BIOL 355Biology of Human Aging
When it runs
- F24
- W25
- S25
- F25
- W26
- S26
- F26
- W27
- S27
Ran in 2 of the last 7 terms. Winter 2027: scheduled, 2 lecture sections. Spring 2027: schedule not out yet.
An overview of current aspects of the biology of human aging and the functional changes associated with both normal aging and pathological problems often present in the elderly. Biological theories of aging and normal age-related structural and physiological changes on all of the major body systems will be discussed. Extrinsic factors such as diet and exercise and their role on the aging process will be examined as well as various medical treatments.
Prerequisites
- Must have completed the following:
- BIOL273 - Principles of Human Physiology 1 (0.50)
Antirequisites
None listed.
Leads to
No course lists it as a requisite.
Winter 2027 sections
| Section | Class | Enrolled | Meets |
|---|---|---|---|
| LEC 001 | 6877 | 0 / 290 | MWF 09:30–10:20 |
| LEC 701 | 2570 | 284 / 9999 | Online or by arrangement |
Reviewed on UW Flow
86% liked it52% easy85% useful
From 57 ratings and 21 comments on UW Flow. The most helpful comments, quoted as written, without names. Read them all on UW Flow.
A really interesting course but Duxbury is a mess teaching it. She is very unorganized, slides are piled full of information in a way that makes it hard to determine what is useful and necessary to learn. She also tends to make mistakes in what she is saying when she reads off the slides so write down everything she says but make sure it matches her slides. The midterm and final are HELL. Study your ass off because they are mainly long answer questions that require paragraphs of information to get a decent mark; luckily, all her questions come directly from the slides so just know everything and you'll be good! Finished with a 90, but studied for the final for at least 2 weeks, rewrote my…
May 2018 · liked it · 2 found this helpfulOn UW FlowRemove this
Took this course in Winter 2022 where half of it was online and the other half in person. The marking scheme was 15% quizzes (best 10 out of 11), 30% midterm and 55% final exam. The final exam was NOT cumulative and based on post midterm material. The midterm and final exam were both primarily written with short and long answer questions. Dr. Duxbury constantly asks for detailed answers and examples. This course covers so much content and many body systems like the cardiovascular, skeletal, vision and skin. It is hard to get over a 90+ in this class, but 80+ is possible. Finished with a hihg 80. Took this course simultaneoulsy with BIOL 373 and there is little overlap. BIOL 373 is easier as…
May 2022 · liked it · 1 found this helpfulOn UW FlowRemove this
It was na easy class and Dr. Dux really does her best to teach it.
For some reason there was a group of girl she always liked to pinpoint and say shut up?? so don't get in her sight honestly if you are a group.
The midterm and final were VERY easy and although I messed up the midterm I clutched on the final. The only unfortunate part is you can't prepare for midterms since there is not a lot of practice or representative previous classes. So here it goes, the way it works is that she gives you questions paper and a solution notebook that you have to write your answer in. Then the questions are given X marks, however, you have to be as complete as possible. So let's say I talk about…Oct 2026 · liked itOn UW FlowRemove this
this course was pretty easy and low effort but SO boring and annoying bcz of cheryl duxbury. content is intuitive and has potential but she makes it repetitive and uninteresting. her slides are a mess and she gives contradicting info. 12% clickers, 58% non cumulative final, 30% midterm. the exams were a lot of writing but if you were paying attention, none of the questions should be surprises so you just have to prepare and have good time management during the exam.
fairly low effort overall for a 300 level bio course but really not as interesting as it sounded when i signed up for it. if its taught by someone other than cheryl duxbury, go for it.Apr 2026 · didn’t like itOn UW FlowRemove this
Taken winter 2026. The course content was very interesting and teaches a lot about the aging process and applying it to both lifestyle factors and physiological processes. There was a 12% iclicker than you needed 80% to get full marks. a 30% midterm and 58% non cumulative final. The exams were very very straightforward like if you knew the topics you would be fine I'd recommend just summarizing the lecture notes at the end of each week making sure you can come of with examples to connect ideas etc and you'll be good. The exams are all fully written answer, the midterm had like 10 mc but the final was fully written which is why if you dont know something its hard to bs an answer.
Apr 2026 · liked itOn UW FlowRemove this
Discussed on r/uwaterloo
95 posts and comments in 69 threads mention BIOL 355, March 2015 to December 2024. Quoted word for word, newest first; each reply sits under the post and the comment that started its branch. Search r/uwaterloo for newer posts.
Fall 2024
How hard is BIOL 359 - Evolution 1: Mechanisms 2 points, 6 comments
u/UoWPanda: “Like in relation to other biology courses I could've taken this term like biology of human aging (BIOL 355) or tropical ecosystems (biol 383).”
u/Exit_exe_: “i wrote a comment about this i think two weeks ago but i think its one of the easier biology course (ive heard biol 355 is hard but i personally havent taken it). lmk if i can clarify anything about the course since im currently taking it right now.”
u/sok_master: “haven’t taken biol355 but know someone who has here’s some details: breakdown: 10% iClicker, 30% Midterm, 60% Final comments from person: - Midterm + Final are fully written - Big picture thinking, so mind maps over flashcards - Very predictable questions, pre-write before exam …”
Spring 2024
Interesting Pure Science Courses 5 points, 2 comments
“I need to do CS breadth/depth requirement and want to know what people think are the most interesting pure science courses. I don't just want to take the easiest courses.”
u/Good-Acanthaceae9645: “imo biol 355 was one of the most interesting courses. the theories of aging stuff in the beginning was boring but the age related diseases duxbury delved into was super interesting. felt like a med school class. …”
Grades for PSYCH 316, 390 and BIOL 355, 302 1 point, 5 comments
u/Cautious_Dinner4474: “anyone got their marks for these courses yet?”
u/guitardesk: “still waiting on biol355”
u/Loud-Meeting-8434: “Biol 355 is out!”
Winter 2024
Tips for BIOL 355 Midterm 3 points, 0 comments
u/Academic_Baby_2050: “Does anyone have tips for taking Duxbury's 355 midterm? It's almost completely written and have heard that she wants a ton of detail so I'm a bit worried. Any advice would be appreciated :)”
biol355 iclicker 5 points, 0 comments
u/guitardesk: “anyone in bio & ageing (biol 355) been able to register their iclicker to the class? she said she enrolled everyone but when i go to my account it doesn't show and i also can't find the class when i search for it so i can't register my iclicker account.”
Fall 2023
Any info on BIOL 361, BIOL 355, BIOL 302 1 point, 4 comments
u/penguins188: “I need to take 2 300-lvel BIOL courses and I am debating between these 3. People have said 302 isn't that bad but I am not sure about the other 2. …”
u/ktptz: “I personally found BIOL 355 really interesting! Duxbury can be a little scary but her lectures are decent, aside from her super messy slides. …”
BIOL 473 or BIOL 355? 1 point, 4 comments
u/Academic_Baby_2050: “As title says. I know Heidi does 473 and I am not a fan of hers. I need an additional course for my minor and am between this and BIOL 355 (biology of human aging) with duxbury. Any advice would be appreciated!”
u/ktptz: “i personally found BIOL 355 really interesting! (I havent taken 473 so I cant help you there) Duxbury can be a little scary but her lectures are decent, aside from her super messy slides. …”
Course selection 2 points, 1 comment
u/dietcoke1L: “… I am considering taking SCI 238, BIOL 355, SMF 213, SMF 215, SMF 211, BME 186. …”
Winter 2023
Syllabus NEEDED!!!! for school application 1 point, 2 comments
u/unicornsndepression: “Hi I need the syllabus or course outline for STAT 202 (winter 2021) or by Owen Woody CLAS 202 (winter 2022) BIOL 278 AND BIOL 378 BIOL 355 BIOL 302 BIOL 301/201 if anyone has it pls send it to me!!!”
3rd/4th year bird courses 3 points, 2 comments
“Looking for third and/or fourth year bird courses that don’t require any prerequisites or like require 1 course.”
u/Fluffy_State_5360: “BIOL 325 BIOL 355 (can be easy if you like the content)”
Fall 2022
BIOL 355 or BIOL 359 4 points, 3 comments
u/No-Cardiologist5653: “Looking to take a third year biology course next term. Was wondering if BIOL 355 - biology of human aging or BIOL 359 - evolution 1 mechanisms was a better fit and if anyone with experience with these classes could let me know! Thanks”
Spring 2022
Is anyone still waiting on some grades? 5 points, 6 comments
“Is anyone else still waiting to get final grades back in quest? When is the last day that profs can submit grades? It’s kinda stupid stressful waiting on that one last grade :/”
u/Immediate-Ad1211: “Still waiting for Biol 355. I think the last day is sometime in mid May.”
Check it elsewhere for Fall 2026
- Undergraduate Calendar, 2026–27The official entry
- Requirements for Fall 2026Waterloo’s requisite checker
- Schedule of Classes, Fall 2026Instructors, rooms, live seats
- Quest Class SearchWhere you enrol
- Course outlinesSyllabi from past terms (UW login)
- UW FlowStudent ratings and reviews
- WClassesPast sections back to 2004, and who taught them