The Centers for Disease Control and Prevention (CDC) has also warned that infertility rates are rising globally, defining infertility as the inability to conceive after one year of unprotected sex.
In Nigeria, the problem is particularly pronounced. According to the Nigeria Demographic and Health Survey conducted in 2018, about 25% of married women in the country experience primary infertility, while 16% face secondary infertility. These figures highlight the significant prevalence of infertility issues in Nigeria.
For couples struggling to conceive, the experts recommend seeking medical attention and considering fertility treatments if necessary. Professor Fiebai advised, “If you’re unable to conceive within the recommended period of one year, it’s important to see a specialist who can examine you and take necessary measures to help you achieve fertility.”
The experts also emphasized the importance of education and awareness in addressing infertility. Professor Fiebai stressed that educating young people about healthy lifestyle choices and reproductive health can help reduce the likelihood of fertility problems in the future. “By fostering awareness and providing resources, society can better support individuals in maintaining their reproductive health,” he concluded.
The fertility experts strongly advise couples trying to conceive to avoid stock fish and other large fish, adopt healthier lifestyles, and seek medical guidance when necessary to improve their chances of conception. The growing concern over infertility underscores the need for better awareness and preventive measures to safeguard reproductive health.