How Sweat Glands and Hormones Affect Body Odour
Have you ever noticed that your body odour changes from day to day? While sweating might seem unpleasant, it’s a natural process that varies in intensity and scent over time. Experts explain how sweat glands and hormones influence body odour.
Different Types of Sweat
According to dermatologist Dr. Deshan Sebaratnam, there are different types of sweat glands.
- Eccrine glands, found all over the body, mainly produce water and salt, making their sweat less likely to develop an odour.
- Apocrine glands, located in areas with hair follicles such as the armpits and groin, release chemicals that bacteria break down, leading to body odour, also known as bromhidrosis.
Sweat composition, the environment, and individual perception can all influence how noticeable body odour is.
Hormones and Body Odour
Dr. Pav Nanayakkara, a gynaecologist, explains that hormones regulate many body functions, including temperature control.
- During the menstrual cycle, oestrogen levels drop after ovulation while progesterone increases, potentially causing more sweat.
- Around menopause, falling oestrogen and rising androgens (such as testosterone and progesterone) can alter sweat composition, making it more attractive to bacteria and increasing odour.
- All sweat-related odour comes from bacterial activity, not the sweat itself.
What’s Normal for Sweat Variation?
Sweating levels vary from person to person. Some people sweat excessively due to hyperhidrosis, which may affect specific areas like the face and head.
A sudden change in sweat odour or quantity could indicate an underlying medical issue. Dr. Sebaratnam advises consulting a doctor if sweating patterns shift unexpectedly.
For women, persistent odour changes could signal hormonal shifts, including menopause, and should be monitored along with other symptoms.
Managing Body Odour
To control body odour, Dr. Nanayakkara suggests:
- Using deodorant and aluminium-based antiperspirants, applied at night for better absorption.
- Maintaining a diet rich in fruits and vegetables, as spicy foods and red meat can worsen odour.
- Regular exercise to help balance hormone levels.
- Washing with gentle cleansers, particularly in sweat-prone areas like the armpits and groin.
- Using benzoyl peroxide-based skincare products to reduce bacteria.
For excessive sweating, medical treatments such as Botox or prescription medications may be an option. However, for most people, sweating is a natural and manageable part of life.
This information is general. For personalized advice, consult a medical professional.
