Health
WHO cancer research agency to declare sweetener used in Diet Coke a possible carcinogen
The International Agency for Research on Cancer (IARC) is set to declare aspartame, one of the most common artificial sweeteners, a possible carcinogen.
Aspartame is an artificial sweetener that is 200 times sweeter than sugar and widely used in low-calorie products.
The sweetener is used in several drinks including Diet Coke. It is also used in chewing gums.
While aspartame has been used for decades and is approved by food safety bodies, there have been several controversies around the ingredient.
According to Reuters, two sources with knowledge of the process said the IARC, the World Health Organisation’s (WHO) cancer research arm, will publicly list aspartame on July 14 as “possibly carcinogenic (cancer-causing) to humans” for the first time.
The IARC ruling was said to have been finalised earlier in June after a meeting of the agency’s external experts and a review of about 1,300 studies on aspartame and cancer.
However, the ruling does not take into account how much of a product a person can safely consume.
The IARC ruling has four levels of classification — carcinogenic, probably carcinogenic, possibly carcinogenic and not classifiable.
The levels are based on the strength of the evidence.
The joint WHO and Food and Agriculture Organisation’s expert committee on food additives (JECFA), is also reviewing aspartame use this year.
The committee’s meeting began at the end of June and it is due to announce its findings on the same day that the IARC makes its decision public.
An IARC spokesperson said both the IARC and JECFA committees’ findings were confidential until July, but added they were “complementary”.
The spokesperson said the IARC’s conclusion represents “the first fundamental step to understanding carcinogenicity”.
Similar rulings made by the IARC in the past for different substances have raised concerns among consumers about their use, led to lawsuits, and pressured manufacturers to recreate recipes and swap to alternatives.
This has led to criticism that the IARC’s assessments can be confusing to the public.
Health
ICPC warns against unchecked herbal mixtures, calls for strict regulation
The Independent Corrupt Practices and Other Related Offences Commission (ICPC) has called on the Nigerian Natural Medicines Development Agency (NNMDA) to address the proliferation of unregulated herbal medicines in the country.
Kabir Elelu, ICPC resident commissioner for Lagos state, made the call at a one-day training titled, “Building a Transparent and Accountable Public Institution and Inauguration of the Anti-Corruption and Transparency Unit (ACTU) of the NNMDA”.
Elelu expressed concern over the unchecked sale of herbal mixtures by hawkers as the consumption of such substances posed severe health risks.
“One particular area I want you to look at is the area of this natural medicine; how do we harness them and protect public health? You also need to look at how it has been bastardised by hawkers and some of them are killing our people,” he said.
“I want the agency to look into this and come out with a solution because it is a huge problem; it is a problem in all areas of the country with all kinds of concoctions that are killing our people.
“Now, we have high rate of liver cirrhosis and all kinds of diseases that can be associated with the intake of herbal concoctions.”
On his part, Martins Emeje, NNMDA’s director-general, said the agency is commitment to transparency in research and natural medicines development.
Emeje described the inauguration of ACTU members as a significant step toward fostering transparency and fighting corruption.
“With transparency, we are driving the principle of Renewal of Hope to develop natural medicines,” he said.
“Most of our medicines are imported and that is the narrative we are changing; so, within one and a half years, we have proven that Nigeria can do it transparently without stealing.”
Health
Studies reveal causes of secondary infertility
Nancy Umeh, the Nigerian chef and public scientist, recently revealed her seven-year battle with secondary infertility — a journey that ultimately led her to embrace surrogacy for her third child.
Secondary infertility is a condition that affects countless couples worldwide but often goes unspoken. Despite its prevalence, it remains a silent struggle for many.
A study reveals that 52 percent of couples in Africa struggle with secondary infertility. Another research found that the prevalence of secondary infertility is approximately equal to that of primary infertility.
What is secondary infertility?
Secondary infertility is the inability to conceive or carry a baby to term after previously giving birth without any fertility treatments. It affects men and women equally.
What causes secondary infertility?
Several factors can contribute to secondary infertility. These factors include:
- Age
Biologically, fertility is at its peak around age 20. It begins to decline at 30, and the decline speeds up after age 35.
So, age plays a role in secondary infertility. A 2018 study showed that couples experiencing secondary infertility were older than those with primary infertility.
While healthy couples in their 20s and early 30s have a 25 percent chance of getting pregnant in a cycle, that number drops precipitously when the woman is older.
According to the American Society for Reproductive Medicine, a woman’s chance of pregnancy success is less than 5% per cycle at age 40. This is because the quantity and quality of a woman’s eggs decline with age.
- Ovulation disorders
Ovulation disorders are one of the most common causes of secondary infertility. According to studies, 40% of women battling infertility do not consistently ovulate.
The problem of ovulation is caused by several reasons including:
- The most common cause, polycystic ovary syndrome (PCOS)
- Primary ovarian insufficiency (POI)
- Decreased egg production related to aging
- Thyroid or other endocrine disorders that affect hormone production and
- Lifestyle factors, such as weight, nutrition, and alcohol or drug misuse
- Problems with the uterus or blocked fallopian tubes
These cause secondary infertility. If there is a blockage in the fallopian tubes, sperm and egg may not be able to meet. Blockage can be caused by surgery or pelvic infection.
The uterus may also have a structural or tissue defect that prevents implantation. Endometriosis, uterine fibroids uterus scarring (during surgery like C-section), and abnormality in the shape of the uterus are among the conditions that can affect the uterus.
- Infections
Sexually transmitted infections can cause pelvic inflammatory disease.
This can lead to scarring and blockage of the fallopian tubes which ultimately leads to infertility.
- Men factors
Factors like low testosterone levels, testicular varicocele, enlarged prostate and low sperm count and mobility are some causes of secondary infertility in men.
About 30% of infertile men have a testicular varicocele. An enlargement of veins in the scrotum can cause low sperm production.
An enlarged prostate can lower sperm count and make it hard to have a normal ejaculation.
What are the symptoms of secondary infertility?
The major symptom of secondary infertility is the inability to conceive after a year of trying.
However, other symptoms are caused by other factors. They include:
- Irregular menstrual cycles
Absent or inconsistent menstruation may indicate hormonal imbalance or ovulation disorders. Meanwhile, these conditions affect the ability to conceive.
- Painful periods
- Hormonal changes like changes in weight and sexual desire, excessive hair growth, and acne.
How can secondary infertility be treated?
There are various options to improve the chances of conceiving. However, the treatment option will depend on the cause of infertility and sometimes personal preference.
Here are the treatment options available for secondary infertility:
- Medications
There are several medication options. For infection, there are drugs used to treat the infection and also improve fertility.
There are also drugs like clomiphene (Clomid) and letrozole used to stimulate hormones and help women ovulate.
- Surgery
Surgery is most recommended when there is a structural problem in the uterus or fallopian tubes.
A minimally invasive procedure called a hysteroscopy is used to treat endometriosis, clear fallopian tube blockages, or remove scar tissue, polyps, and fibroids from the uterus.
In men, surgery is most commonly used to remove varicoceles. Surgery also can fix blocked or scarred epididymis tubes that store and carry sperm.
- Advanced Reproductive Technology (ART)
The two common procedures are intrauterine insemination (IUI) and IVF.
With IUI, sperm is collected and then inserted into the uterus at the time of ovulation.
In IVF, an egg is removed from the woman’s ovaries and fertilised with sperm in a laboratory. The fertilised egg, called an embryo, is then returned to the woman’s womb to grow and develop.
The procedures have a 24% success rate, according to 2019 CDC data.
To improve the chances of getting pregnant, maintain a healthy lifestyle.
Health
NAFDAC warns against counterfeit cancer drug in circulation
The National Agency for Food and Drug Administration and Control (NAFDAC) has alerted Nigerians, including healthcare providers, about Phesgo, a suspected counterfeit cancer treatment drug.
The alert on the circulation of the drug was published on the agency’s website.
NAFDAC said a doctor at the Lagos University Teaching Hospital (LUTH) had raised concerns about the drug after a patient brought it in.
The agency said the product had not been administered, but it matched the characteristics of a previously reported counterfeit batch, C3809C51.
“The National Agency for Food and Drugs Administration and Control (NAFDAC) wishes to inform healthcare providers and the public of a report of a suspected counterfeit Phesgo® 600mg/600mg/10ml, labelled with batch C5290S20,” the statement reads.
“The Marketing Authorisation Holder (MAH) Roche received a complaint from a doctor at Lagos University Teaching Hospital (LUTH-NSIA) reporting a suspected counterfeit Phesgo® 600mg/600mg, labelled with batch C5290S20.
“The product was reported to have been brought in by a patient for administration. It had not been administered at the time of the report, as it matched the previously reported counterfeit batch: C3809C51.
“Although no sample was returned to Roche for investigation, only pictures displaying parts of a Phesgo® 600mg/600mg in a 10ml folding box and a labelled vial.
“Images of the suspected product were examined by Roche and compared to the genuine samples retained for reference.
“Although no physical sample was returned to Roche for investigation, images of parts of the product specifically, a Phesgo 600mg/600mg vial and a 10ml folding box were examined.
“The suspected product’s images were compared to genuine samples retained by Roche.
“Roche’s investigation identified several significant differences between the complaint sample and genuine materials, confirming the counterfeit status of the batch.
“These included: no batch number in the MAH database, discrepancies in language, missing basilisk, incorrect bollino date, and tampered evidence labels that did not match genuine Roche materials.”
NAFDAC added that “since no physical sample was available for chemical analysis”, the investigation was “limited to visual comparisons”.
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