Administrator and engagement officer jobs

This is a senior, trusted role at the heart of the organisation, responsible for the smooth running of the CEO and Executive Office and for providing high quality governance and administrative support to our Boards and committees. Working closely with the Co Chief Executives, the role supports strategic delivery, organisational planning and cross organisational projects, while also playing an important part in shaping how we work together as a values led organisation.

Based in Covent Garden, the role would suit someone with experience of working within a senior executive or private office environment who brings sound judgement, discretion and a collaborative approach. A background in theatre is not essential, but an appreciation of the social and cultural value of the arts and a commitment to equality, diversity and inclusion are important.

For full details of the role, please see the job pack. 

 Friends of Moorfields

The Friends of Moorfields is a registered charity supporting the patients and staff at Moorfields Eye Hospital, a world centre of excellence for the specialist treatment of eye diseases.

The Friends provide a range of services to support the work of the hospital – including the purchase of clinical equipment – and managing the trust’s volunteer programme.

The Position

The Volunteer Administration Officer is an exciting and challenging role, responsible for assisting the Volunteer Services Manager in the recruitment, administration and support of a network 350+ volunteers throughout the hospital at City Road, and the 31 Moorfields Network Sites.

The post-holder will be an all-rounder; someone who is comfortable working on their own initiative, is well organised, numerate, and who enjoys the challenges of supporting a small and friendly team. They will be supported to grow and develop in this role, through an active approach to training and development, and through a positive and empowering working environment.

Key Accountabilities 

1. To assist with the recruitment, administration and support of a team of 350+ Volunteers at Moorfields City Road.

2. To support the delivery of the ‘Telephone Support Service’.

3. To promote and support volunteer services in Moorfields Network Sites

4. Other General Duties

Interviews planned for 8th / 9th February

 No recruitment agencies please.

We strongly advise that applicants DO NOT use Chatbot AI to generate their covering letter.

The International Prader-Willi Syndrome Organisation (IPWSO) is seeking a talented and motivated CEO who will deliver our organisational strategy which aims to improve the lives of all those affected by a rare genetically determined disorder called Prader-Willi syndrome (PWS). 

The role of CEO at IPWSO is both challenging and rewarding. You can help deliver change for people affected by PWS from across the globe by helping us build solidarity, promoting scientific reasoning and research, helping to foster new relationships, supporting our members, and striving for equality for everyone affected by the syndrome.

You will work alongside passionate volunteers and experts in PWS from across all continents and with a skilled and small staff team based in the UK. We are all dedicated to making a tangible difference!

For the full person specification and the JD, please refer to the attachment below.

#CEO #Chief Executive #Chief Executive Officer 

Role description, January 2026 

Reports to: Senior Consultancy and Training Manager 

Direct reports: None

Location: Unit 7, Finsbury Business Centre Clerkenwell, 40 Bowling Green Lane, London EC1R 0NE,                               hybrid 

Status, hours:    Permanent, full-time – 35 hours p/w 

Salary: Grade D - £32,254 - £35,560 depending on skills, knowledge, and experience. Includes 11% London Weighting which is based on one day a week in the office. 

Role Summary

The Training & Consultancy Officer will work closely with the Senior Consultancy and Training Manager, and Director of Consultancy and Training to deliver significant elements of activity. The post holder will be responsible for the administrative duties in the team which include responding to prospective and current training clients, creating booking forms, invoicing and liaising with our team of associates.

Key Tasks and Responsibilities  

Please refer to the candidate pack for role and responsibilities of this post.

Important note: We monitor for use of AI in responses and will reject applications containing fully AI generated answers.

We encourage applications from people who meet most, but not all, of our essential criteria. And we encourage applications from people who have been disabled by society, are from minoritised groups, have personal experience of alcohol harm or have experienced any other forms of societal discrimination. 

Deadline for us to receive your application: strictly 9am, 11 February 2026. The online application form gives a date and time stamp to all applications.  

We will aim to get back to you by: 13 February 2026.All applicants will receive a response.  

Interviews: Wednesday 18th February (please save the date!)

This is not a typical administrative role. As General Administrator at New Citizens’ Gateway, you will be at the heart of a charity that believes everyone deserves safety, dignity and the opportunity to thrive.

Every day, your work will directly support refugees and people seeking asylum as they rebuild their lives in the UK. From being the first welcoming point of contact at reception, to supporting frontline staff, managing communications and keeping vital systems running smoothly, you will play a key role in ensuring our services are accessible, effective and compassionate.

You’ll be joining a small, dedicated team where collaboration, respect and inclusion are not just values on paper, but how we work in practice. Your organisational skills, attention to detail and ability to juggle priorities will help enable our advisers, youth workers and mental health teams to focus on what matters most — supporting people in need.

In return, we offer:

• Generous 26 days annual leave to support a healthy work–life balance (excluding Bank Holidays)

• 6% employer pension contribution to help you plan for the future

• A friendly, inclusive and supportive team culture

• Meaningful work that makes a genuine difference to refugees and asylum seekers

• Regular supervision and ongoing support in a collaborative environment

• A strong commitment to equality, dignity and respect in the workplace

This role is ideal for someone who wants their work to have real social impact, enjoys variety, and takes pride in being the backbone of a busy, mission-driven organisation.

If you are motivated by purpose, comfortable working with diverse communities, and want to contribute to meaningful change, we would love to hear from you. Interview date 09/02/2026

Location: Barnstaple - Little Bridge House
Job Type: Full time, 30 or 37 hours per week
Contract Type: Permanent
Salary: £25,017 - £27,700 per annum, FTE.
 
The Role
 
As a Fundraising and Product Sales Administrator, you’ll play a vital role in supporting our fundraising team and helping us achieve our targets. Reporting to the Senior Fundraising Administrator, you’ll provide high-quality administrative support, deliver excellent donor care, and assist with the coordination of events and fundraising activities across the region.
 
What You Will Be Doing
 
• Providing prompt and accurate administrative support to the fundraising team
• Setting up and maintaining supporter records on Salesforce and processing event registrations
• Coordinating monthly visit days and supporting the smooth running of events
• Preparing and sending fundraising packs, posters, tickets, and other materials
• Updating CHSW and external websites with supporter events
• Responding to supporter enquiries and delivering excellent donor care
• Assisting with proactive donor engagement, including chasing pledges and converting enquiries
• Ensuring compliance with fundraising legislation and CHSW policies
 
The Successful Candidate
 
We’re looking for someone who is:
 
• Highly organised with strong attention to detail
• Experienced in administration within a busy environment
• Confident using Microsoft Office and databases (Salesforce experience is a bonus)
• A great communicator with excellent customer service skills
• Flexible and proactive, able to adapt to changing priorities
• Passionate about the work of CHSW and committed to our values
• Essential requirements include GCSEs (or equivalent experience), strong IT skills, and the ability to work collaboratively and independently. A willingness to travel and work occasional evenings/weekends is also required.
 
What we offer
 
We value our staff and offer an excellent working environment with an enthusiastic and committed team, benefits include:
 
• 33 days (plus bank holidays) holiday entitlement, which increases with service
• enhanced sick pay scheme rising up to 6 months full and 6 months half pay
• personal pension scheme with 7% employer contribution
• family friendly policies, with enhanced maternity/adoption pay
• occupational health, wellbeing and counselling services and employee assistance programme
• group life insurance scheme
• training and development opportunities
• environmental and green agenda
• a supportive and inclusive environment
• a chance to make a real difference
 
Closing Date: 30/01/2026
Interview Date: 10/02/2026
 
How to Apply
 
Please apply by clicking on the link before the closing date of Friday 30th January.
Please note: We may close this vacancy early if sufficient suitable applications are received; therefore, we recommend you apply early
 
If you have any questions, please visit our website to find out more, or use our email to contact us and speak to one of our HR team today
 
CHSW Equality, Diversity and Inclusion Statement
 
CHSW is committed to safeguarding and promoting the welfare of children and young people and all employees must apply for an enhanced disclosure from the Disclosure and Barring Service. We welcome applications from all sections of the community.
 
Charity Registration Number 1003314
 
You may also have experience in the following: Fundraising Administrator, Fundraising Assistant, Charity Administrator, Donor Care Administrator, Fundraising Support Officer
Charity Fundraising Assistant, Events and Fundraising Administrator, Fundraising Coordinator, Supporter Care Administrator, Charity Events Administrator, Income Generation Administrator, Fundraising Operations Administrator, Charity Sales Administrator, Fundraising and Events Assistant
 
REF-225 955

About us

Waterloo Uncovered is the ground-breaking charity that combines world-class archaeology with veteran wellbeing and recovery.  Through a range of innovative programmes, from excavation on the battlefield of Waterloo to discovery of the objects uncovered in our extensive Finds collection, we support meaningful engagement in heritage.

The role

This is a fantastic opportunity for a proactive indivudal who enjoys working collaboratively as part of a small, dynamic and passionate team, alongside an extensive network of volunteers.  Working across all aspects of our administration, in support of our operational delivery, communications, fundraising and outreach. 

Key responsibilities:

• Programme administration, engaging directly in support of beneficiaries for onboarding, logistics and follow up, answering enquiries and general tasks.

• Customer service, responding to email and telephone enquiries and correspondence.

• CRM and data management, including managing donors, volunteers and a wide range of contacts and suppliers information.

• Virtual office support, arranging meetings and team events, providing secretariat to Trustee Board, office contracts, suppliers and administration.

• Completing research as requested, compiling and summarising information for drafting applications for grants and trusts, managing fundraising pipeline and tracking, reporting schedules and reports.

• Administration of social media accounts, support to drafts of newsletter and impact reports, and other communication initiatives.

• Event administration, including bookings, logistics and support to outreach.

Start date: Immediate

Location: We work remotely with 1-2 days in London per month at your own cost

Salary: £24-25,000

Hours of work: 37.5 hrs per week

How to apply: CV with covering letter outlining your motivations for the role and how you meet the person specification

Closing date: 17.00 on Thursday 5 February

Interviews: Friday 13th February 2026 (tbc)

No agencies please

About Sheldrick Wildlife Trust UK

The Sheldrick Wildlife Trust (SWT) is a pioneering conservation organisation, working across Kenya to protect endangered wildlife and preserve habitats for future generations. Through projects including our world-renowned Orphans’ Project, veterinary interventions, anti-poaching operations, and community outreach, we are dedicated to securing a future for wild species. Sheldrick Wildlife Trust UK plays a vital role in supporting conservation projects, raising funds, cultivating donor relationships, and engaging supporters to sustain and build upon life-saving work in Kenya.

The Role

We are seeking a motivated, detail-oriented Fundraising Support Officer to join our UK team. This is an excellent opportunity for someone passionate about wildlife conservation, eager to learn, and looking to develop a career in fundraising and supporter care.

The Fundraising Support Officer will be central to ensuring our supporters receive the highest standard of care. Working across individual giving, corporate partnerships, trusts and foundations, and retail, the postholder will gain valuable experience in many areas of charity fundraising and supporter engagement.

Key Responsibilities

• Support to the Retail Manager, including acting as first point of contact for order enquiries, exchanges, and returns, and assisting with fulfilling orders from the charity’s online shop.
• Supporter care, to include answering email, post, and telephone correspondence, providing receipts and donor follow-up.
• Accurate recording of donations and correspondence on the charity’s CRM system.
• Support the regular giving and orphan adoption programmes.
• Assist in identifying opportunities with corporate partners and charitable trusts.
• Support the Communications team by drafting and proofreading thank-you letters, donor updates, and impact reports.
• Assist in developing and attending charity events.
• Assist with general fundraising administration and other duties as required by the team.

Person Specification

Essential:

• Demonstrable experience in building relationships with customers or stewarding supporters and donors.
• Excellent written and verbal communication skills, with a polite and professional manner.
• Strong organisational skills and attention to detail.
• Confident using Microsoft Office (Word, Excel, Outlook) and comfortable learning new systems.
• Familiarity with CRM systems and/or handling supporter or customer data.
• Experience in customer service and administration.
• Ability to work both independently and collaboratively in a small team.
• Enthusiastic, proactive, and willing to take on a variety of tasks.
• Ability to manage multiple priorities in fast-paced environment.
• A genuine interest in wildlife conservation and the mission of Sheldrick Wildlife Trust.

Desirable:

• Minimum two years’ experience in donor care or fundraising in the charity sector.
• Experience drafting written communications for a public audience.
• Understanding of the UK charitable sector and fundraising principles.
• Understanding of data protection, including GDPR.

What We Offer

• A supportive and friendly team environment.
• Opportunities for professional development in fundraising and supporter care.
• The chance to play a key role in protecting wildlife and habitats through one of the world’s most respected conservation charities.

If you believe you are well suited to the role, please send us your CV and one-page cover letter by clicking the 'Apply' button on this page. Use your cover letter to tell us about your previous experience and why you want to work for SWT UK. Applications without a cover letter will not be considered.

Early application is encouraged as we will be reviewing applications throughout the advertised period and reserve the right to close the advert at any time. All applicants must have the right to work in the UK. We are not able to support visa or work permit applications for this role. (No agencies, please).

Are you an experienced Public Affairs professional with a passion for dogs?

We’re looking for a Public Affairs Officer to support the important work we do to ensure policy makers consider dog welfare in their decision making.

What does this role do?

As Public Affairs Officer, you’ll:

• contribute to the delivery of our ambitious public affairs programme across Westminster and Whitehall, the devolved administrations and in the EU,
• support and occasionally lead on the organisation and coordination of political events, meetings, and project visits, as part of our programme of engagement with policy makers,
• support the management of the Pet Advertising Advisory Group (PAAG) and the EU Dog & Cat Alliance,
• establish and maintain positive relationships with key external stakeholders, including parliamentarians and civil servants.

Please note, this role is available as a fixed term contract until January 2027. Interviews for this role are provisionally scheduled for week commencing 9th February 2026, and will take place on Teams.

Could this be you?

To be successful in this role, you’ll need experience in parliamentary or public affairs, with a good understanding of the political landscape in the UK. You’ll also need excellent communication skills, with the ability to listen actively, negotiate and influence decision makers and strong written English, to draft clear and concise professional correspondence and communications. Above all, an interest in the aims and values of Dogs Trust is essential.

To apply for this position please click the APPLY NOW button. Our application process requires you submit a personal statement explaining your interest and suitability for the role.
 
Dogs are incredibly diverse, much like the humans that love them! At Dogs Trust we value diversity, and we're committed to fostering an inclusive culture. We actively encourage applications from people of all backgrounds, abilities, and cultures and believe that a diverse workforce helps us to achieve our mission. Our colleague networks give our people a voice, acting as vehicles for real and meaningful change within Dogs Trust. We truly want to see every candidate shine throughout the entire job application process, interview stages, and during their time with us. If there's anything on your mind or any adjustments you may need, don't hesitate to reach out to us. We're here to support you every step of the way.

Please note, Dogs Trust is a wholly independent organisation, free of association with any political party. Our independence is critical, as it allows us to pursue our mission to campaign on dog welfare issues, on behalf of the UK’s dogs and their owners. For our public affairs roles, the ability to display political neutrality in the public eye or when working with MPs is essential.

About the Role

Headway East London is looking for a creative and values-driven Communications Officer to support and develop the voice of Headway East London – working with our community of brain injury survivors, volunteers, and staff to co-produce content that shares our stories, increases awareness and broadens our reach.

You’ll play a central role in promoting our services, supporting income generation, and amplifying the voices of our members through a range of marketing and communications activity. You’ll balance digital know-how with a collaborative approach, developing accessible, engaging content across channels including our website, social media, e- newsletters, and print materials.

If you’re passionate about inclusion and creativity and are interested in working collaboratively to ensure our communications reflect the unique identity, voices, and values of our organisation, then this is your role.

Principal Duties and Responsibilities

Marketing & Communications Delivery

• Deliver and support the implementation of our communications and marketing strategy across all channels (digital and print).
• Support a regular calendar of activity across social media platforms (Instagram, Facebook, LinkedIn, BlueSky, YouTube) to maintain and grow a network of online supporters.
• Support on maintaining and developing content for the Headway East London website (using WordPress and Elementor), including blog posts, service pages and events.
• Create engaging, relevant and accessible content including copy, video, photography, audio and graphics (using Canva), in line with brand guidelines and accessibility principles.
• Co-ordinate monthly e-newsletters and other communications using Mailchimp to a variety of audiences.

Community & Co-Production

• Work with our members(services users - people with brain injury),volunteers and staff to co-create content that reflects their voices and experiences.
• Ensure accessibility is embedded in all communications, including use of plain English, inclusive visuals, and a variety of formats.
• Engage the wider Headway East London community in developing campaigns, storytelling, and communications planning.

Campaigns, Partnerships & Income Generation

• Support fundraising and development teams to plan and deliver digital campaigns that increase donations, engagement and awareness.
• Explore opportunities for brand development, partnerships and earned media that align with our values and strategic priorities.
• Maintain and strengthen relationships with local and national media outlets and stakeholders.

Internal Communications

• Support internal communication needs across the organisation, helping teams stay informed and connected across multiple sites.
• Help develop internal resources and templates that enable teams to produce consistent, values-led communications.

Key Relationships - Internal and External

Internal: Members (service users), Volunteers, Day Service Co-Ordinators,
Service Leads of Departments, Director of Fundraising.

External: Public Audiences, Partner Organisations, Contractors e.g. Website
Developers, Graphic Designers, Press.

Other

Apply the Headway East London values and behaviours to every aspect of the role at all times.

Protect and enhance the interests and reputation of Headway East London internally and externally.

Commit to the organisational principles of: coproduction equity, diversity and inclusion sustainability.

Headway East London is an Equal Opportunities Employer and we are committed to ensuring that all staff are motivated, skilled and rewarded by their work. We welcome applicants regardless of race, religion or belief, colour, national origin, sex, sexual orientation, disability, age and other protected status as required by law. We promote and protect human rights; they are the foundation of what we do. We want to be an inclusive place where a diverse mix of talented people want to come and contribute their unique strengths and perspectives. We are focused on equality and believe that all the fascinating characteristics that make us different, make us more able to deliver our life-changing work with passion and creativity.

The Supporter Connection and Engagement Officer plays a key role in developing and deepening relationships with supporters through personal engagement, particularly via phone and email. This role helps to inspire generosity, communicate impact, and ensure every supporter feels valued and connected to Church Army’s mission. The work that the Supporter Engagement and Connection Officer does directly enables our frontline work to happen.

Brilliant opportunity to join a young and growing charity at an exciting point in its evolution, and to help establish Crystal Palace Park as an exemplar in urban park management, community-led regeneration and cultural and heritage programming whilst restoring its position as one of the UK’s leading visitor attractions. 

We are looking for someone with experience of working in a finance function and who has skills in office management and administration.

Reporting to the Director of Finance and Corporate Services, the role is responsible for bookkeeping, credit control, HR administration and ensuring the smooth running of the office (ranging from ensuring there is milk in the fridge to ordering stationery and managing IT requests). As a key point of contact for callers and visitors an awareness of excellent customer service will also be needed. The role is very varied and will 

Join Médecins Sans Frontières / Doctors Without Borders (MSF) as our Senior Trusts and Foundations Officer, and play a vital role in our fundraising team. This position manages a portfolio of high-value Trust and Foundation (T&Fs) donors with complex and varying requirements. They will work closely with the Trusts and Foundations Lead to drive transformational new business, directly generating essential revenue for MSF’s medical humanitarian operations worldwide. We are looking for exceptional candidates with specialised experience working with T&Fs and high-value donors, and a record of building strong, long-term relationships. The ideal candidate will be a highly organised and results-driven professional, with the ability to work both autonomously, and as part of a fantastic and supportive team.

Hours: 37.5 hours per week, Mon Fri

Duration: Permanent

Location: London - hybrid, 2 days per week in London office (Including Wednesdays)

Salary:£46,784.49 - £57,181.04 per annum

Salary is offered in line with our pay framework and typically starts at the entry point of the band. Salary increases are considered annually and are subject to our appraisal and performance review process.

Job Purpose:

The Senior Trusts and Foundations Officer is an integral part of the Philanthropy team, responsible for supporting with the implementation of the Trusts and Foundations Strategy.

They are responsible for managing a portfolio of key T&F relationships, typically giving at the £50,000 - £250,000 level. In addition, they will drive new business from prospective T&Fs capable of giving between £100,000 - £250,000 and will work closely with the Trusts and Foundations Lead on new business activity above this level

Please download the full job and person specification below for further details.

Knowledge, Skills & Experience:

• Experience of T&F fundraising including, report writing, application and proposal writing, and knowledge of restricted funding models.
• Experience managing a portfolio of high value major donors with a range of requirements.
• Proven track record of developing new business relationships and delivering income from prospective major donors.
• Proven experience of planning and delivering strategic activities.
• Excellent and engaging written communication skills and ability to adapt style to suit a wide range of supporters.
• Confident interpersonal and verbal communication skills, including diplomacy and negotiating and influencing skills.
• Experience of presenting to senior decision makers.
• Proven ability to negotiate, influence and communicate with people at all levels and from a wide range of backgrounds.
• Accuracy and excellent attention to detail.
• Proven organisational skills with experience of managing multiple tasks and deadlines with the ability to prioritise effectively.
• Experience of working in an office environment, maintaining effective administrative systems and procedures.
• Flexible, can-do attitude and good team player – this role involves working very closely and collaboratively with colleagues in the UK and internationally.
• Ability to work independently to general guidelines, with capability to use initiative and seize opportunities.
• Fluency in written and spoken English.
• Interest in international, humanitarian work.
• Commitment to the aims and values of MSF.
• Willingness to travel within the UK and internationally.
• Experience in the practical use of personal IT equipment and Microsoft Office 365 suite. The ability to effectively collaborate and communicate within a hybrid working environment utilising Teams, SharePoint, One Drive and Yammer.

HOW TO APPLY

Please apply on our website by submitting a copy of your CV together with a letter of motivation by the closing date.

Please apply as soon as possible as MSF reserves the right to close the vacancy early, or on the appointment of a candidate.

Incomplete applications will not be considered.

Recruitment timetable:

• Closing Date for applications: Sunday 8 February 2026, 11.59pm (GMT)
• First round interviews: Wednesday 18 February 2026 - Thursday 19 February 2026
• Second round interviews: Monday 23 February 2026 - Wednesday 25 February 2026
• Projected Start Date: Dependent on applicant availability

MSF UK is an equal opportunities employer. We are committed to diversity and creating an inclusive environment for all employees. We encourage applications from all sections of our diverse community. 

Safeguarding

MSF UK/IE is dedicated to safeguarding everyone who comes into contact with the organisation, for whatever reason and however brief. All posts are subject to safer recruitment process which include robust reference requests, scrutiny of employment history and where applicable criminal record and barring checks.

Our safeguarding commitment is underpinned by policies and procedures which encourage and promote safe working practice across the organisation. On joining MSF UK/IE you will be required to attend safeguarding training to ensure responsibility for and maintaining safe working practice and to safeguard our teams, beneficiaries, and communities.

Membership & CRM Officer  

Bristol (Hybrid) 

£32,000

Permanent, Full-time (Part-time may be considered) 

If you are a whizz with Excel and adept at getting the most from complex databases, but also a great communicator and administrator (confident responding to many varied queries, super organised and passionate about process improvement), we’d love to hear from you. 

Are you passionate about combining data expertise with exceptional customer service? Our client is looking for a Membership and CRM Officer who loves data as much as people—combining advanced Excel skills and database expertise with outstanding communication and administrative skills.  

You will independently manage membership subscription processes and grants administration, respond to member queries and ensure the CRM systems run smoothly. This is an exciting opportunity to make a real impact in a mission-driven organisation. 

What You’ll Do 

· Administer membership applications, renewals, and payments 

· Provide excellent support to members and delegates and respond to enquiries 

· Maintain, optimise and troubleshoot multiple CRM systems, ensuring data accuracy and compliance 

· Develop and generate reports and insights to inform decision-making 

· Support grants administration and committee processes 

· Collaborate across teams to improve systems and member engagement

What They’re Looking For 

· Customer service skills and professional written and verbal communication 

· Proficiency with Microsoft suite 

· Advanced Excel skills (Power BI experience is a bonus) 

· Proven experience managing and developing CRM systems and complex databases 

· Strong organisational skills and attention to detail 

· Customer-focused mindset with the ability to build positive relationships 

· Experience in membership/subscription administration or similar is desirable 

Why Join Them? 

· Hybrid working  - Tuesdays and Wednesdays in the North Bristol office (with flexibility where needed) 

· Flexitime system 

· 26 days annual leave minimum, plus bank holidays   

· Health and Wellbeing Cash Plan – private GP, cash back for dentist, opticians, physio and more   

· Salary Extras scheme   

· Refer a friend scheme  

· Employee Assistance Programme   

· Be part of a charity that makes a difference in healthcare 

· Collaborative and supportive team environment 

Our client is a UK charity and membership organisation that brings together scientists, clinicians, and nurses who work with hormones, to improve lives. Hormones matter; they control almost every function in the body, and when things go wrong, they cause some of the most common - and some of the rarest - health conditions.